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</a> <ul id="toc-Descrizione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Scoperta" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Scoperta"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Scoperta</span> </div> </a> <ul id="toc-Scoperta-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voci_correlate" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voci_correlate"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-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="Indice" 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="Mostra/Nascondi l'indice" > <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">Mostra/Nascondi l'indice</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">NGC 291</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="Vai a una voce in un'altra lingua. Disponibile in 33 lingue" > <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-33" 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">33 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/NGC_291" title="NGC 291 - arabo" lang="ar" hreflang="ar" data-title="NGC 291" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/NGC_291_(%D9%85%D8%AC%D8%B1%D9%87)" title="NGC 291 (مجره) - arabo egiziano" lang="arz" hreflang="arz" data-title="NGC 291 (مجره)" data-language-autonym="مصرى" data-language-local-name="arabo egiziano" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/NGC_291" title="NGC 291 - asturiano" lang="ast" hreflang="ast" data-title="NGC 291" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/NGC_291" title="NGC 291 - azerbaigiano" lang="az" hreflang="az" data-title="NGC 291" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/NGC_291" title="NGC 291 - bielorusso" lang="be" hreflang="be" data-title="NGC 291" data-language-autonym="Беларуская" data-language-local-name="bielorusso" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/NGC_291" title="NGC 291 - bosniaco" lang="bs" hreflang="bs" data-title="NGC 291" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/NGC_291" title="NGC 291 - ceceno" lang="ce" hreflang="ce" data-title="NGC 291" data-language-autonym="Нохчийн" data-language-local-name="ceceno" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/NGC_291" title="NGC 291 - tedesco" lang="de" hreflang="de" data-title="NGC 291" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/NGC_291" title="NGC 291 - Zazaki" lang="diq" hreflang="diq" data-title="NGC 291" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/NGC_291" title="NGC 291 - inglese" lang="en" hreflang="en" data-title="NGC 291" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/NGC_291" title="NGC 291 - esperanto" lang="eo" hreflang="eo" data-title="NGC 291" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/NGC_291" title="NGC 291 - spagnolo" lang="es" hreflang="es" data-title="NGC 291" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/NGC_291" title="NGC 291 - basco" lang="eu" hreflang="eu" data-title="NGC 291" data-language-autonym="Euskara" data-language-local-name="basco" 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%A7%D9%86%E2%80%8C%D8%AC%DB%8C%E2%80%8C%D8%B3%DB%8C_%DB%B2%DB%B9%DB%B1" title="ان‌جی‌سی ۲۹۱ - persiano" lang="fa" hreflang="fa" data-title="ان‌جی‌سی ۲۹۱" data-language-autonym="فارسی" data-language-local-name="persiano" 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/NGC_291" title="NGC 291 - francese" lang="fr" hreflang="fr" data-title="NGC 291" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/NGC_291" title="NGC 291 - croato" lang="hr" hreflang="hr" data-title="NGC 291" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/NGC_291" title="NGC 291 - kazako" lang="kk" hreflang="kk" data-title="NGC 291" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/NGC_291" title="NGC 291 - macedone" lang="mk" hreflang="mk" data-title="NGC 291" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/NGC_291" title="NGC 291 - birmano" lang="my" hreflang="my" data-title="NGC 291" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmano" 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/NGC_291" title="NGC 291 - olandese" lang="nl" hreflang="nl" data-title="NGC 291" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/NGC_291" title="NGC 291 - polacco" lang="pl" hreflang="pl" data-title="NGC 291" data-language-autonym="Polski" data-language-local-name="polacco" 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/NGC_291" title="NGC 291 - portoghese" lang="pt" hreflang="pt" data-title="NGC 291" data-language-autonym="Português" data-language-local-name="portoghese" 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/NGC_291" title="NGC 291 - rumeno" lang="ro" hreflang="ro" data-title="NGC 291" data-language-autonym="Română" data-language-local-name="rumeno" 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/NGC_291" title="NGC 