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<span>Name</span> </div> </a> <ul id="toc-Name-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Orbit" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Orbit"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Orbit</span> </div> </a> <ul id="toc-Orbit-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Physical_characteristics" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Physical_characteristics"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Physical characteristics</span> </div> </a> <button aria-controls="toc-Physical_characteristics-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Physical characteristics subsection</span> </button> <ul id="toc-Physical_characteristics-sublist" class="vector-toc-list"> <li id="toc-Size,_mass,_and_internal_structure" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Size,_mass,_and_internal_structure"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>Size, mass, and internal structure</span> </div> </a> <ul id="toc-Size,_mass,_and_internal_structure-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Surface_features" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Surface_features"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.2</span> <span>Surface features</span> </div> </a> <ul id="toc-Surface_features-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Formation" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Formation"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Formation</span> </div> </a> <ul id="toc-Formation-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Atmosphere" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Atmosphere"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Atmosphere</span> </div> </a> <ul id="toc-Atmosphere-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Possible_ring_system" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Possible_ring_system"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Possible ring system</span> </div> </a> <ul id="toc-Possible_ring_system-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Exploration" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Exploration"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Exploration</span> </div> </a> <ul id="toc-Exploration-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Notes</span> </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Rhea (moon)</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 77 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-77" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">77 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Rea_(maan)" title="Rea (maan) – Afrikaans" lang="af" hreflang="af" data-title="Rea (maan)" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B1%D9%8A%D8%A7_(%D9%82%D9%85%D8%B1)" title="ريا (قمر) – Arabic" lang="ar" hreflang="ar" data-title="ريا (قمر)" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Rea_(satelite)" title="Rea (satelite) – Aragonese" lang="an" hreflang="an" data-title="Rea (satelite)" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%B1%D8%A6%D8%A7_(%D8%A7%D9%88%DB%8C%D8%AF%D9%88)" title="رئا (اویدو) – South Azerbaijani" lang="azb" hreflang="azb" data-title="رئا (اویدو)" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Rhea_(o%C4%93-chhe%E2%81%BF)" title="Rhea (oē-chheⁿ) – Minnan" lang="nan" hreflang="nan" data-title="Rhea (oē-chheⁿ)" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A0%D1%8D%D1%8F_(%D1%81%D0%BF%D0%B0%D0%B4%D0%B0%D1%80%D0%BE%D0%B6%D0%BD%D1%96%D0%BA_%D0%A1%D0%B0%D1%82%D1%83%D1%80%D0%BD%D0%B0)" title="Рэя (спадарожнік Сатурна) – Belarusian" lang="be" hreflang="be" data-title="Рэя (спадарожнік Сатурна)" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A0%D0%B5%D1%8F_(%D1%81%D0%BF%D1%8A%D1%82%D0%BD%D0%B8%D0%BA)" title="Рея (спътник) – Bulgarian" lang="bg" hreflang="bg" data-title="Рея (спътник)" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Rea_(sat%C3%A8l%C2%B7lit)" title="Rea (satèl·lit) – Catalan" lang="ca" hreflang="ca" data-title="Rea (satèl·lit)" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Rhea_(m%C4%9Bs%C3%ADc)" title="Rhea (měsíc) – Czech" lang="cs" hreflang="cs" data-title="Rhea (měsíc)" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Rea" title="Rea – Corsican" lang="co" hreflang="co" data-title="Rea" data-language-autonym="Corsu" data-language-local-name="Corsican" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Rhea_(lloeren)" title="Rhea (lloeren) – Welsh" lang="cy" hreflang="cy" data-title="Rhea (lloeren)" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Rhea_(m%C3%A5ne)" title="Rhea (måne) – Danish" lang="da" hreflang="da" data-title="Rhea (måne)" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Rhea_(Mond)" title="Rhea (Mond) – German" lang="de" hreflang="de" data-title="Rhea (Mond)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Rhea_(kuu)" title="Rhea (kuu) – Estonian" lang="et" hreflang="et" data-title="Rhea (kuu)" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A1%CE%AD%CE%B1_(%CE%B4%CE%BF%CF%81%CF%85%CF%86%CF%8C%CF%81%CE%BF%CF%82)" title="Ρέα (δορυφόρος) – Greek" lang="el" hreflang="el" data-title="Ρέα (δορυφόρος)" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Rea_(sat%C3%A9lite)" title="Rea (satélite) – Spanish" lang="es" hreflang="es" data-title="Rea (satélite)" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Reo_(luno)" title="Reo (luno) – Esperanto" lang="eo" hreflang="eo" data-title="Reo (luno)" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Rea_(satelitea)" title="Rea (satelitea) – Basque" lang="eu" hreflang="eu" data-title="Rea (satelitea)" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B1%D8%A6%D8%A7_(%D9%82%D9%85%D8%B1)" title="رئا (قمر) – Persian" lang="fa" hreflang="fa" data-title="رئا (قمر)" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Rh%C3%A9a_(lune)" title="Rhéa (lune) – French" lang="fr" hreflang="fr" data-title="Rhéa (lune)" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Rhea" title="Rhea – Irish" lang="ga" hreflang="ga" data-title="Rhea" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Rea_(l%C3%BAa)" title="Rea (lúa) – Galician" lang="gl" hreflang="gl" data-title="Rea (lúa)" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%A0%88%EC%95%84_(%EC%9C%84%EC%84%B1)" title="레아 (위성) – Korean" lang="ko" hreflang="ko" data-title="레아 (위성)" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8C%D5%A5%D5%A1_(%D5%A1%D6%80%D5%A2%D5%A1%D5%B6%D5%B5%D5%A1%D5%AF)" title="Ռեա (արբանյակ) – Armenian" lang="hy" hreflang="hy" data-title="Ռեա (արբանյակ)" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B0%E0%A4%BF%E0%A4%AF%E0%A4%BE_(%E0%A4%89%E0%A4%AA%E0%A4%97%E0%A5%8D%E0%A4%B0%E0%A4%B9)" title="रिया (उपग्रह) – Hindi" lang="hi" hreflang="hi" data-title="रिया (उपग्रह)" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Reja_(mjesec)" title="Reja (mjesec) – Croatian" lang="hr" hreflang="hr" data-title="Reja (mjesec)" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Rhea_(satelit)" title="Rhea (satelit) – Indonesian" lang="id" hreflang="id" data-title="Rhea (satelit)" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Rea_(tungl)" title="Rea (tungl) – Icelandic" lang="is" hreflang="is" data-title="Rea (tungl)" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Rea_(astronomia)" title="Rea (astronomia) – Italian" lang="it" hreflang="it" data-title="Rea (astronomia)" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A8%D7%99%D7%90%D7%94_(%D7%99%D7%A8%D7%97)" title="ריאה (ירח) – Hebrew" lang="he" hreflang="he" data-title="ריאה (ירח)" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%A0%E1%83%94%E1%83%90_(%E1%83%97%E1%83%90%E1%83%9C%E1%83%90%E1%83%9B%E1%83%92%E1%83%96%E1%83%90%E1%83%95%E1%83%A0%E1%83%98)" title="რეა (თანამგზავრი) – Georgian" lang="ka" hreflang="ka" data-title="რეა (თანამგზავრი)" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A0%D0%B5%D1%8F_(%D1%81%D0%B5%D1%80%D1%96%D0%BA)" title="Рея (серік) – Kazakh" lang="kk" hreflang="kk" data-title="Рея (серік)" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/%D0%A0%D0%B5%D1%8F" title="Рея – Komi" lang="kv" hreflang="kv" data-title="Рея" data-language-autonym="Коми" data-language-local-name="Komi" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%A0%D0%B5%D1%8F" title="Рея – Kyrgyz" lang="ky" hreflang="ky" data-title="Рея" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Rhea_(satelles)" title="Rhea (satelles) – Latin" lang="la" hreflang="la" data-title="Rhea (satelles)" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Reja_(pavadonis)" title="Reja (pavadonis) – Latvian" lang="lv" hreflang="lv" data-title="Reja (pavadonis)" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Rhea_(Mound)" title="Rhea (Mound) – Luxembourgish" lang="lb" hreflang="lb" data-title="Rhea (Mound)" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/R%C4%97ja_(palydovas)" title="Rėja (palydovas) – Lithuanian" lang="lt" hreflang="lt" data-title="Rėja (palydovas)" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Rhea_(hold)" title="Rhea (hold) – Hungarian" lang="hu" hreflang="hu" data-title="Rhea (hold)" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A0%D0%B5%D1%98%D0%B0_(%D0%BC%D0%B5%D1%81%D0%B5%D1%87%D0%B8%D0%BD%D0%B0)" title="Реја (месечина) – Macedonian" lang="mk" hreflang="mk" data-title="Реја (месечина)" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B1%E0%B4%BF%E0%B4%AF_(%E0%B4%AE%E0%B5%82%E0%B5%BA)" title="റിയ (മൂൺ) – Malayalam" lang="ml" hreflang="ml" data-title="റിയ (മൂൺ)" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Rhea_(bulan)" title="Rhea (bulan) – Malay" lang="ms" hreflang="ms" data-title="Rhea (bulan)" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Rhea_(%C3%B4i-s%C4%ADng)" title="Rhea (ôi-sĭng) – Mindong" lang="cdo" hreflang="cdo" data-title="Rhea (ôi-sĭng)" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-mwl mw-list-item"><a href="https://mwl.wikipedia.org/wiki/Reia_(sat%C3%A9lite)" title="Reia (satélite) – Mirandese" lang="mwl" hreflang="mwl" data-title="Reia (satélite)" data-language-autonym="Mirandés" data-language-local-name="Mirandese" class="interlanguage-link-target"><span>Mirandés</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%9B%E1%80%AE%E1%80%B8%E1%80%9A%E1%80%AC_(%E1%80%82%E1%80%BC%E1%80%AD%E1%80%AF%E1%80%9F%E1%80%BA%E1%80%9B%E1%80%B6%E1%80%9C)" title="ရီးယာ (ဂြိုဟ်ရံလ) – Burmese" lang="my" hreflang="my" data-title="ရီးယာ (ဂြိုဟ်ရံလ)" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Rhea_(maan)" title="Rhea (maan) – Dutch" lang="nl" hreflang="nl" data-title="Rhea (maan)" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%AC%E3%82%A2_(%E8%A1%9B%E6%98%9F)" title="レア (衛星) – Japanese" lang="ja" hreflang="ja" data-title="レア (衛星)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Rhea_(m%C3%A5ne)" title="Rhea (måne) – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Rhea (måne)" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Saturnm%C3%A5nen_Rhea" title="Saturnmånen Rhea – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Saturnmånen Rhea" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%B0%E0%AC%BF%E0%AC%86_(%E0%AC%89%E0%AC%AA%E0%AC%97%E0%AD%8D%E0%AC%B0%E0%AC%B9)" title="ରିଆ (ଉପଗ୍ରହ) – Odia" lang="or" hreflang="or" data-title="ରିଆ (ଉପଗ୍ରହ)" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="Odia" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Reya" title="Reya – Uzbek" lang="uz" hreflang="uz" data-title="Reya" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%B1%DB%8C%D8%A7_(%DA%86%D9%86%D8%AF)" title="ریا (چند) – Western Punjabi" lang="pnb" hreflang="pnb" data-title="ریا (چند)" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Rea_(ksi%C4%99%C5%BCyc)" title="Rea (księżyc) – Polish" lang="pl" hreflang="pl" data-title="Rea (księżyc)" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Reia_(sat%C3%A9lite)" title="Reia (satélite) – Portuguese" lang="pt" hreflang="pt" data-title="Reia (satélite)" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Rhea_(satelit)" title="Rhea (satelit) – Romanian" lang="ro" hreflang="ro" data-title="Rhea (satelit)" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A0%D0%B5%D1%8F_(%D1%81%D0%BF%D1%83%D1%82%D0%BD%D0%B8%D0%BA)" title="Рея (спутник) – Russian" lang="ru" hreflang="ru" data-title="Рея (спутник)" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Rhea_(muin)" title="Rhea (muin) – Scots" lang="sco" hreflang="sco" data-title="Rhea (muin)" data-language-autonym="Scots" data-language-local-name="Scots" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Rea" title="Rea – Sicilian" lang="scn" hreflang="scn" data-title="Rea" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Rhea_(moon)" title="Rhea (moon) – Simple English" lang="en-simple" hreflang="en-simple" data-title="Rhea (moon)" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%B1%D9%8A%D8%A7" title="ريا – Sindhi" lang="sd" hreflang="sd" data-title="ريا" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Rea_(mesiac)" title="Rea (mesiac) – Slovak" lang="sk" hreflang="sk" data-title="Rea (mesiac)" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Rea_(luna)" title="Rea (luna) – Slovenian" lang="sl" hreflang="sl" data-title="Rea (luna)" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%95%DB%8C%D8%A7_(%D9%85%D8%A7%D9%86%DA%AF)" title="ڕیا (مانگ) – Central Kurdish" lang="ckb" hreflang="ckb" data-title="ڕیا (مانگ)" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A0%D0%B5%D1%98%D0%B0_(%D0%BC%D0%B5%D1%81%D0%B5%D1%86)" title="Реја (месец) – Serbian" lang="sr" hreflang="sr" data-title="Реја (месец)" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Reja_(mjesec)" title="Reja (mjesec) – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Reja (mjesec)" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Rhea_(kuu)" title="Rhea (kuu) – Finnish" lang="fi" hreflang="fi" data-title="Rhea (kuu)" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Rhea_(m%C3%A5ne)" title="Rhea (måne) – Swedish" lang="sv" hreflang="sv" data-title="Rhea (måne)" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A3%E0%B8%B5%E0%B8%AD%E0%B8%B2_(%E0%B8%94%E0%B8%B2%E0%B8%A7%E0%B8%9A%E0%B8%A3%E0%B8%B4%E0%B8%A7%E0%B8%B2%E0%B8%A3)" title="รีอา (ดาวบริวาร) – Thai" lang="th" hreflang="th" data-title="รีอา (ดาวบริวาร)" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Rhea_(uydu)" title="Rhea (uydu) – Turkish" lang="tr" hreflang="tr" data-title="Rhea (uydu)" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A0%D0%B5%D1%8F_(%D1%81%D1%83%D0%BF%D1%83%D1%82%D0%BD%D0%B8%D0%BA)" title="Рея (супутник) – Ukrainian" lang="uk" hreflang="uk" data-title="Рея (супутник)" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%B1%DB%8C%D8%A7_(%DA%86%D8%A7%D9%86%D8%AF)" title="ریا (چاند) – Urdu" lang="ur" hreflang="ur" data-title="ریا (چاند)" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Rhea_(v%E1%BB%87_tinh)" title="Rhea (vệ tinh) – Vietnamese" lang="vi" hreflang="vi" data-title="Rhea (vệ tinh)" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E5%9C%9F%E8%A1%9B%E4%BA%94" title="土衛五 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="土衛五" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Rhea_(bulan)" title="Rhea (bulan) – Waray" lang="war" hreflang="war" data-title="Rhea (bulan)" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%9C%9F%E5%8D%AB%E4%BA%94" title="土卫五 – Wu" lang="wuu" hreflang="wuu" data-title="土卫五" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%9C%9F%E8%A1%9E%E4%BA%94" title="土衞五 – Cantonese" lang="yue" hreflang="yue" data-title="土衞五" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%9C%9F%E5%8D%AB%E4%BA%94" title="土卫五 – Chinese" lang="zh" hreflang="zh" data-title="土卫五" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q15050#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div 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srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Sound-icon.svg/30px-Sound-icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/47/Sound-icon.svg/40px-Sound-icon.svg.png 2x" data-file-width="128" data-file-height="96" /></a></span></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Moon of Saturn</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with the asteroid named <a href="/wiki/577_Rhea" title="577 Rhea">577 Rhea</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><caption class="infobox-title fn org">Rhea</caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:PIA07763_Rhea_full_globe5.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ab/PIA07763_Rhea_full_globe5.jpg/290px-PIA07763_Rhea_full_globe5.jpg" decoding="async" width="290" height="290" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ab/PIA07763_Rhea_full_globe5.jpg/435px-PIA07763_Rhea_full_globe5.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ab/PIA07763_Rhea_full_globe5.jpg/580px-PIA07763_Rhea_full_globe5.jpg 2x" data-file-width="4920" data-file-height="4920" /></a></span><div class="infobox-caption">Mosaic of Rhea, assembled from <i><a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens">Cassini</a></i> imagery taken on 26 November 2005</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#E0CCFF">Discovery</th></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/List_of_minor_planet_discoverers" title="List of minor planet discoverers">Discovered by</a></th><td class="infobox-data"><a href="/wiki/Giovanni_Domenico_Cassini" title="Giovanni Domenico Cassini">G. D. Cassini</a><sup id="cite_ref-space.com.Rhea_1-0" class="reference"><a href="#cite_note-space.com.Rhea-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Discovery date</th><td class="infobox-data">December 23, 1672<sup id="cite_ref-space.com.Rhea_1-1" class="reference"><a href="#cite_note-space.com.Rhea-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#E0CCFF">Designations</th></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Designation</div></th><td class="infobox-data">Saturn V</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Pronunciation</th><td class="infobox-data"><span class="rt-commentedText nowrap"><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˈ/: primary stress follows">ˈ</span><span title="'r' in 'rye'">r</span><span title="/iː/: 'ee' in 'fleece'">iː</span><span title="/./: syllable break">.</span><span title="/ə/: 'a' in 'about'">ə</span></span>/</a></span></span><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Named after</div></th><td class="infobox-data"><a href="/wiki/Rhea_(mythology)" title="Rhea (mythology)">Ῥέᾱ</a> <i>Rheā</i></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/List_of_adjectivals_and_demonyms_of_astronomical_bodies" title="List of adjectivals and demonyms of astronomical bodies">Adjectives</a></th><td class="infobox-data">Rhean <span class="rt-commentedText nowrap"><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˈ/: primary stress follows">ˈ</span><span title="'r' in 'rye'">r</span><span title="/iː/: 'ee' in 'fleece'">iː</span><span title="/./: syllable break">.</span><span title="/ən/: 'on' in 'button'">ən</span></span>/</a></span></span><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#E0CCFF"><a href="/wiki/Osculating_orbit" title="Osculating orbit">Orbital characteristics</a> <sup id="cite_ref-NSES_4-0" class="reference"><a href="#cite_note-NSES-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></th></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Semi-major_and_semi-minor_axes" title="Semi-major and semi-minor axes">Semi-major axis</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7008527040000000000♠"></span>527<span style="margin-left:.25em;">040</span> km</span><sup id="cite_ref-NSSDC_5-0" class="reference"><a href="#cite_note-NSSDC-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Orbital_eccentricity" title="Orbital eccentricity">Eccentricity</a></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="6997100000000000000♠"></span>0.001</span><sup id="cite_ref-NSSDC_5-1" class="reference"><a href="#cite_note-NSSDC-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Orbital_period" title="Orbital period">Orbital period (sidereal)</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7000451821200000000♠"></span>4.518<span style="margin-left:.25em;">212</span> <a href="/wiki/Day" title="Day">d</a></span></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Average <a href="/wiki/Orbital_speed" title="Orbital speed">orbital speed</a></div></th><td class="infobox-data">8.48 km/s<sup id="cite_ref-calculated_6-0" class="reference"><a href="#cite_note-calculated-6"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Orbital_inclination" title="Orbital inclination">Inclination</a></th><td class="infobox-data">0.35°<sup id="cite_ref-NSSDC_5-2" class="reference"><a href="#cite_note-NSSDC-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Natural_satellite" title="Natural satellite">Satellite of</a></th><td class="infobox-data"><a href="/wiki/Saturn" title="Saturn">Saturn</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#E0CCFF"><span class="anchor" id="Infobox_Physical_characteristics"></span>Physical characteristics</th></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Mean_radius_(astronomy)" title="Mean radius (astronomy)">Dimensions</a></th><td class="infobox-data">1532.4 × 1525.6 × 1524.4 km <sup id="cite_ref-Roatsch_et_al._2009_7-0" class="reference"><a href="#cite_note-Roatsch_et_al._2009-7"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Mean_radius_(astronomy)" title="Mean radius (astronomy)">Mean radius</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7005763500000000000♠"></span>763.5<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.5 km</span><sup id="cite_ref-Jacobson2022_8-0" class="reference"><a href="#cite_note-Jacobson2022-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Spheroid#Surface_area" title="Spheroid">Surface area</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7006732534200000000♠"></span>7<span style="margin-left:.25em;">325</span><span style="margin-left:.25em;">342</span> km<sup>2</sup></span><sup id="cite_ref-surface_area_9-0" class="reference"><a href="#cite_note-surface_area-9"><span class="cite-bracket">[</span>b<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Mass" title="Mass">Mass</a></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7021230648540000000♠"></span>(2.306<span style="margin-left:.25em;">4854</span><span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.000<span style="margin-left:.25em;">0522</span>)<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>21</sup> kg</span><sup id="cite_ref-Jacobson2022_8-1" class="reference"><a href="#cite_note-Jacobson2022-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> (~3.9<span style="margin:0 .15em 0 .25em">×</span>10<sup><span class="nowrap"><span data-sort-value="2999600000000000000♠"></span>−4</span></sup> Earths)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Mean <a href="/wiki/Density" title="Density">density</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7000123720000000000♠"></span>1.2372<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.0029 g/cm<sup>3</sup></span><sup id="cite_ref-Jacobson2022_8-2" class="reference"><a href="#cite_note-Jacobson2022-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Surface_gravity" title="Surface gravity">Surface gravity</a></div></th><td class="infobox-data">0.26 <a href="/wiki/Acceleration" title="Acceleration">m/s<sup>2</sup></a><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>c<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Moment_of_inertia_factor" title="Moment of inertia factor">Moment of inertia factor</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="6999391100000000000♠"></span>0.3911<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.0045</span><sup id="cite_ref-Anderson2007_11-0" class="reference"><a href="#cite_note-Anderson2007-11"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> (disputed/unclear<sup id="cite_ref-Anderson2008_12-0" class="reference"><a href="#cite_note-Anderson2008-12"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Escape_velocity" title="Escape velocity">Escape velocity</a></div></th><td class="infobox-data">0.635 km/s</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Synodic_rotation_period" class="mw-redirect" title="Synodic rotation period">Synodic rotation period</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7005390373516800000♠"></span>4.518<span style="margin-left:.25em;">212</span> d</span> <br /> (<a href="/wiki/Synchronous_rotation" class="mw-redirect" title="Synchronous rotation">synchronous</a>)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Axial_tilt" title="Axial tilt">Axial tilt</a></div></th><td class="infobox-data">zero</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Albedo" title="Albedo">Albedo</a></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="6999949000000000000♠"></span>0.949<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.003</span> (<a href="/wiki/Geometric_albedo" title="Geometric albedo">geometric</a>) <sup id="cite_ref-Verbiscer_et_al._2007_13-0" class="reference"><a href="#cite_note-Verbiscer_et_al._2007-13"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></td></tr><tr><td colspan="2" class="infobox-full-data"><table style="border-spacing: 0px; width:100%; border:none; margin:0; line-height:1.2em; white-space:nowrap"><tbody><tr> <th style="width:33%; padding-right:0.25em; text-align:left">Surface <a href="/wiki/Temperature" title="Temperature">temp.</a></th> <th style="padding-right:0.25em; text-align:center">min</th> <th style="padding-right:0.25em; text-align:center">mean</th> <th style="padding-right:0.25em; text-align:center">max</th> </tr><tr> <th style="padding-left:1.0em"><a href="/wiki/Kelvin" title="Kelvin">Kelvin</a></th> <td style="text-align:center">53 <a href="/wiki/Kelvin" title="Kelvin">K</a></td> <td style="text-align:center"> </td> <td style="text-align:center">99 K</td> </tr> </tbody></table></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Apparent_magnitude" title="Apparent magnitude">Apparent magnitude</a></div></th><td class="infobox-data">10 <sup id="cite_ref-Observatorio_ARVAL_14-0" class="reference"><a href="#cite_note-Observatorio_ARVAL-14"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></td></tr><tr><td colspan="2" class="infobox-below"><style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> </div></td></tr></tbody></table> <p><b>Rhea</b> (<span class="rt-commentedText nowrap"><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˈ/: primary stress follows">ˈ</span><span title="'r' in 'rye'">r</span><span title="/iː/: 'ee' in 'fleece'">iː</span><span title="/./: syllable break">.</span><span title="/ə/: 'a' in 'about'">ə</span></span>/</a></span></span>) is the second-largest <a href="/wiki/Natural_satellite" title="Natural satellite">moon</a> of <a href="/wiki/Saturn" title="Saturn">Saturn</a> and the <a href="/wiki/List_of_natural_satellites_by_diameter" class="mw-redirect" title="List of natural satellites by diameter">ninth-largest moon</a> in the <a href="/wiki/Solar_System" title="Solar System">Solar System</a>, with a surface area that is comparable to the area of <a href="/wiki/Australia" title="Australia">Australia</a>. It is the smallest body in the <a href="/wiki/Solar_System" title="Solar System">Solar System</a> for which precise measurements have confirmed a shape consistent with <a href="/wiki/Hydrostatic_equilibrium" title="Hydrostatic equilibrium">hydrostatic equilibrium</a>. Rhea has a nearly circular orbit around Saturn, but it is also <a href="/wiki/Tidal_locking" title="Tidal locking">tidally locked</a>, like Saturn's other major moons; that is, it <a href="/wiki/Rotation" title="Rotation">rotates</a> with the same period it revolves (<a href="/wiki/Orbit" title="Orbit">orbits</a>), so one hemisphere always faces towards the planet. </p><p>The moon itself has a fairly low density, composed of roughly three-quarters ice and only one-quarter rock. The surface of Rhea is heavily cratered, with distinct leading and trailing hemispheres. Like the moon <a href="/wiki/Dione_(moon)" title="Dione (moon)">Dione</a>, it has high-<a href="/wiki/Albedo" title="Albedo">albedo</a> ice cliffs that appear as bright wispy streaks visible from space. The surface temperature varies between −174 °C and −220 °C. </p><p>Rhea was discovered in 1672 by <a href="/wiki/Giovanni_Domenico_Cassini" title="Giovanni Domenico Cassini">Giovanni Domenico Cassini</a>. Since then, it has been visited by both <a href="/wiki/Voyager_program" title="Voyager program">Voyager probes</a> and was the subject of close targeted <a href="/wiki/Flyby_(spaceflight)" title="Flyby (spaceflight)">flybys</a> by the <a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens"><i>Cassini</i></a> orbiter in 2005, 2007, 2010, 2011, and once more in 2013. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Discovery">Discovery</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=1" title="Edit section: Discovery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Rhea was discovered by <a href="/wiki/Giovanni_Domenico_Cassini" title="Giovanni Domenico Cassini">Giovanni Domenico Cassini</a> on 23 December 1672, with a 10.4-metre (34 ft) telescope made by <a href="/wiki/Giuseppe_Campani" title="Giuseppe Campani">Giuseppe Campani</a>.<sup id="cite_ref-space.com.Rhea_1-2" class="reference"><a href="#cite_note-space.com.Rhea-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Cassini named the four moons he discovered (Tethys, Dione, Rhea, and <a href="/wiki/Iapetus_(moon)" title="Iapetus (moon)">Iapetus</a>) <i><a href="/wiki/Sidera_Lodoicea" title="Sidera Lodoicea">Sidera Lodoicea</a></i> (the stars of Louis) to honor King <a href="/wiki/Louis_XIV_of_France" class="mw-redirect" title="Louis XIV of France">Louis XIV</a>.<sup id="cite_ref-space.com.Rhea_1-3" class="reference"><a href="#cite_note-space.com.Rhea-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Rhea was the second <a href="/wiki/Moons_of_Saturn" title="Moons of Saturn">moon of Saturn</a> that Cassini discovered, and the third moon discovered around Saturn overall.<sup id="cite_ref-space.com.Rhea_1-4" class="reference"><a href="#cite_note-space.com.Rhea-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Name">Name</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=2" title="Edit section: Name"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Rhea is named after the <a href="/wiki/Titan_(mythology)" class="mw-redirect" title="Titan (mythology)">Titan</a> <a href="/wiki/Rhea_(mythology)" title="Rhea (mythology)">Rhea</a> of <a href="/wiki/Greek_mythology" title="Greek mythology">Greek mythology</a>, the "mother of the gods" and wife of <a href="/wiki/Cronus" title="Cronus">Kronos</a>, the <a href="/wiki/Interpretatio_graeca" title="Interpretatio graeca">Greek counterpart</a> of the god <a href="/wiki/Saturn_(mythology)" title="Saturn (mythology)">Saturn</a>. It is also designated <b>Saturn V</b> (being the fifth major moon going outward from the planet, after <a href="/wiki/Mimas_(moon)" class="mw-redirect" title="Mimas (moon)">Mimas</a>, <a href="/wiki/Enceladus_(moon)" class="mw-redirect" title="Enceladus (moon)">Enceladus</a>, <a href="/wiki/Tethys_(moon)" title="Tethys (moon)">Tethys</a>, and <a href="/wiki/Dione_(moon)" title="Dione (moon)">Dione</a>).<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:0_17-0" class="reference"><a href="#cite_note-:0-17"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p><p>Astronomers fell into the habit of referring to them and <a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a> as <i>Saturn I</i> through <i>Saturn V</i>.<sup id="cite_ref-space.com.Rhea_1-5" class="reference"><a href="#cite_note-space.com.Rhea-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Once Mimas and Enceladus were discovered, in 1789, the numbering scheme was extended to <i>Saturn VII</i>, and then to <i>Saturn VIII</i> with the discovery of <a href="/wiki/Hyperion_(moon)" title="Hyperion (moon)">Hyperion</a> in 1848.<sup id="cite_ref-:0_17-1" class="reference"><a href="#cite_note-:0-17"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p><p>Rhea was not named until 1847, when <a href="/wiki/John_Herschel" title="John Herschel">John Herschel</a> (son of <a href="/wiki/William_Herschel" title="William Herschel">William Herschel</a>, discoverer of the planet <a href="/wiki/Uranus" title="Uranus">Uranus</a> and two other moons of Saturn, <a href="/wiki/Mimas_(moon)" class="mw-redirect" title="Mimas (moon)">Mimas</a> and <a href="/wiki/Enceladus" title="Enceladus">Enceladus</a>) suggested in <i>Results of Astronomical Observations made at the Cape of Good Hope</i> that the names of the Titans, sisters and brothers of Kronos (Saturn, in Roman mythology), be used.<sup id="cite_ref-Lassell1848_18-0" class="reference"><a href="#cite_note-Lassell1848-18"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-space.com.Rhea_1-6" class="reference"><a href="#cite_note-space.com.Rhea-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Orbit">Orbit</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=3" title="Edit section: Orbit"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The orbit of Rhea has very low <a href="/wiki/Orbital_eccentricity" title="Orbital eccentricity">eccentricity</a> (0.001), meaning it is nearly circular. It has a low <a href="/wiki/Orbital_inclination" title="Orbital inclination">inclination</a> of less than a degree, inclined by only 0.35° from Saturn's equatorial plane.<sup id="cite_ref-NSSDC_5-3" class="reference"><a href="#cite_note-NSSDC-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Rhea is <a href="/wiki/Tidal_locking" title="Tidal locking">tidally locked</a> and rotates synchronously; that is, it <a href="/wiki/Rotation" title="Rotation">rotates</a> at the same speed it revolves (orbits), so one hemisphere is always facing towards Saturn. This is called the <a href="/wiki/Near_pole" class="mw-redirect" title="Near pole">near pole</a>. Equally, one hemisphere always faces forward, relative to the direction of movement; this is called the <a href="/wiki/Leading_hemisphere" class="mw-redirect" title="Leading hemisphere">leading hemisphere</a>; the other side is the trailing hemisphere, which faces backwards relative to the moon's motion.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Physical_characteristics">Physical characteristics</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=4" title="Edit section: Physical characteristics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Size,_mass,_and_internal_structure"><span id="Size.2C_mass.2C_and_internal_structure"></span>Size, mass, and internal structure</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=5" title="Edit section: Size, mass, and internal structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Rhea,_Earth_%26_Moon_size_comparison.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Rhea%2C_Earth_%26_Moon_size_comparison.jpg/250px-Rhea%2C_Earth_%26_Moon_size_comparison.jpg" decoding="async" width="250" height="169" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Rhea%2C_Earth_%26_Moon_size_comparison.jpg/375px-Rhea%2C_Earth_%26_Moon_size_comparison.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Rhea%2C_Earth_%26_Moon_size_comparison.jpg/500px-Rhea%2C_Earth_%26_Moon_size_comparison.jpg 2x" data-file-width="3000" data-file-height="2026" /></a><figcaption>Size comparison of <a href="/wiki/Earth" title="Earth">Earth</a> (right), the <a href="/wiki/Moon" title="Moon">Moon</a> (left top), and Rhea (left down)</figcaption></figure> <p>Rhea is an icy body with a <a href="/wiki/Density" title="Density">density</a> of about 1.236 g/cm<sup>3</sup>. This low density indicates that it is made of ~25% rock (density ~3.25 g/cm<sup>3</sup>) and ~75% water ice (density ~0.93 g/cm<sup>3</sup>). A layer of <a href="/wiki/Ice_II" class="mw-redirect" title="Ice II">Ice II</a> (a high-pressure and extra-low temperature form of ice) is believed, based on the moon's temperature profile, to start around 350 to 450 kilometres (220 to 280 mi) beneath the surface.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> Rhea is 1,528 kilometres (949 mi) in diameter, but is still only a third of the size of <a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a>, Saturn's biggest moon.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> Although Rhea is the ninth-largest moon, it is only the tenth-most massive moon. Indeed, <a href="/wiki/Oberon_(moon)" title="Oberon (moon)">Oberon</a>, the second-largest moon of Uranus, has almost the same size, but is significantly denser than Rhea (1.63 vs 1.24) and thus more massive, although Rhea is slightly larger by volume.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>d<span class="cite-bracket">]</span></a></sup> The surface area of the moon can be estimated at 7,330,000 square kilometres (2,830,000 sq mi), similar to Australia (7,688,287 km<sup>2</sup>).<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-surface_area_9-1" class="reference"><a href="#cite_note-surface_area-9"><span class="cite-bracket">[</span>b<span class="cite-bracket">]</span></a></sup> </p><p>Before the <i><a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens">Cassini–Huygens</a></i> mission, it was assumed that Rhea had a rocky core.<sup id="cite_ref-Anderson2003_27-0" class="reference"><a href="#cite_note-Anderson2003-27"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> However, measurements taken during a close flyby by the <a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens"><i>Cassini</i></a> orbiter in 2005 cast this into doubt. In a paper published in 2007 it was claimed that the axial dimensionless <a href="/wiki/Moment_of_inertia" title="Moment of inertia">moment of inertia</a> coefficient was 0.4.<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>e<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Anderson_2007_28-1" class="reference"><a href="#cite_note-Anderson_2007-28"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> Such a value indicated that Rhea had an almost homogeneous interior (with some compression of ice in the center) while the existence of a rocky core would imply a moment of inertia of about 0.34.<sup id="cite_ref-Anderson2003_27-1" class="reference"><a href="#cite_note-Anderson2003-27"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> In the same year another paper claimed the moment of inertia was about 0.37.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>f<span class="cite-bracket">]</span></a></sup> Rhea being either partially or fully differentiated would be consistent with the observations of the <i>Cassini</i> probe.<sup id="cite_ref-Iess2007_30-1" class="reference"><a href="#cite_note-Iess2007-30"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> A year later yet another paper claimed that the moon may not be in <a href="/wiki/Hydrostatic_equilibrium" title="Hydrostatic equilibrium">hydrostatic equilibrium</a>, meaning that the moment of inertia cannot be determined from the gravity data alone.<sup id="cite_ref-MacKenzie2008_32-0" class="reference"><a href="#cite_note-MacKenzie2008-32"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> In 2008 an author of the first paper tried to reconcile these three disparate results. He concluded that there is a systematic error in the <i>Cassini</i> radio Doppler data used in the analysis, but after restricting the analysis to a subset of data obtained closest to the moon, he arrived at his old result that Rhea was in hydrostatic equilibrium and had a moment of inertia of about 0.4, again implying a homogeneous interior.<sup id="cite_ref-Anderson2008_12-1" class="reference"><a href="#cite_note-Anderson2008-12"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/Triaxial_ellipsoid" class="mw-redirect" title="Triaxial ellipsoid">triaxial</a> shape of Rhea is consistent with a homogeneous body in <a href="/wiki/Hydrostatic_equilibrium" title="Hydrostatic equilibrium">hydrostatic equilibrium</a> rotating at Rhea's angular velocity.<sup id="cite_ref-Thomas2007_33-0" class="reference"><a href="#cite_note-Thomas2007-33"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> Modelling in 2006 suggested that Rhea could be barely capable of sustaining an <a href="/wiki/Subsurface_ocean" class="mw-redirect" title="Subsurface ocean">internal liquid-water ocean</a> through heating by <a href="/wiki/Radioactive_decay" title="Radioactive decay">radioactive decay</a>; such an ocean would have to be at about 176 K, the <a href="/wiki/Eutectic_temperature" class="mw-redirect" title="Eutectic temperature">eutectic temperature</a> for the water–ammonia system.<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> More recent indications are that Rhea has a homogeneous interior and hence that this ocean does not exist.<sup id="cite_ref-Anderson2008_12-2" class="reference"><a href="#cite_note-Anderson2008-12"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Surface_features">Surface features</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=6" title="Edit section: Surface features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/List_of_geological_features_on_Rhea" title="List of geological features on Rhea">List of geological features on Rhea</a></div> <p>Rhea's features resemble those of <a href="/wiki/Dione_(moon)" title="Dione (moon)">Dione</a>, with distinct and dissmillar leading and trailing hemispheres, suggesting similar composition and histories. The temperature on Rhea is 99 K (−174 °C) in direct sunlight and between 73 K (−200 °C) and 53 K (−220 °C) in the shade. