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id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inizio</div> </a> </li> <li id="toc-Osservazione" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Osservazione"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Osservazione</span> </div> </a> <ul id="toc-Osservazione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sistema_stellare" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sistema_stellare"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Sistema stellare</span> </div> </a> <ul id="toc-Sistema_stellare-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Caratteristiche_fisiche" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Caratteristiche_fisiche"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Caratteristiche fisiche</span> </div> </a> <ul id="toc-Caratteristiche_fisiche-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ambiente_galattico" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ambiente_galattico"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Ambiente galattico</span> </div> </a> <ul id="toc-Ambiente_galattico-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">5</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliografia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliografia"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Bibliografia</span> </div> </a> <ul id="toc-Bibliografia-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">7</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-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">8</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">Tau Tauri</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 9 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-9" 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">9 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Tau_Tauri" title="Tau Tauri - asturiano" lang="ast" hreflang="ast" data-title="Tau Tauri" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Tau_Tauri" title="Tau Tauri - inglese" lang="en" hreflang="en" data-title="Tau Tauri" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Tau_Tauri" title="Tau Tauri - spagnolo" lang="es" hreflang="es" data-title="Tau Tauri" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AA%D8%A7%D9%88_%DA%AF%D8%A7%D9%88" title="تاو گاو - persiano" lang="fa" hreflang="fa" data-title="تاو گاو" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Tau_Tauri" title="Tau Tauri - finlandese" lang="fi" hreflang="fi" data-title="Tau Tauri" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%81%8A%E3%81%86%E3%81%97%E5%BA%A7%E3%82%BF%E3%82%A6%E6%98%9F" title="おうし座タウ星 - giapponese" lang="ja" hreflang="ja" data-title="おうし座タウ星" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Tau_Tauri" title="Tau Tauri - portoghese" lang="pt" hreflang="pt" data-title="Tau Tauri" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Tau_Tauri" title="Tau Tauri - svedese" lang="sv" hreflang="sv" data-title="Tau Tauri" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%AF%B8%E7%8E%8B%E5%85%AD" title="诸王六 - cinese" lang="zh" hreflang="zh" data-title="诸王六" 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/Q3235593#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/Tau_Tauri" 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:Tau_Tauri" 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/Tau_Tauri"><span>Leggi</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Tau_Tauri&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=Tau_Tauri&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=Tau_Tauri&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/Tau_Tauri"><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=Tau_Tauri&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=Tau_Tauri&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=Tau_Tauri&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/Tau_Tauri" 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/Tau_Tauri" 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=Tau_Tauri&oldid=142373659" 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=Tau_Tauri&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=Tau_Tauri&id=142373659&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%2Fw%2Findex.php%3Ftitle%3DTau_Tauri%26section%3D6%26veaction%3Dedit"><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%2Fw%2Findex.php%3Ftitle%3DTau_Tauri%26section%3D6%26veaction%3Dedit"><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=Tau+Tauri"><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=Tau_Tauri&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=Tau_Tauri&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 id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q3235593" title="Collegamento all'elemento connesso dell'archivio dati [g]" accesskey="g"><span>Elemento Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Strumenti pagine"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aspetto"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aspetto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">nascondi</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> <div