291 - russo" lang="ru" hreflang="ru" data-title="NGC 291" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/NGC_291" title="NGC 291 - serbo-croato" lang="sh" hreflang="sh" data-title="NGC 291" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croato" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/NGC_291" title="NGC 291 - slovacco" lang="sk" hreflang="sk" data-title="NGC 291" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/NGC_291" title="NGC 291 - serbo" lang="sr" hreflang="sr" data-title="NGC 291" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/NGC_291" title="NGC 291 - turco" lang="tr" hreflang="tr" data-title="NGC 291" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/NGC_291" title="NGC 291 - tataro" lang="tt" hreflang="tt" data-title="NGC 291" data-language-autonym="Татарча / tatarça" data-language-local-name="tataro" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/NGC_291" title="NGC 291 - ucraino" lang="uk" hreflang="uk" data-title="NGC 291" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/NGC_291" title="NGC 291 - uzbeco" lang="uz" hreflang="uz" data-title="NGC 291" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbeco" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/NGC_291" title="NGC 291 - vietnamita" lang="vi" hreflang="vi" data-title="NGC 291" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/NGC_291" title="NGC 291 - cinese" lang="zh" hreflang="zh" data-title="NGC 291" data-language-autonym="中文" data-language-local-name="cinese" 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/Q1036031#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespace"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/NGC_291" title="Vedi la voce [c]" accesskey="c"><span>Voce</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discussione:NGC_291" rel="discussion" title="Vedi le discussioni relative a questa pagina [t]" accesskey="t"><span>Discussione</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Cambia versione linguistica" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">italiano</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Visite"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/NGC_291"><span>Leggi</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=NGC_291&veaction=edit" title="Modifica questa pagina [v]" accesskey="v"><span>Modifica</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=NGC_291&action=edit" title="Modifica il wikitesto di questa pagina [e]" accesskey="e"><span>Modifica wikitesto</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=NGC_291&action=history" title="Versioni precedenti di questa pagina [h]" accesskey="h"><span>Cronologia</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Strumenti pagine"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Strumenti" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Strumenti</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Strumenti</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">nascondi</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Altre opzioni" > <div class="vector-menu-heading"> Azioni </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/NGC_291"><span>Leggi</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=NGC_291&veaction=edit" title="Modifica questa pagina [v]" accesskey="v"><span>Modifica</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=NGC_291&action=edit" title="Modifica il wikitesto di questa pagina [e]" accesskey="e"><span>Modifica wikitesto</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=NGC_291&action=history"><span>Cronologia</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Generale </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Speciale:PuntanoQui/NGC_291" title="Elenco di tutte le pagine che sono collegate a questa [j]" accesskey="j"><span>Puntano qui</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Speciale:ModificheCorrelate/NGC_291" rel="nofollow" title="Elenco delle ultime modifiche alle pagine collegate a questa [k]" accesskey="k"><span>Modifiche correlate</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Speciale:PagineSpeciali" title="Elenco di tutte le pagine speciali [q]" accesskey="q"><span>Pagine speciali</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=NGC_291&oldid=138486397" title="Collegamento permanente a questa versione di questa pagina"><span>Link permanente</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=NGC_291&action=info" title="Ulteriori informazioni su questa pagina"><span>Informazioni pagina</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Speciale:Cita&page=NGC_291&id=138486397&wpFormIdentifier=titleform" title="Informazioni su come citare questa pagina"><span>Cita questa voce</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Speciale:UrlShortener&url=https%3A%2F%2Fit.wikipedia.org%2Fwiki%2FNGC_291"><span>Ottieni URL