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:PIA18310-SaturnMoon-Rhea-20150210.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/PIA18310-SaturnMoon-Rhea-20150210.jpg/220px-PIA18310-SaturnMoon-Rhea-20150210.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/PIA18310-SaturnMoon-Rhea-20150210.jpg/330px-PIA18310-SaturnMoon-Rhea-20150210.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/PIA18310-SaturnMoon-Rhea-20150210.jpg/440px-PIA18310-SaturnMoon-Rhea-20150210.jpg 2x" data-file-width="1020" data-file-height="1020" /></a><figcaption>Surface features on Rhea well defined due to the lighting</figcaption></figure> <p>Rhea has a rather typical heavily <a href="/wiki/Impact_crater" title="Impact crater">cratered</a> surface,<sup id="cite_ref-MooreSchenk_2004_35-0" class="reference"><a href="#cite_note-MooreSchenk_2004-35"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> with the exceptions of a few large Dione-type chasmata or fractures (formerly known as <a href="/wiki/Dione_(moon)#Ice_cliffs_(formerly_'wispy_terrain')" title="Dione (moon)">wispy terrain</a>) on the trailing hemisphere (the side facing away from the direction of motion along Rhea's orbit)<sup id="cite_ref-Wagner2008_36-0" class="reference"><a href="#cite_note-Wagner2008-36"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> and a very faint "line" of material at Rhea's equator that may have been deposited by material deorbiting from its rings.<sup id="cite_ref-Schenk2009_37-0" class="reference"><a href="#cite_note-Schenk2009-37"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> Rhea has two very large impact basins on its hemisphere facing away from Saturn, which are about 400 and 500 km across.<sup id="cite_ref-Wagner2008_36-1" class="reference"><a href="#cite_note-Wagner2008-36"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> The more northerly and less degraded of the two, called <a href="/wiki/Tirawa_(crater)" title="Tirawa (crater)">Tirawa</a>, is roughly comparable in size to the basin Odysseus on <a href="/wiki/Tethys_(moon)" title="Tethys (moon)">Tethys</a>.<sup id="cite_ref-MooreSchenk_2004_35-1" class="reference"><a href="#cite_note-MooreSchenk_2004-35"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> There is a 48 km-diameter impact crater at 112°W that is prominent because of an extended system of bright <a href="/wiki/Ray_system" title="Ray system">rays</a>, which extend up to 400 km (250 mi) away from the crater, across most of one hemisphere.<sup id="cite_ref-Wagner2008_36-2" class="reference"><a href="#cite_note-Wagner2008-36"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-38" class="reference"><a href="#cite_note-38"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> This crater, called <a href="/wiki/Inktomi_(crater)" title="Inktomi (crater)">Inktomi</a>, is nicknamed "The Splat", and may be one of the youngest craters on the inner moons of Saturn. This was hypothesized in a 2007 paper published by <a href="/wiki/Lunar_and_Planetary_Science_Conference" title="Lunar and Planetary Science Conference"><i>Lunar and Planetary Science</i></a>.<sup id="cite_ref-Wagner2008_36-3" class="reference"><a href="#cite_note-Wagner2008-36"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> Rhea's <a href="/wiki/Impact_crater" title="Impact crater">impact craters</a> are more crisply defined than the flatter craters that are pervasive on <a href="/wiki/Ganymede_(moon)" title="Ganymede (moon)">Ganymede</a> and <a href="/wiki/Callisto_(moon)" title="Callisto (moon)">Callisto</a>; it is theorized that this is due to a much lower <a href="/wiki/Surface_gravity" title="Surface gravity">surface gravity</a> (0.26 <a href="/wiki/Metre_per_second_squared" title="Metre per second squared">m/s<sup>2</sup></a>, compared to Ganymede's 1.428 m/s<sup>2</sup> and Callisto's 1.235 m/s<sup>2</sup>) and a stiffer crust of ice. Similarly, <a href="/wiki/Ejecta_blanket" title="Ejecta blanket">ejecta blankets</a> – asymmetrical blankets of ejected particles surrounding impact craters – are not present on Rhea, potentially another result of the moon's low surface gravity.<sup id="cite_ref-39" class="reference"><a href="#cite_note-39"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Rhea_at_approximately_2,348_miles_(3,778_kilometers)_away.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Rhea_at_approximately_2%2C348_miles_%283%2C778_kilometers%29_away.jpg/220px-Rhea_at_approximately_2%2C348_miles_%283%2C778_kilometers%29_away.jpg" decoding="async" width="220" height="260" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Rhea_at_approximately_2%2C348_miles_%283%2C778_kilometers%29_away.jpg/330px-Rhea_at_approximately_2%2C348_miles_%283%2C778_kilometers%29_away.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Rhea_at_approximately_2%2C348_miles_%283%2C778_kilometers%29_away.jpg/440px-Rhea_at_approximately_2%2C348_miles_%283%2C778_kilometers%29_away.jpg 2x" data-file-width="864" data-file-height="1023" /></a><figcaption>Closeup showing two craters on Rhea's surface taken in 2013 by <a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens"><i>Cassini</i> spacecraft</a></figcaption></figure> <p>Its surface can be divided into two geologically different areas based on <a href="/wiki/Impact_crater" title="Impact crater">crater</a> density; the first area contains craters which are larger than 40 km in diameter, whereas the second area, in parts of the polar and equatorial regions, has only craters under that size. This suggests that a major resurfacing event occurred some time during its formation. The leading hemisphere is heavily cratered and uniformly bright. As on <a href="/wiki/Callisto_(moon)" title="Callisto (moon)">Callisto</a>, the craters lack the high relief features seen on the <a href="/wiki/Moon" title="Moon">Moon</a> and <a href="/wiki/Mercury_(planet)" title="Mercury (planet)">Mercury</a>. It has been theorized that these cratered plains are up to four billion years old on average.<sup id="cite_ref-40" class="reference"><a href="#cite_note-40"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> On the trailing hemisphere there is a network of bright swaths on a dark background, and fewer craters.<sup id="cite_ref-41" class="reference"><a href="#cite_note-41"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> It is believed, based on data from the Cassini probe, that these are tectonic features: depressions (<a href="/wiki/Graben" title="Graben">graben</a>) and troughs, with ice-covered cliff sides causing the lines' whiteness (more technically their <a href="/wiki/Albedo" title="Albedo">albedo</a>).<sup id="cite_ref-42" class="reference"><a href="#cite_note-42"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> The extensive dark areas are thought to be deposited <a href="/wiki/Tholin" title="Tholin">tholins</a>, which are a mix of complex <a href="/wiki/Organic_compound" title="Organic compound">organic compounds</a> generated on the ice by <a href="/wiki/Pyrolysis" title="Pyrolysis">pyrolysis</a> and <a href="/wiki/Radiolysis" title="Radiolysis">radiolysis</a> of simple compounds containing carbon, nitrogen and hydrogen.<sup id="cite_ref-Cruikshank_2005_43-0" class="reference"><a href="#cite_note-Cruikshank_2005-43"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> The trailing side of Rhea's surface is <a href="/wiki/Magnetosphere_of_Saturn#Sources_and_transport_of_plasma" title="Magnetosphere of Saturn">irradiated by Saturn's magnetosphere</a>, which may cause chemical-level changes on the surface, including <a href="/wiki/Radiolysis" title="Radiolysis">radiolysis</a> (see <a href="#Atmosphere">§ Atmosphere</a>). Particles from Saturn's <a href="/wiki/E_Ring_(ring_of_Saturn)" class="mw-redirect" title="E Ring (ring of Saturn)">E-ring</a> are also flung onto the moon's leading hemisphere, coating it.<sup id="cite_ref-:1_44-0" class="reference"><a href="#cite_note-:1-44"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> </p><p>Rhea has some evidence of endogenic activity – that is, activity originating from within the moon, such as heating and <a href="/wiki/Cryovolcano" title="Cryovolcano">cryovolcanic</a> activity: there are <a href="/wiki/Fault_(geology)" title="Fault (geology)">fault</a> systems and craters with uplifted bases (so-called "relaxed" craters), although the latter is apparently only present in large craters more than 100 km (62 mi) across.<sup id="cite_ref-45" class="reference"><a href="#cite_note-45"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-46" class="reference"><a href="#cite_note-46"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:1_44-1" class="reference"><a href="#cite_note-:1-44"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Formation">Formation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=7" title="Edit section: Formation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div><p> The moons of Saturn are thought to have formed through <a href="/wiki/Accretion_disc" class="mw-redirect" title="Accretion disc">co-accretion</a>, a similar process to that believed to have formed the planets in the Solar System. As the young giant planets formed, they were surrounded by discs of material that gradually coalesced into moons. However, a model proposed by <a href="/wiki/Erik_Ian_Asphaug" title="Erik Ian Asphaug">Erik Asphaug</a> and <a href="/w/index.php?title=Andreas_Reufer&action=edit&redlink=1" class="new" title="Andreas Reufer (page does not exist)">Andreas Reufer</a> for the formation of <a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a> may also shine a new light on the origin of Rhea and <a href="/wiki/Iapetus_(moon)" title="Iapetus (moon)">Iapetus</a>. In this model, Titan was formed in a series of <a href="/wiki/Giant_impact" class="mw-redirect" title="Giant impact">giant impacts</a> between pre-existing moons, and Rhea and Iapetus are thought to have formed from part of the debris of these collisions.<sup id="cite_ref-47" class="reference"><a href="#cite_note-47"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup></p><ul class="gallery mw-gallery-packed center"> <li class="gallerybox" style="width: 302px"> <div class="thumb" style="width: 300px;"><span typeof="mw:File"><a href="/wiki/File:Rhea_ice_cliffs.jpg" class="mw-file-description" title="Image of the wispy hemisphere, showing ice cliffs – Powehiwehi (upper center); chasmata stretch from upper left to right center – Onokoro Catenae (lower right)"><img alt="Image of the wispy hemisphere, showing ice cliffs – Powehiwehi (upper center); chasmata stretch from upper left to right center – Onokoro Catenae (lower right)" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Rhea_ice_cliffs.jpg/450px-Rhea_ice_cliffs.jpg" decoding="async" width="300" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Rhea_ice_cliffs.jpg/675px-Rhea_ice_cliffs.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Rhea_ice_cliffs.jpg/900px-Rhea_ice_cliffs.jpg 2x" data-file-width="1024" data-file-height="1024" /></a></span></div> <div class="gallerytext">Image of the wispy hemisphere, showing ice cliffs – Powehiwehi (upper center); chasmata stretch from upper left to right center – Onokoro Catenae (lower right)</div> </li> <li class="gallerybox" style="width: 302px"> <div class="thumb" style="width: 300px;"><span typeof="mw:File"><a href="/wiki/File:PIA08148_(Rhea-Splat).jpg" class="mw-file-description" title="View of Rhea's leading hemisphere with crater Inktomi and its prominent ray system just below center; impact basin Tirawa is at upper left"><img alt="View of Rhea's leading hemisphere with crater Inktomi and its prominent ray system just below center; impact basin Tirawa is at upper left" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/PIA08148_%28Rhea-Splat%29.jpg/450px-PIA08148_%28Rhea-Splat%29.jpg" decoding="async" width="300" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/PIA08148_%28Rhea-Splat%29.jpg/675px-PIA08148_%28Rhea-Splat%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/PIA08148_%28Rhea-Splat%29.jpg/900px-PIA08148_%28Rhea-Splat%29.jpg 2x" data-file-width="953" data-file-height="953" /></a></span></div> <div class="gallerytext">View of Rhea's leading hemisphere with crater Inktomi and its prominent <a href="/wiki/Ray_system" title="Ray system">ray system</a> just below center; <a href="/wiki/Impact_basin" class="mw-redirect" title="Impact basin">impact basin</a> <a href="/wiki/Tirawa_(crater)" title="Tirawa (crater)">Tirawa</a> is at upper left</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="Atmosphere">Atmosphere</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=8" title="Edit section: Atmosphere"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>On November 27, 2010, <a href="/wiki/NASA" title="NASA">NASA</a> announced the discovery of an extremely tenuous atmosphere—an <a href="/wiki/Exosphere" title="Exosphere">exosphere</a>. It consists of oxygen and carbon dioxide in proportion of roughly 5 to 2. The surface density of the exosphere is from 10<sup>5</sup> to 10<sup>6</sup> molecules in a cubic centimeter, depending on local temperature. The main source of oxygen is <a href="/wiki/Radiolysis" title="Radiolysis">radiolysis</a> of water ice at the surface via irradiation from the <a href="/wiki/Magnetosphere_of_Saturn" title="Magnetosphere of Saturn">magnetosphere of Saturn</a>. The source of the carbon dioxide is less clear, but it may be related to <a href="/wiki/Oxidation" class="mw-redirect" title="Oxidation">oxidation</a> of the organics present in ice or to <a href="/wiki/Outgassing" title="Outgassing">outgassing</a> of the moon's interior.