id="mw-indicator-coordinates" class="mw-indicator"><div class="mw-parser-output"><span class="plainlinks nourlexpansion" id="coordinates"><a href="/wiki/Coordinate_celesti" title="Coordinate celesti">Coordinate</a>: <span typeof="mw:File"><span title="Carta celeste"><img alt="Carta celeste" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/20px-Jupiter_and_moon.png" decoding="async" width="20" height="20" 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=4.7040830555556&de=22.956902777778&zoom=6&show_grid=1&show_constellation_lines=1&show_constellation_boundaries=1&show_const_names=1&show_galaxies=1&img_source=IMG_all">04<sup>h</sup> 42<sup>m</sup> 14.699<sup>s</sup>, +22° 57′ 24.85″</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"><tbody><tr class="sinottico_testata"><th colspan="2" style="background: #FF3333;color:white">Tau Tauri</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: 126px; top: 73px; padding: 0;"><span class="mw-valign-top" typeof="mw:File"><a href="/wiki/File:Cercle_rouge_100%25.svg" class="mw-file-description" title="Tau Tauri"><img alt="Tau Tauri" 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:Taurus_IAU.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Taurus_IAU.svg/260px-Taurus_IAU.svg.png" decoding="async" width="260" height="245" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Taurus_IAU.svg/390px-Taurus_IAU.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Taurus_IAU.svg/520px-Taurus_IAU.svg.png 2x" data-file-width="605" data-file-height="571" /></a></span></div> </td></tr><tr><th>Classificazione</th><td><b>Aa</b>: <a href="/wiki/Stella_di_classe_B_V" title="Stella di classe B V">Stella azzurra</a> di <a href="/wiki/Sequenza_principale" title="Sequenza principale">sequenza principale</a><br /><b>Ab</b> e <b>B</b>: <a href="/wiki/Stella_di_classe_A_V" title="Stella di classe A V">stella bianca</a> di sequenza principale </td></tr><tr><th><a href="/wiki/Classificazione_stellare" title="Classificazione stellare">Classe spettrale</a></th><td><b>Aa</b>: B3V C<sup id="cite_ref-Simbad-A_1-2" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br /><b>Ab</b>: A0V-A2V<sup id="cite_ref-Richichi_2-0" class="reference"><a href="#cite_note-Richichi-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><br /> <p><b>B</b>: A2 D<sup id="cite_ref-HD284659_3-0" class="reference"><a href="#cite_note-HD284659-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>-A1 V<sup id="cite_ref-Eggleton_4-0" class="reference"><a href="#cite_note-Eggleton-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> </td></tr><tr><th>Distanza dal Sole</th><td>396 <a href="/wiki/Anno_luce" title="Anno luce">anni luce</a> </td></tr><tr><th><a href="/wiki/Costellazione" title="Costellazione">Costellazione</a></th><td><a href="/wiki/Toro_(costellazione)" title="Toro (costellazione)">Toro</a> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #FF3333;color:white">Coordinate</th></tr><tr><th><a href="/wiki/Ascensione_retta" title="Ascensione retta">Ascensione retta</a></th><td>04<sup>h</sup> 42<sup>m</sup> 14,699<sup>s</sup><sup id="cite_ref-Simbad-A_1-0" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th><a href="/wiki/Declinazione_(astronomia)" title="Declinazione (astronomia)">Declinazione</a></th><td>+22° 57′ 24,850″<sup id="cite_ref-Simbad-A_1-1" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th><a href="/wiki/Latitudine_galattica" title="Latitudine galattica">Lat. galattica</a></th><td>176,644°<sup id="cite_ref-Simbad-A_1-3" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th><a href="/wiki/Longitudine_galattica" title="Longitudine galattica">Long. galattica</a></th><td>-15,072°<sup id="cite_ref-Simbad-A_1-4" class="reference"><a href="#cite_note-Simbad-A-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: #FF3333;color:white">Dati fisici</th></tr><tr><th><a href="/wiki/Massa_(fisica)" title="Massa (fisica)">Massa</a></th><td><div><b>Aa</b>: 6,4<sup id="cite_ref-Tetzlaff_5-0" class="reference"><a href="#cite_note-Tetzlaff-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Massa_solare" title="Massa solare">M<sub>⊙</sub></a></div> </td></tr><tr><th><a href="/wiki/Temperatura_efficace" title="Temperatura efficace">Temperatura<br />superficiale</a></th><td><style data-mw-deduplicate="TemplateStyles:r139487411">.mw-parser-output .lista-none{list-style:none}.mw-parser-output .lista-decimal{list-style:decimal}.mw-parser-output .lista-lower-alpha{list-style:lower-alpha}.mw-parser-output .lista-upper-alpha{list-style:upper-alpha}.mw-parser-output .sinottico .lista-none,.mw-parser-output .lista-none.lista-nomargin{margin-left:0}body.skin-minerva .mw-parser-output .sinottico .lista-none,body.skin-minerva .mw-parser-output .lista-none.lista-nomargin{padding-left:0}body.skin-minerva .mw-parser-output .sinottico .lista-none li{margin-bottom:0}</style><ul class="lista-none"><li class="mw-empty-elt"></li><li><b>Aa</b>: <span class="nowrap"><span data-sort-value="7004187000000000000♠"></span>18<span style="margin-left:.25em;">700</span> <a href="/wiki/Kelvin" title="Kelvin">K</a></span><sup id="cite_ref-Hohle_6-0" class="reference"><a href="#cite_note-Hohle-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <small>(media)</small></li><li