breve</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Speciale:QrCode&url=https%3A%2F%2Fit.wikipedia.org%2Fwiki%2FNGC_291"><span>Scarica codice QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Stampa/esporta </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Speciale:Libro&bookcmd=book_creator&referer=NGC+291"><span>Crea un libro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Speciale:DownloadAsPdf&page=NGC_291&action=show-download-screen"><span>Scarica come PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=NGC_291&printable=yes" title="Versione stampabile di questa pagina [p]" accesskey="p"><span>Versione stampabile</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In altri progetti </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:NGC_291" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1036031" title="Collegamento all'elemento connesso 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class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/30px-Jupiter_and_moon.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/40px-Jupiter_and_moon.png 2x" data-file-width="128" data-file-height="128" /></span></span> <a rel="nofollow" class="external text" href="http://www.wikisky.org/?ra=0.89163888888889&de=-8.7677777777778&zoom=6&show_grid=1&show_constellation_lines=1&show_constellation_boundaries=1&show_const_names=1&show_galaxies=1&img_source=IMG_all">00<sup>h</sup> 53<sup>m</sup> 29.9<sup>s</sup>, -08° 46′ 04″</a></span></div></div> </div> <div id="siteSub" class="noprint">Da Wikipedia, l'enciclopedia libera.</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="it" dir="ltr"><table class="infobox sinottico" summary="Tabella sinottica che riassume i principali dati del soggetto" style="width:300px"><tbody><tr class="sinottico_testata"><th colspan="2" style="background: #99CCCC; color: black">NGC 291<br /><span class="sinottico_sottotitolo"><a href="/wiki/Galassia_a_spirale_barrata" title="Galassia a spirale barrata">Galassia a spirale barrata</a></span></th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:NGC_0291_SDSS.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/NGC_0291_SDSS.jpg/280px-NGC_0291_SDSS.jpg" decoding="async" width="280" height="212" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/NGC_0291_SDSS.jpg/420px-NGC_0291_SDSS.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/05/NGC_0291_SDSS.jpg/560px-NGC_0291_SDSS.jpg 2x" data-file-width="982" data-file-height="745" /></a><figcaption></figcaption></figure>NGC 291 nelle immagini <a href="/wiki/Sloan_Digital_Sky_Survey" title="Sloan Digital Sky Survey">SDSS</a></td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #99CCCC; color: black">Scoperta</th></tr><tr><th style="width:45%">Scopritore</th><td><a href="/wiki/Albert_Marth" title="Albert Marth">Albert Marth</a> </td></tr><tr><th style="width:45%">Data</th><td>27 settembre 1864 <sup id="cite_ref-selig_1-0" class="reference"><a href="#cite_note-selig-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #99CCCC; color: black">Dati osservativi<br /><small>(<a href="/wiki/Epoca_(astronomia)" title="Epoca (astronomia)">epoca</a> <a href="/wiki/J2000" class="mw-redirect" title="J2000">J2000</a>)</small></th></tr><tr><th style="width:45%"><a href="/wiki/Costellazione" title="Costellazione">Costellazione</a></th><td><a href="/wiki/Balena_(costellazione)" title="Balena (costellazione)">Balena</a> </td></tr><tr><th style="width:45%"><a href="/wiki/Ascensione_retta" title="Ascensione retta">Ascensione retta</a></th><td>00<sup>h</sup> 53<sup>m</sup> 29.9<sup>s</sup> <sup id="cite_ref-ned_2-0" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Declinazione_(astronomia)" title="Declinazione (astronomia)">Declinazione</a></th><td>-08° 46′ 04″ <sup id="cite_ref-ned_2-1" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Distanza_astronomica" title="Distanza astronomica">Distanza</a></th><td>258,2 <a href="/wiki/Anno_luce" title="Anno luce">mega anni luce</a> (79,16 <a href="/wiki/Parsec" title="Parsec">Mpc</a>) <sup id="cite_ref-selig_1-1" class="reference"><a href="#cite_note-selig-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ned_2-2" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Anno_luce" title="Anno luce">a.l.