<sup id="cite_ref-:1_44-2" class="reference"><a href="#cite_note-:1-44"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-atmosphere_48-0" class="reference"><a href="#cite_note-atmosphere-48"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Teolis2010_49-0" class="reference"><a href="#cite_note-Teolis2010-49"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Possible_ring_system">Possible ring system</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=9" title="Edit section: Possible ring system"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Rings_of_Rhea" title="Rings of Rhea">Rings of Rhea</a></div> <p>On March 6, 2008, <a href="/wiki/NASA" title="NASA">NASA</a> announced that Rhea may have a weak ring system. This would mark the first discovery of rings around a moon. The rings' existence was inferred by observed changes in the flow of electrons trapped by Saturn's magnetic field as <i>Cassini</i> passed by Rhea.<sup id="cite_ref-rings_50-0" class="reference"><a href="#cite_note-rings-50"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Jones2008_51-0" class="reference"><a href="#cite_note-Jones2008-51"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-LakdawallaE_52-0" class="reference"><a href="#cite_note-LakdawallaE-52"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup> Dust and debris could extend out to Rhea's <a href="/wiki/Hill_sphere" title="Hill sphere">Hill sphere</a>, but were thought to be denser nearer the moon, with three narrow rings of higher density. The case for a ring was strengthened by the subsequent finding of the presence of a set of small ultraviolet-bright spots distributed along Rhea's equator (interpreted as the impact points of deorbiting ring material).<sup id="cite_ref-Lakdawalla2_53-0" class="reference"><a href="#cite_note-Lakdawalla2-53"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup> However, when <i>Cassini</i> made targeted observations of the putative ring plane from several angles, there was no evidence of ring material found, suggesting that another explanation for the earlier observations is needed.<sup id="cite_ref-Tiscareno2010_54-0" class="reference"><a href="#cite_note-Tiscareno2010-54"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-norings_55-0" class="reference"><a href="#cite_note-norings-55"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Exploration">Exploration</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=10" title="Edit section: Exploration"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The first images of Rhea were obtained by <i><a href="/wiki/Voyager_program" title="Voyager program">Voyager 1 & 2</a></i> spacecraft in 1980–1981. </p><p>There were five close targeted fly-bys by the <i><a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens">Cassini</a></i> orbiter, which was one part of the dual orbiter and lander <i>Cassini–Huygens</i> mission. Launched in 1997, <i>Cassini–Huygens</i> was targeted at the Saturn system; in total it took more than 450 thousand images.<sup id="cite_ref-56" class="reference"><a href="#cite_note-56"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> <i>Cassini</i> passed Rhea at a distance of 500 km on November 26, 2005; at a distance of 5,750 km on August 30, 2007; at a distance of 100 km on March 2, 2010; at 69 km flyby on January 11, 2011;<sup id="cite_ref-CookJ2011_57-0" class="reference"><a href="#cite_note-CookJ2011-57"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup> and a last flyby at 992 km on March 9, 2013.<sup id="cite_ref-LastFlybyRhea_58-0" class="reference"><a href="#cite_note-LastFlybyRhea-58"><span class="cite-bracket">[</span>52<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=11" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Planet#Objects_formerly_considered_planets" title="Planet">Former classification of planets</a></li> <li><a href="/wiki/List_of_natural_satellites" title="List of natural satellites">List of natural satellites</a></li> <li><a href="/wiki/Saturn%27s_moons_in_fiction#Rhea" class="mw-redirect" title="Saturn's moons in fiction">Rhea in fiction</a></li> <li><a href="/wiki/Rings_of_Rhea" title="Rings of Rhea">Rings of Rhea</a></li> <li><a href="/wiki/Subsatellite" title="Subsatellite">Subsatellite</a></li> <li><a href="/wiki/Moons_of_Saturn" title="Moons of Saturn">Moons of Saturn</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=12" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-columns references-column-width reflist-lower-alpha" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-calculated-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-calculated_6-0">^</a></b></span> <span class="reference-text">Calculated on the basis of other parameters.</span> </li> <li id="cite_note-surface_area-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-surface_area_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-surface_area_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">The <a href="/wiki/Surface_area" title="Surface area">surface area</a> can be estimated, given the radius, with the formula <span class="texhtml">4<i>πr</i><sup>2</sup></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text">Surface area derived from the radius (<i>r</i>): <span class="texhtml">4\pi r^2</span>.</span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text">The moons more massive than Rhea are: the <a href="/wiki/Moon" title="Moon">Moon</a>, the four <a href="/wiki/Galilean_moons" title="Galilean moons">Galilean moons</a>, Titan, Triton, Titania, and Oberon. Oberon, Uranus's second-largest moon, has a radius that is ~0.4% smaller than Rhea's, but a density that is ~26% greater. See <a rel="nofollow" class="external text" href="https://ssd.jpl.nasa.gov/?sat_phys_par">JPLSSD.</a></span> </li> <li id="cite_note-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-29">^</a></b></span> <span class="reference-text"> More precisely, 0.3911.<sup id="cite_ref-Anderson_2007_28-0" class="reference"><a href="#cite_note-Anderson_2007-28"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> </span> </li> <li id="cite_note-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-31">^</a></b></span> <span class="reference-text"> More precisely, 0.3721.<sup id="cite_ref-Iess2007_30-0" class="reference"><a href="#cite_note-Iess2007-30"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> </span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rhea_(moon)&action=edit&section=13" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-space.com.Rhea-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-space.com.Rhea_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-space.com.Rhea_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-space.com.Rhea_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-space.com.Rhea_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-space.com.Rhea_1-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-space.com.Rhea_1-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-space.com.Rhea_1-6"><sup><i><b>g</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFTillman2016" class="citation web cs1">Tillman, Nola Taylor (2016-06-29). <a rel="nofollow" class="external text" href="http://www.space.com/20577-rhea-saturn-s-dirty-snowball-moon.html">"Rhea: Saturn's dirty snowball moon"</a>. <i>space.com</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=space.com&rft.atitle=Rhea%3A+Saturn%27s+dirty+snowball+moon&rft.date=2016-06-29&rft.aulast=Tillman&rft.aufirst=Nola+Taylor&rft_id=http%3A%2F%2Fwww.space.com%2F20577-rhea-saturn-s-dirty-snowball-moon.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFConsulmagnoRyche1982" class="citation journal cs1">Consulmagno, G.; Ryche, H. 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Retrieved <span class="nowrap">Nov 30,</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=EOS&rft.atitle=Pronouncing+the+names+of+the+moons+of+Saturn&rft.volume=63&rft.issue=6&rft.pages=146-147&rft.date=1982-02-09&rft_id=info%3Adoi%2F10.1029%2FEO063i006p00146&rft.aulast=Consulmagno&rft.aufirst=G.&rft.au=Ryche%2C+H.&rft_id=https%3A%2F%2Fwww.vaticanobservatory.org%2Fwp-content%2Fuploads%2F2019%2F12%2FConsolmagno-Reiche-Pronouncing-Moons-of-Saturn.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">Moore et al. (1984) "The Geomorphology of Rhea", <i>Proceedings of the fifteenth Lunar and Planetary Science</i>, Part 2, p C-791–C-794</span> </li> <li id="cite_note-NSES-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-NSES_4-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.minorplanetcenter.org/iau/NatSats/NaturalSatellites.html">"Natural Satellites Ephemeris Service"</a>. <i>Minor Planet Center</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Minor+Planet+Center&rft.atitle=Natural+Satellites+Ephemeris+Service&rft_id=http%3A%2F%2Fwww.minorplanetcenter.org%2Fiau%2FNatSats%2FNaturalSatellites.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-NSSDC-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-NSSDC_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-NSSDC_5-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-NSSDC_5-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-NSSDC_5-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20240210110147/https://nssdc.gsfc.nasa.gov/planetary/factsheet/saturniansatfact.html">"Saturnian Satellite Fact Sheet"</a>. <i><a href="/wiki/National_Space_Science_Data_Center" class="mw-redirect" title="National Space Science Data Center">National Space Science Data Center</a></i>. Archived from <a rel="nofollow" class="external text" href="https://nssdc.gsfc.nasa.gov/planetary/factsheet/saturniansatfact.html">the original</a> on 10 Feb 2024.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=National+Space+Science+Data+Center&rft.atitle=Saturnian+Satellite+Fact+Sheet&rft_id=https%3A%2F%2Fnssdc.gsfc.nasa.gov%2Fplanetary%2Ffactsheet%2Fsaturniansatfact.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-Roatsch_et_al._2009-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-Roatsch_et_al._2009_7-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRoatsch_Jaumann_et_al.2009" class="citation book cs1">Roatsch, T.; Jaumann, R.; Stephan, K.; Thomas, P. C. (2009). 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(2007). <a rel="nofollow" class="external text" href="https://doi.org/10.1029%2F2006GL028100">"Saturn's satellite Rhea is a homogeneous mix of rock and ice"</a>. <i>Geophysical Research Letters</i>. <b>34</b> (2): L02202. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2007GeoRL..34.2202A">2007GeoRL..34.2202A</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1029%2F2006GL028100">10.1029/2006GL028100</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Saturn%27s+satellite+Rhea+is+a+homogeneous+mix+of+rock+and+ice&rft.volume=34&rft.issue=2&rft.pages=L02202&rft.date=2007&rft_id=info%3Adoi%2F10.1029%2F2006GL028100&rft_id=info%3Abibcode%2F2007GeoRL..34.2202A&rft.aulast=Anderson&rft.aufirst=J.+D.&rft.au=Schubert%2C+G.&rft_id=https%3A%2F%2Fdoi.org%2F10.1029%252F2006GL028100&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-Anderson2008-12"><span class="mw-cite-backlink">^ <a href="#cite_ref-Anderson2008_12-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Anderson2008_12-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Anderson2008_12-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAnderson2008" class="citation conference cs1">Anderson, John D. (July 2008). <i>Rhea's Gravitational Field and Internal Structure</i>. 37th COSPAR Scientific Assembly. Held 13–20 July 2008, in Montréal, Canada. p. 89. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2008cosp...37...89A">2008cosp...37...89A</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=conference&rft.btitle=Rhea%27s+Gravitational+Field+and+Internal+Structure&rft.pages=89&rft.date=2008-07&rft_id=info%3Abibcode%2F2008cosp...37...89A&rft.aulast=Anderson&rft.aufirst=John+D.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-Verbiscer_et_al._2007-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-Verbiscer_et_al._2007_13-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVerbiscer_French_et_al.2007" class="citation journal cs1">Verbiscer, A.; French, R.; Showalter, M.; Helfenstein, P. (9 February 2007). "Enceladus: Cosmic Graffiti Artist Caught in the Act". <i>Science</i>. <b>315</b> (5813): 815. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2007Sci...315..815V">2007Sci...315..815V</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1126%2Fscience.1134681">10.1126/science.1134681</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/17289992">17289992</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:21932253">21932253</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Science&rft.atitle=Enceladus%3A+Cosmic+Graffiti+Artist+Caught+in+the+Act&rft.volume=315&rft.issue=5813&rft.pages=815&rft.date=2007-02-09&rft_id=info%3Adoi%2F10.1126%2Fscience.1134681&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A21932253%23id-name%3DS2CID&rft_id=info%3Apmid%2F17289992&rft_id=info%3Abibcode%2F2007Sci...315..815V&rft.aulast=Verbiscer&rft.aufirst=A.&rft.au=French%2C+R.&rft.au=Showalter%2C+M.&rft.au=Helfenstein%2C+P.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span> (supporting online material, table S1)</span> </li> <li id="cite_note-Observatorio_ARVAL-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-Observatorio_ARVAL_14-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFObservatorio_ARVAL" class="citation web cs1">Observatorio ARVAL (April 15, 2007). <a rel="nofollow" class="external text" href="http://www.oarval.org/ClasSaten.htm">"Classic Satellites of the Solar System"</a>. 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Retrieved <span class="nowrap">2011-12-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Classic+Satellites+of+the+Solar+System&rft.pub=Observatorio+ARVAL&rft.date=2007-04-15&rft.au=Observatorio+ARVAL&rft_id=http%3A%2F%2Fwww.oarval.org%2FClasSaten.