</a>   </td></tr><tr><th style="width:45%"><a href="/wiki/Magnitudine_apparente" title="Magnitudine apparente">Magnitudine apparente</a> <small title="luce visibile">(V)</small></th><td>13,9 <sup id="cite_ref-spider_3-0" class="reference"><a href="#cite_note-spider-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> <br />nella banda B: 14,8 <sup id="cite_ref-spider_3-1" class="reference"><a href="#cite_note-spider-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-SIMBAD_4-0" class="reference"><a href="#cite_note-SIMBAD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Spostamento_verso_il_rosso" title="Spostamento verso il rosso">Redshift</a></th><td>+0,018976 ± 0,000010 <sup id="cite_ref-ned_2-3" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Luminosit%C3%A0_superficiale" title="Luminosità superficiale">Luminosità superficiale</a></th><td>13,45 <sup id="cite_ref-spider_3-2" class="reference"><a href="#cite_note-spider-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>, </td></tr><tr><th style="width:45%"><a href="/wiki/Angolo_di_posizione" title="Angolo di posizione">Angolo di posizione</a></th><td>45° <sup id="cite_ref-spider_3-3" class="reference"><a href="#cite_note-spider-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Velocit%C3%A0_radiale" title="Velocità radiale">Velocità radiale</a></th><td>5689 ± 3 <sup id="cite_ref-ned_2-4" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-SIMBAD_4-1" class="reference"><a href="#cite_note-SIMBAD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Chilometro_al_secondo" class="mw-redirect" title="Chilometro al secondo">km/s</a> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #99CCCC; color: black">Caratteristiche fisiche</th></tr><tr><th style="width:45%">Tipo</th><td><a href="/wiki/Galassia_a_spirale_barrata" title="Galassia a spirale barrata">Galassia a spirale barrata</a> </td></tr><tr><th style="width:45%">Classe</th><td>(R')SB(r)a? <sup id="cite_ref-ned_2-5" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>, Sa <sup id="cite_ref-spider_3-4" class="reference"><a href="#cite_note-spider-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>, (R)SB(r)a? <sup id="cite_ref-selig_1-2" class="reference"><a href="#cite_note-selig-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%">Dimensioni</th><td>100 600 <a href="/wiki/Anno_luce" title="Anno luce">al</a> (30 830 <a href="/wiki/Parsec" title="Parsec">pc</a>) <a href="/wiki/Anno_luce" title="Anno luce">a.l.</a> <sup id="cite_ref-ned_2-6" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-spider_3-5" class="reference"><a href="#cite_note-spider-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>   </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #99CCCC; color: black">Altre designazioni</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><a href="/wiki/Catalogue_of_Principal_Galaxies" class="mw-redirect" title="Catalogue of Principal Galaxies">PGC</a> 3140<br /> <a href="/wiki/Morphological_Catalogue_of_Galaxies" title="Morphological Catalogue of Galaxies">MCG</a> -02-02-35<br /> <a href="/wiki/Infrared_Astronomical_Satellite" class="mw-redirect" title="Infrared Astronomical Satellite">IRAS</a> 00510-0901 <sup id="cite_ref-ned_2-7" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-spider_3-6" class="reference"><a href="#cite_note-spider-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-SIMBAD_4-2" class="reference"><a href="#cite_note-SIMBAD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #99CCCC; color: black">Mappa di localizzazione</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><div style="position: relative; width: 260px; margin: auto; float: {{{allineamento}}}; clear: {{{allineamento}}};"><div style="position: absolute; left: 162px; top: 83px; padding: 0;"><span class="mw-valign-top" typeof="mw:File"><a href="/wiki/File:Cercle_rouge_100%25.svg" class="mw-file-description" title="NGC 291"><img alt="NGC 291" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Cercle_rouge_100%25.svg/15px-Cercle_rouge_100%25.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Cercle_rouge_100%25.svg/23px-Cercle_rouge_100%25.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Cercle_rouge_100%25.svg/30px-Cercle_rouge_100%25.svg.png 2x" data-file-width="200" data-file-height="200" /></a></span></div><span typeof="mw:File"><a href="/wiki/File:Cetus_IAU.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Cetus_IAU.svg/260px-Cetus_IAU.svg.png" decoding="async" width="260" height="227" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Cetus_IAU.svg/390px-Cetus_IAU.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Cetus_IAU.svg/520px-Cetus_IAU.svg.png 2x" data-file-width="599" data-file-height="522" /></a></span></div> </td></tr><tr><td colspan="2" class="sinottico_piede" style="background: #99CCCC; color: black"><a href="/wiki/Categoria:Galassie_a_spirale_barrata" title="Categoria:Galassie a spirale barrata">Categoria di galassie a spirale barrata</a> </td></tr></tbody></table><style data-mw-deduplicate="TemplateStyles:r139486644">body.skin-vector .mw-parser-output #coordinates{font-size:85%;line-height:1.5em;white-space:nowrap}</style> <p><b>NGC 291</b> è una <a href="/wiki/Galassia_a_spirale_barrata" title="Galassia a spirale barrata">galassia a spirale barrata</a> situata nella costellazione della <a href="/wiki/Balena_(costellazione)" title="Balena (costellazione)">Balena</a>.<sup id="cite_ref-selig_1-3" class="reference"><a href="#cite_note-selig-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ned_2-8" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Descrizione">Descrizione</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NGC_291&veaction=edit&section=1" title="Modifica la sezione Descrizione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=NGC_291&action=edit&section=1" title="Edit section's source code: Descrizione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La galassia ha una classe di luminosità I e presenta una larga <a href="/wiki/Riga_a_21_cm_dell%27idrogeno_neutro" title="Riga a 21 cm dell'idrogeno neutro">riga a 21 cm dell'idrogeno neutro</a>.<sup id="cite_ref-ned_2-9" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Sono inoltre presenti anche <a href="/wiki/Regione_H_II" title="Regione H II">regioni di idrogeno ionizzato</a>.<sup id="cite_ref-ned_2-10" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Viene inoltre classificata come <a href="/wiki/Galassia_di_Seyfert" title="Galassia di Seyfert">galassia di Seyfert</a> di tipo 2.<sup id="cite_ref-ned_2-11" class="reference"><a href="#cite_note-ned-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Scoperta">Scoperta</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NGC_291&veaction=edit&section=2" title="Modifica la sezione Scoperta" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=NGC_291&action=edit&section=2" title="Edit section's source code: Scoperta"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>NGC 291 è stata scoperta il 27 settembre 1864 dall'astronomo tedesco <a href="/wiki/Albert_Marth" title="Albert Marth">Albert Marth</a>.<sup id="cite_ref-selig_1-4" class="reference"><a href="#cite_note-selig-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NGC_291&veaction=edit&section=3" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=NGC_291&action=edit&section=3" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-selig-1"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-selig_1-0">a</a></i></sup> <sup><i><a href="#cite_ref-selig_1-1">b</a></i></sup> <sup><i><a href="#cite_ref-selig_1-2">c</a></i></sup> <sup><i><a href="#cite_ref-selig_1-3">d</a></i></sup> <sup><i><a href="#cite_ref-selig_1-4">e</a></i></sup></span> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Courtney Seligman, <a rel="nofollow" class="external text" href="http://cseligman.com/text/atlas/ngc2a.htm#291"><span style="font-style:italic;">Celestial Atlas Table of Contents, NGC 291</span></a>, su <span style="font-style:italic;">cseligman.com</span>. <small>URL consultato il 23 marzo 2024</small>.</cite></span> </li> <li id="cite_note-ned-2"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-ned_2-0">a</a></i></sup> <sup><i><a href="#cite_ref-ned_2-1">b</a></i></sup> <sup><i><a href="#cite_ref-ned_2-2">c</a></i></sup> <sup><i><a href="#cite_ref-ned_2-3">d</a></i></sup> <sup><i><a href="#cite_ref-ned_2-4">e</a></i></sup> <sup><i><a href="#cite_ref-ned_2-5">f</a></i></sup> <sup><i><a href="#cite_ref-ned_2-6">g</a></i></sup> <sup><i><a href="#cite_ref-ned_2-7">h</a></i></sup> <sup><i><a href="#cite_ref-ned_2-8">i</a></i></sup> <sup><i><a href="#cite_ref-ned_2-9">j</a></i></sup> <sup><i><a href="#cite_ref-ned_2-10">k</a></i></sup> <sup><i><a href="#cite_ref-ned_2-11">l</a></i></sup></span> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+291&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES"><span style="font-style:italic;">NED results for object NGC 0291</span></a>, su <span style="font-style:italic;">ned.ipac.caltech.edu</span>, <a href="/wiki/National_Aeronautics_and_Space_Administration" class="mw-redirect" title="National Aeronautics and Space Administration">National Aeronautics and Space Administration</a> / <a href="/wiki/Infrared_Processing_and_Analysis_Center" title="Infrared Processing and Analysis Center">Infrared Processing and Analysis Center</a>. <small>URL consultato il 23 marzo 2024</small>.</cite></span> </li> <li id="cite_note-spider-3"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-spider_3-0">a</a></i></sup> <sup><i><a href="#cite_ref-spider_3-1">b</a></i></sup> <sup><i><a href="#cite_ref-spider_3-2">c</a></i></sup> <sup><i><a href="#cite_ref-spider_3-3">d</a></i></sup> <sup><i><a href="#cite_ref-spider_3-4">e</a></i></sup> <sup><i><a href="#cite_ref-spider_3-5">f</a></i></sup> <sup><i><a href="#cite_ref-spider_3-6">g</a></i></sup></span> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="francese">FR</abbr></span>) <a rel="nofollow" class="external text" href="http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N0200_exc_web.htm"><span style="font-style:italic;">Les données de «Revised NGC and IC Catalog by Wolfgang Steinicke», NGC 200 à 299</span></a>, su <span style="font-style:italic;">astrovalleyfield.ca</span>. <small>URL consultato il 23 marzo 2024</small>.