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDavid_Leverington2003" class="citation book cs1">David Leverington (29 May 2003). <a rel="nofollow" class="external text" href="https://books.google.ca/books?id=6Hpi202ybn8C&newbks=0&dq=%22Discovery+of+Rhea%22&source=gbs_navlinks_s"><i>Babylon to Voyager and Beyond: A History of Planetary Astronomy</i></a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-521-80840-8" title="Special:BookSources/978-0-521-80840-8"><bdi>978-0-521-80840-8</bdi></a>. <a href="/wiki/LCCN_(identifier)" class="mw-redirect" title="LCCN (identifier)">LCCN</a> <a rel="nofollow" class="external text" href="https://lccn.loc.gov/2002031557">2002031557</a>. <a href="/wiki/WDQ_(identifier)" class="mw-redirect" title="WDQ (identifier)">Wikidata</a> <a href="https://www.wikidata.org/wiki/Q126386131" class="extiw" title="d:Q126386131">Q126386131</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Babylon+to+Voyager+and+Beyond%3A+A+History+of+Planetary+Astronomy&rft.date=2003-05-29&rft_id=info%3Alccn%2F2002031557&rft.isbn=978-0-521-80840-8&rft.au=David+Leverington&rft_id=https%3A%2F%2Fbooks.google.ca%2Fbooks%3Fid%3D6Hpi202ybn8C%26newbks%3D0%26dq%3D%2522Discovery%2Bof%2BRhea%2522%26source%3Dgbs_navlinks_s&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://solarsystem.nasa.gov/moons/saturn-moons/rhea/in-depth/">"In Depth | Rhea"</a>. <i>NASA Solar System Exploration</i>. 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Retrieved <span class="nowrap">January 7,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=NASA+Solar+System+Exploration&rft.atitle=In+Depth+%7C+Rhea&rft.date=2019-12-19&rft_id=https%3A%2F%2Fsolarsystem.nasa.gov%2Fmoons%2Fsaturn-moons%2Frhea%2Fin-depth%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-:0-17"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_17-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_17-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://planetarynames.wr.usgs.gov/Page/Planets">"Planet and Satellite Names and Discoverers"</a>. <i>Gazetteer of Planetary Nomenclature</i>. USGS Astrogeology. 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Elsevier. 2015-04-17. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-444-53803-1" title="Special:BookSources/978-0-444-53803-1"><bdi>978-0-444-53803-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Treatise+on+Geophysics&rft.pub=Elsevier&rft.date=2015-04-17&rft.isbn=978-0-444-53803-1&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DRg6dBAAAQBAJ%26dq%3D%2522surface%2Bgravity%2522%2Bof%2B%2522rhea%2522%26pg%3DRA4-PA628&rfr_id=info%3Asid%2Fen.wikipedia.org%3ARhea+%28moon%29" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHobbs2010" class="citation book cs1">Hobbs, Peter Victor (2010-05-06). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=7Is6AwAAQBAJ&pg=PA61"><i>Ice Physics</i></a>. 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font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Rhea_(moon)" class="extiw" title="commons:Category:Rhea (moon)">Rhea</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070801204714/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Sat_Rhea">Rhea Profile</a> at <a rel="nofollow" class="external text" href="https://solarsystem.nasa.gov">NASA's Solar System Exploration site</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060831203603/http://www.planetary.org/explore/topics/saturn/rhea.html">The Planetary Society: Rhea</a></li> <li><a rel="nofollow" class="external text" href="http://ciclops.org/search.php?x=20&y=7&search=Rhea"><i>Cassini</i> images of Rhea</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110813151222/http://ciclops.org/search.php?x=20&y=7&search=Rhea">Archived</a> 2011-08-13 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li> <li><a rel="nofollow" class="external text" href="https://photojournal.jpl.nasa.gov/target/Rhea">Images of Rhea at JPL's Planetary Photojournal</a></li> <li>Movie of <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100601171509/http://sos.noaa.gov/videos/Rhea.mov">Rhea's rotation</a> from the National Oceanic and Atmospheric Administration site</li> <li>Rhea <a rel="nofollow" class="external text" href="http://www.ciclops.org/view/7313/Map_of_Rhea_-_March_2012">global</a> and <a rel="nofollow" class="external text" href="http://www.ciclops.org/view/7314/Rhea_Polar_Maps_-_March_2012">polar</a> basemaps (March 2012) from Cassini images</li> <li><a rel="nofollow" class="external text" href="http://www.ciclops.org/view/6626/The_Rhea_Atlas">Rhea altlas</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130424012008/http://www.ciclops.org/view/6626/The_Rhea_Atlas">Archived</a> 2013-04-24 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> (released December 2010) from Cassini images</li> <li><a rel="nofollow" class="external text" href="https://planetarynames.wr.usgs.gov/Page/RHEA/target">Rhea nomenclature</a> and <a rel="nofollow" class="external text" href="https://planetarynames.wr.usgs.gov/images/rhea_comp.pdf">Rhea map with feature names</a> from the <a rel="nofollow" class="external text" href="https://planetarynames.wr.usgs.gov">USGS planetary nomenclature page</a></li> <li><a rel="nofollow" class="external text" href="https://www.google.com/maps/space/rhea/@3.4035608,-102.4187081,6475987m/data=!3m1!1e3">Google Rhea 3D</a>, interactive map of the moon</li> <li><a rel="nofollow" class="external text" href="https://www.bbc.co.uk/news/science-environment-11834954">Saturn's moon Rhea has thin atmosphere</a></li> <li><a rel="nofollow" class="external text" href="https://royalsocietypublishing.org/doi/epdf/10.1098/rstl.1686.0013">An extract of the Journal Des Scavans. of April 22 ft. 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class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Craters</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Inktomi_(crater)" title="Inktomi (crater)">Inktomi</a></li> <li><a href="/wiki/Tirawa_(crater)" title="Tirawa (crater)">Tirawa</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Features</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_geological_features_on_Rhea" title="List of geological features on Rhea">List</a></li></ul> </div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:PIA07763_Rhea_full_globe5.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ab/PIA07763_Rhea_full_globe5.jpg/150px-PIA07763_Rhea_full_globe5.jpg" decoding="async" width="150" height="150" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ab/PIA07763_Rhea_full_globe5.jpg/225px-PIA07763_Rhea_full_globe5.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ab/PIA07763_Rhea_full_globe5.jpg/300px-PIA07763_Rhea_full_globe5.jpg 2x" data-file-width="4920" data-file-height="4920" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Discoverer</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Giovanni_Domenico_Cassini" title="Giovanni Domenico Cassini">Giovanni Domenico Cassini</a></li> <li><a href="/wiki/Sidera_Lodoicea" title="Sidera Lodoicea">Sidera Lodoicea</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Exploration</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Past</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Pioneer_11" title="Pioneer 11">Pioneer 11</a></i></li> <li><i><a href="/wiki/Voyager_1" title="Voyager 1">Voyager 1</a></i></li> <li><i><a href="/wiki/Voyager_2" title="Voyager 2">Voyager 2</a></i></li> <li><i><a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens">Cassini–Huygens</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Proposed</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Titan_Saturn_System_Mission" title="Titan Saturn System Mission">Titan Saturn System Mission</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Saturn%27s_moons_in_fiction#Rhea" class="mw-redirect" title="Saturn's moons in fiction">In fiction</a></li> <li><a href="/wiki/Rhea_(mythology)" title="Rhea (mythology)">In mythology</a></li> <li><a href="/wiki/Rings_of_Rhea" title="Rings of Rhea">Rings</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Moons_of_Saturn" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="text-align: center;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Moons_of_Saturn" title="Template:Moons of Saturn"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Moons_of_Saturn" title="Template talk:Moons of Saturn"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Moons_of_Saturn" title="Special:EditPage/Template:Moons of Saturn"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Moons_of_Saturn" style="font-size:114%;margin:0 4em"><a href="/wiki/Moons_of_Saturn" title="Moons of Saturn">Moons of Saturn</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div>Listed in approximate increasing distance from Saturn</div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Moons_of_Saturn#Ring_moonlets" title="Moons of Saturn">Ring moonlets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/S/2009_S_1" title="S/2009 S 1">S/2009 S 1</a></li> <li><a href="/wiki/Aegaeon_(moon)" title="Aegaeon (moon)">Aegaeon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Shepherd_moon" title="Shepherd moon">Ring shepherds</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pan_(moon)" title="Pan (moon)">Pan</a></li> <li><a href="/wiki/Daphnis_(moon)" title="Daphnis (moon)">Daphnis</a></li> <li><a href="/wiki/Prometheus_(moon)" title="Prometheus (moon)">Prometheus</a></li> <li><a href="/wiki/Epimetheus_(moon)" title="Epimetheus (moon)">Epimetheus</a></li> <li><a href="/wiki/Janus_(moon)" title="Janus (moon)">Janus</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Other inner moons</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Atlas_(moon)" title="Atlas (moon)">Atlas</a></li> <li><a href="/wiki/Pandora_(moon)" title="Pandora (moon)">Pandora</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Moons_of_Saturn#The_Alkyonides" title="Moons of Saturn">Alkyonides</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Methone_(moon)" title="Methone (moon)">Methone</a></li> <li><a href="/wiki/Anthe_(moon)" title="Anthe (moon)">Anthe</a></li> <li><a href="/wiki/Pallene_(moon)" title="Pallene (moon)">Pallene</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Large moons<br />(with <a href="/wiki/Co-orbital_configuration#Trojan_moons" title="Co-orbital configuration">trojans</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><b><a href="/wiki/Mimas" title="Mimas">Mimas</a></b></li> <li><b><a href="/wiki/Enceladus" title="Enceladus">Enceladus</a></b></li> <li><b><a href="/wiki/Tethys_(moon)" title="Tethys (moon)">Tethys</a></b> <ul><li><a href="/wiki/Telesto_(moon)" title="Telesto (moon)">Telesto</a></li> <li><a href="/wiki/Calypso_(moon)" title="Calypso (moon)">Calypso</a></li></ul></li> <li><b><a href="/wiki/Dione_(moon)" title="Dione (moon)">Dione</a></b> <ul><li><a href="/wiki/Helene_(moon)" title="Helene (moon)">Helene</a></li> <li><a href="/wiki/Polydeuces_(moon)" title="Polydeuces (moon)">Polydeuces</a></li></ul></li> <li><b><a class="mw-selflink selflink">Rhea</a></b></li> <li><b><a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a></b></li> <li><a href="/wiki/Hyperion_(moon)" title="Hyperion (moon)">Hyperion</a></li> <li><b><a href="/wiki/Iapetus_(moon)" title="Iapetus (moon)">Iapetus</a></b></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Inuit_group" title="Inuit group">Inuit group</a> (13)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Kiviuq subgroup</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/S/2019_S_1" title="S/2019 S 1">S/2019 S 1</a></li> <li><a href="/wiki/Kiviuq_(moon)" title="Kiviuq (moon)">Kiviuq</a></li> <li><a href="/wiki/S/2005_S_4" title="S/2005 S 4">S/2005 S 4</a></li> <li><a href="/wiki/S/2020_S_1" title="S/2020 S 1">S/2020 S 1</a></li> <li><a href="/wiki/Ijiraq_(moon)" title="Ijiraq (moon)">Ijiraq</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Paaliaq subgroup</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Paaliaq" title="Paaliaq">Paaliaq</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Siarnaq subgroup</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/S/2004_S_31" title="S/2004 S 31">S/2004 S 31</a></li> <li><a href="/wiki/Tarqeq" title="Tarqeq">Tarqeq</a></li> <li><a href="/wiki/S/2019_S_14" title="S/2019 S 14">S/2019 S 14</a></li> <li><i><b><a href="/wiki/Siarnaq" title="Siarnaq">Siarnaq</a></b></i></li> <li><a href="/wiki/S/2020_S_3" title="S/2020 S 3">S/2020 S 3</a></li> <li><a href="/wiki/S/2019_S_6" title="S/2019 S 6">S/2019 S 6</a></li> <li><a href="/wiki/S/2020_S_5" title="S/2020 S 5">S/2020 S 5</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Gallic_group" title="Gallic group">Gallic group</a> (7)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><b><a href="/wiki/Albiorix_(moon)" title="Albiorix (moon)">Albiorix</a></b></i></li> <li><a href="/wiki/Bebhionn_(moon)" title="Bebhionn (moon)">Bebhionn</a></li> <li><a href="/wiki/S/2007_S_8" title="S/2007 S 8">S/2007 S 8</a></li> <li><a href="/wiki/Saturn_LX" title="Saturn LX">Saturn LX</a></li> <li><a href="/wiki/Erriapus" title="Erriapus">Erriapus</a></li> <li><a href="/wiki/Tarvos_(moon)" title="Tarvos (moon)">Tarvos</a></li> <li><a href="/wiki/S/2020_S_4" title="S/2020 S 4">S/2020 S 4</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Norse_group" title="Norse group">Norse group</a> (100)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Phoebe_subgroup" scope="row" class="navbox-group" style="width:1%">Phoebe subgroup</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><b><a href="/wiki/Phoebe_(moon)" title="Phoebe (moon)">Phoebe</a></b></i></li> <li><a href="/wiki/S/2006_S_20" title="S/2006 S 20">S/2006 S 20</a></li> <li><a href="/wiki/S/2006_S_9" title="S/2006 S 9">S/2006 S 9</a></li></ul> </div></td></tr></tbody></table><div> <ul><li><a href="/wiki/Skathi_(moon)" title="Skathi (moon)">Skathi</a></li> <li><a href="/wiki/S/2007_S_5" title="S/2007 S 5">S/2007 S 5</a></li> <li>S/2007 S 7</li> <li><a href="/wiki/S/2007_S_2" title="S/2007 S 2">S/2007 S 2</a></li> <li><a href="/wiki/S/2004_S_37" title="S/2004 S 37">S/2004 S 37</a></li> <li>S/2004 S 47</li> <li>S/2004 S 40</li> <li><a href="/wiki/S/2019_S_2" title="S/2019 S 2">S/2019 S 