</cite></span> </li> <li id="cite_note-SIMBAD-4"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-SIMBAD_4-0">a</a></i></sup> <sup><i><a href="#cite_ref-SIMBAD_4-1">b</a></i></sup> <sup><i><a href="#cite_ref-SIMBAD_4-2">c</a></i></sup></span> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+291&submit=SIMBAD+search"><span style="font-style:italic;">SIMBAD Astronomical Database</span></a>, in <span style="font-style:italic;">Strasbourg astronomical Data Center</span>. <small>URL consultato il 23 marzo 2024</small>.</cite></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NGC_291&veaction=edit&section=4" title="Modifica la sezione Voci correlate" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=NGC_291&action=edit&section=4" title="Edit section's source code: Voci correlate"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Oggetti_non_stellari_nella_costellazione_della_Balena" title="Oggetti non stellari nella costellazione della Balena">Oggetti non stellari nella costellazione della Balena</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NGC_291&veaction=edit&section=5" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=NGC_291&action=edit&section=5" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><span class="plainlinks" title="commons:Category:NGC 291"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:NGC_291?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file su <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:NGC_291?uselang=it">NGC 291</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NGC_291&veaction=edit&section=6" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=NGC_291&action=edit&section=6" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite id="CITEREFNIOviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://www.ngcicproject.org/pubdb.htm"><span style="font-style:italic;">Catalogo NGC/IC on-line</span></a>, su <span style="font-style:italic;">ngcicproject.org</span>.</cite></li> <li><cite id="CITEREFSIMviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+291"><span style="font-style:italic;">Dati di NGC 291 - SIMBAD</span></a>, su <span style="font-style:italic;">simbad.u-strasbg.fr</span>.</cite> (dettagli <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+291#lab_ident">identificatori</a>, <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+291&submit=display+all+measurements#lab_meas">misure</a>)</li> <li><cite id="CITEREFNEDviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+291"><span style="font-style:italic;">Dati di NGC 291 - NASA Extragalactic Database</span></a>, su <span style="font-style:italic;">ned.ipac.caltech.edu</span>.</cite></li> <li><cite id="CITEREFSEDviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://spider.seds.org/ngc/revngcic.cgi?NGC291"><span style="font-style:italic;">Dati di NGC 291 - SEDS</span></a>, su <span style="font-style:italic;">spider.seds.org</span>.</cite></li> <li><cite id="CITEREFVRSviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://vizier.u-strasbg.fr/viz-bin/VizieR-S?NGC%20291"><span style="font-style:italic;">Dati di NGC 291 - VizieR Service</span></a>, su <span style="font-style:italic;">vizier.u-strasbg.fr</span>.</cite></li> <li><cite id="CITEREFALAviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://aladin.u-strasbg.fr/alapre.pl?NGC291"><span style="font-style:italic;">Immagini di NGC 291 - Aladin</span></a>, su <span style="font-style:italic;">aladin.u-strasbg.fr</span>.</cite></li> <li><cite id="CITEREFSKYviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://skyview.gsfc.nasa.gov/cgi-bin/nnskcall.pl?Interface=quick&VCOORD=NGC291&SURVEY=Digitized+Sky+Survey"><span style="font-style:italic;">Immagini di NGC 291 - SkyView</span></a>, su <span style="font-style:italic;">skyview.gsfc.nasa.gov</span>.</cite></li></ul> <style data-mw-deduplicate="TemplateStyles:r119428068">.mw-parser-output .navNGC{background-color:#CEDAF2;border:1px solid #003399;font-size:85%;margin-left:auto;margin-right:auto}.mw-parser-output .navNGC td:last-child{padding:0 6px}</style><table class="navNGC noprint"> <tbody><tr> <td><span typeof="mw:File"><a href="/wiki/File:Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg/22px-Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg" decoding="async" width="22" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg/33px-Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg/44px-Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg 2x" data-file-width="18000" data-file-height="18000" /></a></span></td> <td><b><a href="/wiki/New_General_Catalogue" title="New General Catalogue">New General Catalogue</a></b>:</td> <td><a href="/wiki/NGC_289" title="NGC 289">NGC 289</a>  •  <a href="/wiki/NGC_290" title="NGC 290">NGC 290</a>  •  <b>NGC 291</b>  •  <a href="/wiki/NGC_292" class="mw-redirect" title="NGC 292">NGC 292</a>  •  <a href="/wiki/NGC_293" title="NGC 293">NGC 293</a></td> </tr> </tbody></table> <div 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