2</a></li> <li>S/2019 S 3</li> <li><a href="/wiki/S/2020_S_7" title="S/2020 S 7">S/2020 S 7</a></li> <li><a href="/wiki/Skoll_(moon)" title="Skoll (moon)">Skoll</a></li> <li>S/2020 S 2</li> <li>S/2019 S 4</li> <li>S/2004 S 41</li> <li>S/2004 S 42</li> <li><a href="/wiki/Hyrrokkin_(moon)" title="Hyrrokkin (moon)">Hyrrokkin</a></li> <li><a href="/wiki/Greip_(moon)" title="Greip (moon)">Greip</a></li> <li><a href="/wiki/S/2004_S_13" title="S/2004 S 13">S/2004 S 13</a></li> <li>S/2007 S 6</li> <li><a href="/wiki/Mundilfari_(moon)" title="Mundilfari (moon)">Mundilfari</a></li> <li><a href="/wiki/S/2006_S_1" title="S/2006 S 1">S/2006 S 1</a></li> <li><a href="/wiki/S/2004_S_43" title="S/2004 S 43">S/2004 S 43</a></li> <li>S/2006 S 10</li> <li>S/2019 S 5</li> <li><a href="/wiki/Gridr_(moon)" title="Gridr (moon)">Gridr</a></li> <li><a href="/wiki/Bergelmir_(moon)" title="Bergelmir (moon)">Bergelmir</a></li> <li><a href="/wiki/Jarnsaxa_(moon)" title="Jarnsaxa (moon)">Jarnsaxa</a></li> <li><a href="/wiki/Narvi_(moon)" title="Narvi (moon)">Narvi</a></li> <li><a href="/wiki/Suttungr_(moon)" title="Suttungr (moon)">Suttungr</a></li> <li>S/2004 S 44</li> <li><a href="/wiki/S/2007_S_3" title="S/2007 S 3">S/2007 S 3</a></li> <li>S/2004 S 45</li> <li><a href="/wiki/Hati_(moon)" title="Hati (moon)">Hati</a></li> <li><a href="/wiki/S/2004_S_17" title="S/2004 S 17">S/2004 S 17</a></li> <li>S/2006 S 11</li> <li><a href="/wiki/S/2004_S_12" title="S/2004 S 12">S/2004 S 12</a></li> <li><a href="/wiki/Eggther_(moon)" title="Eggther (moon)">Eggther</a></li> <li>S/2006 S 13</li> <li>S/2007 S 9</li> <li>S/2019 S 7</li> <li>S/2019 S 8</li> <li><a href="/wiki/Farbauti_(moon)" title="Farbauti (moon)">Farbauti</a></li> <li><a href="/wiki/Thrymr_(moon)" title="Thrymr (moon)">Thrymr</a></li> <li><a href="/wiki/Bestla_(moon)" title="Bestla (moon)">Bestla</a></li> <li>S/2019 S 9</li> <li><a href="/wiki/S/2004_S_46" title="S/2004 S 46">S/2004 S 46</a></li> <li><a href="/wiki/Angrboda_(moon)" title="Angrboda (moon)">Angrboda</a></li> <li><a href="/wiki/S/2019_S_11" title="S/2019 S 11">S/2019 S 11</a></li> <li><a href="/wiki/Aegir_(moon)" title="Aegir (moon)">Aegir</a></li> <li>S/2019 S 10</li> <li><a href="/wiki/Beli_(moon)" title="Beli (moon)">Beli</a></li> <li>S/2019 S 12</li> <li><a href="/wiki/Gerd_(moon)" title="Gerd (moon)">Gerd</a></li> <li><a href="/wiki/S/2019_S_13" title="S/2019 S 13">S/2019 S 13</a></li> <li><a href="/wiki/S/2006_S_14" title="S/2006 S 14">S/2006 S 14</a></li> <li><a href="/wiki/Gunnlod_(moon)" title="Gunnlod (moon)">Gunnlod</a></li> <li>S/2019 S 15</li> <li>S/2020 S 6</li> <li><a href="/wiki/S/2004_S_7" title="S/2004 S 7">S/2004 S 7</a></li> <li><a href="/wiki/S/2006_S_3" title="S/2006 S 3">S/2006 S 3</a></li> <li><a href="/wiki/S/2005_S_5" title="S/2005 S 5">S/2005 S 5</a></li> <li><a href="/wiki/Skrymir_(moon)" title="Skrymir (moon)">Skrymir</a></li> <li>S/2006 S 16</li> <li>S/2006 S 15</li> <li><a href="/wiki/S/2004_S_28" title="S/2004 S 28">S/2004 S 28</a></li> <li>S/2020 S 8</li> <li><a href="/wiki/Alvaldi_(moon)" title="Alvaldi (moon)">Alvaldi</a></li> <li><a href="/wiki/Kari_(moon)" title="Kari (moon)">Kari</a></li> <li>S/2004 S 48</li> <li><a href="/wiki/Geirrod_(moon)" title="Geirrod (moon)">Geirrod</a></li> <li><a href="/wiki/Fenrir_(moon)" title="Fenrir (moon)">Fenrir</a></li> <li>S/2004 S 50</li> <li>S/2006 S 17</li> <li>S/2004 S 49</li> <li>S/2019 S 17</li> <li><a href="/wiki/Surtur_(moon)" title="Surtur (moon)">Surtur</a></li> <li><a href="/wiki/S/2006_S_18" title="S/2006 S 18">S/2006 S 18</a></li> <li><a href="/wiki/Loge_(moon)" title="Loge (moon)">Loge</a></li> <li><a href="/wiki/Ymir_(moon)" title="Ymir (moon)">Ymir</a></li> <li><a href="/wiki/S/2019_S_19" title="S/2019 S 19">S/2019 S 19</a></li> <li>S/2019 S 18</li> <li><a href="/wiki/S/2004_S_21" title="S/2004 S 21">S/2004 S 21</a></li> <li><a href="/wiki/S/2004_S_39" title="S/2004 S 39">S/2004 S 39</a></li> <li>S/2019 S 16</li> <li>S/2004 S 53</li> <li><a href="/wiki/S/2004_S_36" title="S/2004 S 36">S/2004 S 36</a></li> <li><a href="/wiki/Thiazzi_(moon)" title="Thiazzi (moon)">Thiazzi</a></li> <li>S/2019 S 20</li> <li><a href="/wiki/S/2006_S_19" title="S/2006 S 19">S/2006 S 19</a></li> <li><a href="/wiki/Saturn_LXIV" title="Saturn LXIV">Saturn LXIV</a></li> <li><a href="/wiki/Fornjot_(moon)" title="Fornjot (moon)">Fornjot</a></li> <li>S/2004 S 51</li> <li>S/2020 S 10</li> <li><a href="/wiki/S/2020_S_9" title="S/2020 S 9">S/2020 S 9</a></li> <li><a href="/wiki/Saturn_LVIII" title="Saturn LVIII">Saturn LVIII</a></li> <li><a href="/wiki/S/2019_S_21" title="S/2019 S 21">S/2019 S 21</a></li> <li><a href="/wiki/S/2004_S_52" title="S/2004 S 52">S/2004 S 52</a></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Outlier prograde<br />irregular moons</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <li><a href="/wiki/S/2006_S_12" title="S/2006 S 12">S/2006 S 12</a></li> <li><a href="/wiki/S/2004_S_24" title="S/2004 S 24">S/2004 S 24</a></li> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div> <ul><li><a href="/wiki/Rings_of_Saturn" title="Rings of Saturn">Rings of Saturn</a></li> <li><a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens">Cassini–Huygens</a></li> <li><a href="/wiki/Chiron_(hypothetical_moon)" title="Chiron (hypothetical moon)">Chiron</a></li> <li><a href="/wiki/Chrysalis_(hypothetical_moon)" title="Chrysalis (hypothetical moon)">Chrysalis</a></li> <li><a href="/wiki/Themis_(hypothetical_moon)" title="Themis (hypothetical moon)">Themis</a></li> <li><a href="/wiki/S/2004_S_3" title="S/2004 S 3">S/2004 S 3</a></li> <li><a href="/wiki/S/2004_S_4" title="S/2004 S 4">S/2004 S 4</a></li> <li><a href="/wiki/S/2004_S_6" title="S/2004 S 6">S/2004 S 6</a></li> <li><a href="/wiki/Saturn_in_fiction#Moons" title="Saturn in fiction">In fiction</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Natural_satellites_of_the_Solar_System" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3" style="text-align: center;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Solar_System_moons_(compact)" title="Template:Solar System moons (compact)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Solar_System_moons_(compact)" title="Template talk:Solar System moons (compact)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Solar_System_moons_(compact)" title="Special:EditPage/Template:Solar System moons (compact)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Natural_satellites_of_the_Solar_System" style="font-size:114%;margin:0 4em"><a href="/wiki/Natural_satellite" title="Natural satellite">Natural satellites</a> of the <a href="/wiki/Solar_System" title="Solar System">Solar System</a></div></th></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/List_of_natural_satellites" title="List of natural satellites">Planetary<br />satellites</a> of</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Moon" title="Moon">Earth</a></li> <li><a href="/wiki/Moons_of_Mars" title="Moons of Mars">Mars</a></li> <li><a href="/wiki/Moons_of_Jupiter" title="Moons of Jupiter">Jupiter</a></li> <li><a href="/wiki/Moons_of_Saturn" title="Moons of Saturn">Saturn</a></li> <li><a href="/wiki/Moons_of_Uranus" title="Moons of Uranus">Uranus</a></li> <li><a href="/wiki/Moons_of_Neptune" title="Moons of Neptune">Neptune</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Jupiter_family.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Jupiter_family.jpg/150px-Jupiter_family.jpg" decoding="async" width="150" height="119" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Jupiter_family.jpg/225px-Jupiter_family.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Jupiter_family.jpg/300px-Jupiter_family.jpg 2x" data-file-width="2081" data-file-height="1654" /></a></span><br /><span typeof="mw:File"><a href="/wiki/File:PIA19856-PlutoCharon-NewHorizons-Color-20150714.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/PIA19856-PlutoCharon-NewHorizons-Color-20150714.jpg/150px-PIA19856-PlutoCharon-NewHorizons-Color-20150714.jpg" decoding="async" width="150" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/PIA19856-PlutoCharon-NewHorizons-Color-20150714.jpg/225px-PIA19856-PlutoCharon-NewHorizons-Color-20150714.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/PIA19856-PlutoCharon-NewHorizons-Color-20150714.jpg/300px-PIA19856-PlutoCharon-NewHorizons-Color-20150714.jpg 2x" data-file-width="2526" data-file-height="501" /></a></span><br /><span typeof="mw:File"><a href="/wiki/File:243_ida_crop.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/89/243_ida_crop.jpg/150px-243_ida_crop.jpg" decoding="async" width="150" height="97" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/89/243_ida_crop.jpg/225px-243_ida_crop.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/89/243_ida_crop.jpg/300px-243_ida_crop.jpg 2x" data-file-width="618" data-file-height="399" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/List_of_natural_satellites" title="List of natural satellites">Dwarf planet<br />satellites</a> of</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Vanth_(moon)" title="Vanth (moon)">Orcus</a></li> <li><a href="/wiki/Moons_of_Pluto" title="Moons of Pluto">Pluto</a></li> <li><a href="/wiki/Moons_of_Haumea" title="Moons of Haumea">Haumea</a></li> <li><a href="/wiki/Weywot" title="Weywot">Quaoar</a></li> <li><a href="/wiki/S/2015_(136472)_1" title="S/2015 (136472) 1">Makemake</a></li> <li><a href="/wiki/Xiangliu_(moon)" title="Xiangliu (moon)">Gonggong</a></li> <li><a href="/wiki/Dysnomia_(moon)" title="Dysnomia (moon)">Eris</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Minor-planet_moon" title="Minor-planet moon">Minor-planet<br />moons</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <dl><dt>Near-Earth</dt> <dd><a href="/wiki/3122_Florence" title="3122 Florence">Florence</a></dd> <dd><a href="/wiki/65803_Didymos" title="65803 Didymos">Didymos</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a></span></dd></dl></dd> <dd><a href="/wiki/66391_Moshup" title="66391 Moshup">Moshup</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/66391_Moshup#Satellite" title="66391 Moshup">Squannit</a></span></dd></dl></dd> <dd><span class="nowrap"><a href="/wiki/(136617)_1994_CC" title="(136617) 1994 CC">1994 CC</a></span></dd> <dd><span class="nowrap"><a href="/wiki/(153591)_2001_SN263" title="(153591) 2001 SN263">2001 SN<sub>263</sub></a></span></dd></dl> <dl><dt>Main belt</dt> <dd><a href="/wiki/22_Kalliope" title="22 Kalliope">Kalliope</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Linus_(moon)" title="Linus (moon)">Linus</a></span></dd></dl></dd> <dd><a href="/wiki/31_Euphrosyne" title="31 Euphrosyne">Euphrosyne</a></dd> <dd><a href="/wiki/41_Daphne" title="41 Daphne">Daphne</a> <dl><dd><span style="font-size:85%;">Peneius</span></dd></dl></dd> <dd><a href="/wiki/45_Eugenia" title="45 Eugenia">Eugenia</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Petit-Prince_(moon)" title="Petit-Prince (moon)">Petit-Prince</a></span></dd></dl></dd> <dd><a href="/wiki/87_Sylvia" title="87 Sylvia">Sylvia</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Romulus_(moon)" title="Romulus (moon)">Romulus</a></span></dd> <dd><span style="font-size:85%;"><a href="/wiki/Remus_(moon)" title="Remus (moon)">Remus</a></span></dd></dl></dd> <dd><a href="/wiki/93_Minerva" title="93 Minerva">Minerva</a> <dl><dd><span style="font-size:85%;">Aegis</span></dd> <dd><span style="font-size:85%;">Gorgoneion</span></dd></dl></dd> <dd><a href="/wiki/107_Camilla" title="107 Camilla">Camilla</a></dd> <dd><a href="/wiki/130_Elektra" title="130 Elektra">Elektra</a></dd> <dd><a href="/wiki/216_Kleopatra" title="216 Kleopatra">Kleopatra</a> <dl><dd><span style="font-size:85%;">Alexhelios</span></dd> <dd><span style="font-size:85%;">Cleoselene</span></dd></dl></dd> <dd><a href="/wiki/243_Ida" title="243 Ida">Ida</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Dactyl_(moon)" title="Dactyl (moon)">Dactyl</a></span></dd></dl></dd> <dd><a href="/wiki/317_Roxane" title="317 Roxane">Roxane</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Olympias_(moon)" class="mw-redirect" title="Olympias (moon)">Olympias</a></span></dd></dl></dd> <dd><a href="/wiki/762_Pulcova" title="762 Pulcova">Pulcova</a></dd> <dd><a href="/wiki/3749_Balam" title="3749 Balam">Balam</a></dd> <dd><a href="/wiki/152830_Dinkinesh" title="152830 Dinkinesh">Dinkinesh</a> (Selam)</dd></dl> <dl><dt>Jupiter trojans</dt> <dd><a href="/wiki/617_Patroclus" title="617 Patroclus">Patroclus</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Menoetius_(moon)" class="mw-redirect" title="Menoetius (moon)">Menoetius</a></span></dd></dl></dd> <dd><a href="/wiki/624_Hektor" title="624 Hektor">Hektor</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Skamandrios_(moon)" class="mw-redirect" title="Skamandrios (moon)">Skamandrios</a></span></dd></dl></dd> <dd><a href="/wiki/3548_Eurybates" title="3548 Eurybates">Eurybates</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Queta_(moon)" class="mw-redirect" title="Queta (moon)">Queta</a></span></dd></dl></dd></dl> <dl><dt>TNOs</dt> <dd><a href="/wiki/47171_Lempo" title="47171 Lempo">Lempo</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/47171_Lempo#Hiisi" title="47171 Lempo">Hiisi</a></span></dd> <dd><span style="font-size:85%;"><a href="/wiki/47171_Lempo#Paha" title="47171 Lempo">Paha</a></span></dd></dl></dd> <dd><span class="nowrap"><a href="/wiki/(55637)_2002_UX25" title="(55637) 2002 UX25">2002 UX<sub>25</sub></a></span></dd> <dd><a href="/wiki/79360_Sila%E2%80%93Nunam" title="79360 Sila–Nunam">Sila–Nunam</a></dd> <dd><a href="/wiki/120347_Salacia" title="120347 Salacia">Salacia</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Actaea_(moon)" title="Actaea (moon)">Actaea</a></span></dd></dl></dd> <dd><a href="/wiki/174567_Varda" title="174567 Varda">Varda</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/Ilmar%C3%AB" title="Ilmarë">Ilmarë</a></span></dd></dl></dd> <dd><a href="/wiki/229762_G%C7%83k%C3%BAn%C7%81%CA%BCh%C3%B2md%C3%ADm%C3%A0" title="229762 Gǃkúnǁʼhòmdímà">Gǃkúnǁʼhòmdímà</a> <dl><dd><span style="font-size:85%;"><a href="/wiki/G%C7%83%C3%B2%CA%BC%C3%A9_%C7%83H%C3%BA" class="mw-redirect" title="Gǃòʼé ǃHú">Gǃòʼé ǃHú</a></span></dd></dl></dd> <dd><span class="nowrap"><a href="/wiki/(532037)_2013_FY27" title="(532037) 2013 FY27">2013 FY<sub>27</sub></a></span></dd></dl> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Ranked<br />by size</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ganymede_(moon)" title="Ganymede (moon)">Ganymede</a> <ul><li><small><b>largest</b>: 5268 km / 0.413 Earths</small></li></ul></li> <li><a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a></li> <li><a href="/wiki/Callisto_(moon)" title="Callisto (moon)">Callisto</a></li> <li><a href="/wiki/Io_(moon)" title="Io (moon)">Io</a></li> <li><a href="/wiki/Moon" title="Moon">Moon</a></li> <li><a href="/wiki/Europa_(moon)" title="Europa (moon)">Europa</a></li> <li><a href="/wiki/Triton_(moon)" title="Triton (moon)">Triton</a></li> <li><a href="/wiki/Titania_(moon)" title="Titania (moon)">Titania</a></li> <li><a class="mw-selflink selflink">Rhea</a></li> <li><a href="/wiki/Oberon_(moon)" title="Oberon (moon)">Oberon</a></li> <li><a href="/wiki/Iapetus_(moon)" title="Iapetus (moon)">Iapetus</a></li> <li><a href="/wiki/Charon_(moon)" title="Charon (moon)">Charon</a></li> <li><a href="/wiki/Umbriel" title="Umbriel">Umbriel</a></li> <li><a href="/wiki/Ariel_(moon)" title="Ariel (moon)">Ariel</a></li> <li><a href="/wiki/Dione_(moon)" title="Dione (moon)">Dione</a></li> <li><a href="/wiki/Tethys_(moon)" title="Tethys (moon)">Tethys</a></li> <li><a href="/wiki/Dysnomia_(moon)" title="Dysnomia (moon)">Dysnomia</a></li> <li><a href="/wiki/Enceladus" title="Enceladus">Enceladus</a></li> <li><a href="/wiki/Miranda_(moon)" title="Miranda (moon)">Miranda</a></li> <li><a href="/wiki/Vanth_(moon)" title="Vanth (moon)">Vanth</a></li> <li><a href="/wiki/Proteus_(moon)" title="Proteus (moon)">Proteus</a></li> <li><a href="/wiki/Mimas" title="Mimas">Mimas</a></li> <li><a href="/wiki/Ilmar%C3%AB" title="Ilmarë">Ilmarë</a></li> <li><a href="/wiki/Nereid_(moon)" title="Nereid (moon)">Nereid</a></li> <li><a href="/wiki/Hi%CA%BBiaka_(moon)" title="Hiʻiaka (moon)">Hiʻiaka</a></li> <li><a href="/wiki/Actaea_(moon)" title="Actaea (moon)">Actaea</a></li> <li><a href="/wiki/Hyperion_(moon)" title="Hyperion (moon)">Hyperion</a></li> <li><a href="/wiki/Phoebe_(moon)" title="Phoebe (moon)">Phoebe</a></li> <li>...</li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="3" style="text-align: center;"><div> <ul><li><a href="/wiki/Timeline_of_discovery_of_Solar_System_planets_and_their_moons" title="Timeline of discovery of Solar System planets and their moons">Discovery timeline</a></li> <li><a href="/wiki/Inner_moon" title="Inner moon">Inner moons</a></li> <li><a href="/wiki/Irregular_moon" title="Irregular moon">Irregular moons</a></li> <li><a href="/wiki/List_of_natural_satellites" title="List of natural satellites">List</a></li> <li><a href="/wiki/Planetary-mass_moon" title="Planetary-mass moon">Planetary-mass moons</a></li> <li><a href="/wiki/Naming_of_moons" title="Naming of moons">Naming</a></li> <li><a href="/wiki/Subsatellite" title="Subsatellite">Subsatellite</a></li> <li><a href="/wiki/Regular_moon" title="Regular moon">Regular moons</a></li> <li><a href="/wiki/Co-orbital_configuration#Trojan_moons" title="Co-orbital configuration">Trojan moons</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Saturn" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Saturn" title="Template:Saturn"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Saturn" title="Template talk:Saturn"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Saturn" title="Special:EditPage/Template:Saturn"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Saturn" style="font-size:114%;margin:0 4em"><a href="/wiki/Saturn" title="Saturn">Saturn</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><a href="/wiki/Outline_of_Saturn" title="Outline of Saturn">Outline</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Geography</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dragon_Storm_(astronomy)" title="Dragon Storm (astronomy)">Dragon Storm</a></li> <li><a href="/wiki/Great_White_Spot" title="Great White Spot">Great White Spot</a></li> <li><a href="/wiki/Saturn%27s_hexagon" title="Saturn's hexagon">Hexagon</a></li> <li><a href="/wiki/Magnetosphere_of_Saturn" title="Magnetosphere of Saturn">Magnetosphere</a></li> <li><a href="/wiki/Rings_of_Saturn" title="Rings of Saturn">Rings</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Moons_of_Saturn" title="Moons of Saturn">Moons</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><small><a href="/wiki/S/2009_S_1" title="S/2009 S 1">S/2009 S 1</a></small></li> <li><a href="/wiki/Moons_of_Saturn#Ring_moonlets" title="Moons of Saturn">Ring moonlets</a></li> <li><a href="/wiki/Pan_(moon)" title="Pan (moon)">Pan</a></li> <li><a href="/wiki/Daphnis_(moon)" title="Daphnis (moon)">Daphnis</a></li> <li><a href="/wiki/Atlas_(moon)" title="Atlas (moon)">Atlas</a></li> <li><a href="/wiki/Prometheus_(moon)" title="Prometheus (moon)">Prometheus</a></li> <li><a href="/wiki/Pandora_(moon)" title="Pandora (moon)">Pandora</a></li> <li><a href="/wiki/Epimetheus_(moon)" title="Epimetheus (moon)">Epimetheus</a></li> <li><a href="/wiki/Janus_(moon)" title="Janus (moon)">Janus</a></li> <li><a href="/wiki/Aegaeon_(moon)" title="Aegaeon (moon)">Aegaeon</a></li> <li><b><a href="/wiki/Mimas_(moon)" class="mw-redirect" title="Mimas (moon)">Mimas</a></b></li> <li><a href="/wiki/Methone_(moon)" title="Methone (moon)">Methone</a></li> <li><a href="/wiki/Anthe_(moon)" title="Anthe (moon)">Anthe</a></li> <li><a href="/wiki/Pallene_(moon)" title="Pallene (moon)">Pallene</a></li> <li><b><a href="/wiki/Enceladus" title="Enceladus">Enceladus</a></b></li> <li><b><a href="/wiki/Tethys_(moon)" title="Tethys (moon)">Tethys</a></b> <ul><li><a href="/wiki/Telesto_(moon)" title="Telesto (moon)">Telesto</a></li> <li><a href="/wiki/Calypso_(moon)" title="Calypso (moon)">Calypso</a></li></ul></li> <li><b><a href="/wiki/Dione_(moon)" title="Dione (moon)">Dione</a></b> <ul><li><a href="/wiki/Helene_(moon)" title="Helene (moon)">Helene</a></li> <li><a href="/wiki/Polydeuces_(moon)" title="Polydeuces (moon)">Polydeuces</a></li></ul></li> <li><b><a class="mw-selflink selflink">Rhea</a></b></li> <li><b><a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a></b></li> <li><a href="/wiki/Hyperion_(moon)" title="Hyperion (moon)">Hyperion</a></li> <li><b><a href="/wiki/Iapetus_(moon)" title="Iapetus (moon)">Iapetus</a></b></li> <li><a href="/wiki/Inuit_group" title="Inuit group">Inuit group</a> <ul><li><a href="/wiki/Kiviuq_(moon)" title="Kiviuq (moon)">Kiviuq</a></li> <li><a href="/wiki/Paaliaq" title="Paaliaq">Paaliaq</a></li> <li><a href="/wiki/Siarnaq" title="Siarnaq">Siarnaq</a></li></ul></li> <li><a href="/wiki/Gallic_group" title="Gallic group">Gallic group</a> <ul><li><a href="/wiki/Albiorix_(moon)" title="Albiorix (moon)">Albiorix</a></li></ul></li> <li><a href="/wiki/Norse_group" title="Norse group">Norse group</a> <ul><li><a href="/wiki/Phoebe_(moon)" title="Phoebe (moon)">Phoebe</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Astronomy</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Delta_Octantis" title="Delta Octantis">Delta Octantis</a></li> <li><a href="/wiki/List_of_Saturn-crossing_minor_planets" title="List of Saturn-crossing minor planets">Saturn-crossing minor planets</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Exploration_of_Saturn" title="Exploration of Saturn">Exploration</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens">Cassini–Huygens</a></i> (<i><a href="/wiki/Huygens_(spacecraft)" title="Huygens (spacecraft)">Huygens</a></i>) <ul><li><span style="font-size:85%;"><a href="/wiki/Timeline_of_Cassini%E2%80%93Huygens" title="Timeline of Cassini–Huygens">timeline</a></span></li> <li><span style="font-size:85%;"><a href="/wiki/Cassini_retirement" title="Cassini retirement">retirement</a></span></li></ul></li> <li><i><a href="/wiki/Pioneer_11" title="Pioneer 11">Pioneer 11</a></i></li> <li><a href="/wiki/Voyager_program" title="Voyager program">Voyager program</a> <ul><li><i><a href="/wiki/Voyager_1" title="Voyager 1">Voyager 1</a></i></li> <li><i><a href="/wiki/Voyager_2" title="Voyager 2">Voyager 2</a></i></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Saturn_in_fiction" title="Saturn in fiction">Fiction</a></li> <li><i><a href="/wiki/The_Day_the_Earth_Smiled" title="The Day the Earth Smiled">The Day the Earth Smiled</a></i></li> <li><a href="/wiki/In_Saturn%27s_Rings" title="In Saturn's Rings"><i>In Saturn's Rings</i> (2018 documentary)</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Saturn" title="Category:Saturn">Category</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Atmospheres" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3" style="text-align: center;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Atmospheres" title="Template:Atmospheres"><abbr title="View this 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href="/wiki/File:Chaotic_Clouds_of_Jupiter.jpg" class="mw-file-description" title="The violent storms of Jupiter's atmosphere"><img alt="The violent storms of Jupiter's atmosphere" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Chaotic_Clouds_of_Jupiter.jpg/150px-Chaotic_Clouds_of_Jupiter.jpg" decoding="async" width="150" height="150" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Chaotic_Clouds_of_Jupiter.jpg/225px-Chaotic_Clouds_of_Jupiter.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Chaotic_Clouds_of_Jupiter.jpg/300px-Chaotic_Clouds_of_Jupiter.jpg 2x" data-file-width="1080" data-file-height="1080" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Planet" title="Planet">Planets</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Atmosphere_of_Mercury" title="Atmosphere of Mercury">Mercury</a></li> <li><b><a href="/wiki/Atmosphere_of_Venus" title="Atmosphere of Venus">Venus</a></b></li> <li><b><a href="/wiki/Atmosphere_of_Earth" title="Atmosphere of Earth">Earth</a></b></li> <li><b><a href="/wiki/Atmosphere_of_Mars" title="Atmosphere of Mars">Mars</a></b></li> <li><b><a href="/wiki/Atmosphere_of_Jupiter" title="Atmosphere of Jupiter">Jupiter</a></b></li> <li><b><a href="/wiki/Saturn#Atmosphere" title="Saturn">Saturn</a></b></li> <li><b><a href="/wiki/Atmosphere_of_Uranus" title="Atmosphere of Uranus">Uranus</a></b></li> <li><b><a href="/wiki/Neptune#Atmosphere" title="Neptune">Neptune</a></b></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Dwarf_planet" title="Dwarf planet">Dwarf planets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ceres_(dwarf_planet)#Atmosphere" title="Ceres (dwarf planet)">Ceres</a></li> <li><b><a href="/wiki/Atmosphere_of_Pluto" title="Atmosphere of Pluto">Pluto</a></b></li> <li><i><a href="/wiki/Makemake#Atmosphere" title="Makemake">Makemake</a></i></li> <li><i><a href="/wiki/Eris_(dwarf_planet)#Surface_and_atmosphere" title="Eris (dwarf planet)">Eris</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Natural_satellite" title="Natural satellite">Natural satellites</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Atmosphere_of_the_Moon" title="Atmosphere of the Moon">Moon</a></li> <li><a href="/wiki/Atmosphere_of_Io" title="Atmosphere of Io">Io</a></li> <li><a href="/wiki/Europa_(moon)#Atmosphere" title="Europa (moon)">Europa</a></li> <li><a href="/wiki/Ganymede_(moon)#Atmosphere_and_ionosphere" title="Ganymede (moon)">Ganymede</a></li> <li><a href="/wiki/Callisto_(moon)#Atmosphere_and_ionosphere" title="Callisto (moon)">Callisto</a></li> <li><a href="/wiki/Enceladus#Atmosphere" title="Enceladus">Enceladus</a></li> <li><a href="/wiki/Dione_(moon)#Atmosphere" title="Dione (moon)">Dione</a></li> <li><a class="mw-selflink-fragment" href="#Atmosphere">Rhea</a></li> <li><b><a href="/wiki/Atmosphere_of_Titan" title="Atmosphere of Titan">Titan</a></b></li> <li><b><a href="/wiki/Atmosphere_of_Triton" title="Atmosphere of Triton">Triton</a></b></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Exoplanet" title="Exoplanet">Exoplanets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/GJ_1132_b#Atmosphere" title="GJ 1132 b">GJ 1132 b</a></i></li> <li><b><a href="/wiki/HD_209458_b#Stratosphere_and_upper_clouds" title="HD 209458 b">HD 209458 b</a></b></li> <li><b><a href="/wiki/Kepler-7b#Cloud_mapping" title="Kepler-7b">Kepler-7b</a></b></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Prebiotic_atmosphere" title="Prebiotic atmosphere">Prebiotic atmosphere</a></li> <li><a href="/wiki/Coma_(cometary)" class="mw-redirect" title="Coma (cometary)">Coma</a></li> <li><a href="/wiki/Extraterrestrial_atmosphere" title="Extraterrestrial atmosphere">Extraterrestrial atmosphere</a></li> <li><a href="/wiki/Stellar_atmosphere" title="Stellar atmosphere">Stellar atmosphere</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="3" style="text-align: center;"><div>Atmospheres in boldface are significant atmospheres; atmospheres in italics are unconfirmed atmospheres.</div></td></tr></tbody></table></div> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output .portal-bar-related{font-size:100%;justify-content:flex-start}.mw-parser-output .portal-bar-unbordered{padding:0 1.7em;margin-left:0}.mw-parser-output .portal-bar-header{margin:0 1em 0 0.5em;flex:0 0 auto;min-height:24px}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;flex:0 1 auto;padding:0.15em 0;column-gap:1em;align-items:baseline;margin:0;list-style:none}.mw-parser-output .portal-bar-content-related{margin:0;list-style:none}.mw-parser-output .portal-bar-item{display:inline-block;margin:0.15em 0.2em;min-height:24px;line-height:24px}@media screen and (max-width:768px){.mw-parser-output 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