class="mw-empty-elt"></li></ul> </td></tr><tr><th><a href="/wiki/Luminosit%C3%A0_(astronomia)" title="Luminosità (astronomia)">Luminosità</a></th><td><div><b>Aa</b>: 1472<sup id="cite_ref-Hohle_6-1" class="reference"><a href="#cite_note-Hohle-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Luminosit%C3%A0_solare" title="Luminosità solare">L<sub>⊙</sub></a></div> </td></tr><tr><th><a href="/wiki/Indice_di_colore" title="Indice di colore">Indice di colore</a> <small>(<a href="/wiki/Sistema_fotometrico_UBV" title="Sistema fotometrico UBV">B-V</a>)</small></th><td><b>Aa</b>: U-B: -0,57, B-V: -0,14<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th><a href="/wiki/Metallicit%C3%A0" title="Metallicità">Metallicità</a></th><td><b>Aa</b>: [Fe/H]: -.51<sup id="cite_ref-Wu2011_8-0" class="reference"><a href="#cite_note-Wu2011-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><br />(31% di quella <a href="/wiki/Sole" title="Sole">solare</a>) </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #FF3333;color:white">Dati osservativi</th></tr><tr><th><a href="/wiki/Magnitudine_apparente" title="Magnitudine apparente">Magnitudine app.</a></th><td>4,258<sup id="cite_ref-Simbad-A_1-5" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th><a href="/wiki/Magnitudine_assoluta" title="Magnitudine assoluta">Magnitudine ass.</a></th><td><b>Aa</b>: -1,15<sup id="cite_ref-Anderson2012_9-0" class="reference"><a href="#cite_note-Anderson2012-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th><a href="/wiki/Parallasse" title="Parallasse">Parallasse</a></th><td><b>Aa</b>: 8,231 ± 0,4049 <a href="/wiki/Milliarcosecondo" title="Milliarcosecondo">mas</a><sup id="cite_ref-Simbad-A_1-6" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br /><b>B</b>: 8,1702 ± 0,0316 mas<sup id="cite_ref-HD284659_3-1" class="reference"><a href="#cite_note-HD284659-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th><a href="/wiki/Moto_proprio" title="Moto proprio">Moto proprio</a></th><td><b>Aa</b>: <a href="/wiki/Ascensione_retta" title="Ascensione retta">AR</a>: 3,181 ± 0,579 <a href="/wiki/Milliarcosecondo" title="Milliarcosecondo">mas</a>/<a href="/wiki/Anno" title="Anno">anno</a><br /><a href="/wiki/Declinazione_(astronomia)" title="Declinazione (astronomia)">Dec</a>: -17,028 ± 0,327 <a href="/wiki/Milliarcosecondo" title="Milliarcosecondo">mas</a>/<a href="/wiki/Anno" title="Anno">anno</a><sup id="cite_ref-Simbad-A_1-7" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br /> <p><b>B</b>: <a href="/wiki/Ascensione_retta" title="Ascensione retta">AR</a>: -0,849 ± 0,040 <a href="/wiki/Milliarcosecondo" title="Milliarcosecondo">mas</a>/<a href="/wiki/Anno" title="Anno">anno</a><br /><a href="/wiki/Declinazione_(astronomia)" title="Declinazione (astronomia)">Dec</a>: -15,087 ± 0,026 <a href="/wiki/Milliarcosecondo" title="Milliarcosecondo">mas</a>/<a href="/wiki/Anno" title="Anno">anno</a><sup id="cite_ref-HD284659_3-2" class="reference"><a href="#cite_note-HD284659-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> </td></tr><tr><th><a href="/wiki/Velocit%C3%A0_radiale" title="Velocità radiale">Velocità radiale</a></th><td>14,6 ± 2 km/s<sup id="cite_ref-Simbad-A_1-8" class="reference"><a href="#cite_note-Simbad-A-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: #FF3333;color:white">Nomenclature alternative</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><div style="text-align:left"><b>A</b>: <a href="/wiki/Nomenclatura_di_Flamsteed" title="Nomenclatura di Flamsteed">94 Tau</a>, <a href="/wiki/Catalogo_HR" title="Catalogo HR">HR</a> 1497, <a href="/wiki/Catalogo_Henry_Draper" title="Catalogo Henry Draper">HD</a> 29763, <a href="/wiki/Catalogo_SAO" title="Catalogo SAO">SAO</a> 76721, <a href="/wiki/Catalogo_Hipparcos" title="Catalogo Hipparcos">HIP</a> 21881, <a href="/wiki/Bonner_Durchmusterung" title="Bonner Durchmusterung">BD</a>+22 739, <a href="/wiki/Washington_Double_Star_Catalog" title="Washington Double Star Catalog">WDS</a> J04422+2257A<sup id="cite_ref-Simbad-A_1-9" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br /> <b>B</b>: HD 284659, BD+22 737, WDS J04422+2257B<sup id="cite_ref-HD284659_3-3" class="reference"><a href="#cite_note-HD284659-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></div> </td></tr><tr><td class="sinottico_piede2 noprint nomobile metadata" colspan="2"><a href="https://www.wikidata.org/wiki/Q3235593" class="extiw" title="d:Q3235593"><span title="Modifica i dati della voce Tau Tauri su Wikidata">Modifica dati su Wikidata</span></a><b> ·</b> <a href="/wiki/Template:Corpo_celeste/man" title="Template:Corpo celeste/man"><span title="Manuale del template Corpo celeste">Manuale</span></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>Tau Tauri</b> (<a href="/wiki/Nomenclatura_di_Bayer" title="Nomenclatura di Bayer">τ Tau, τ Tauri</a>) è un <a href="/wiki/Sistema_stellare" title="Sistema stellare">sistema stellare</a> quadruplo<sup id="cite_ref-Eggleton_4-1" class="reference"><a href="#cite_note-Eggleton-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> situato nella <a href="/wiki/Costellazione" title="Costellazione">costellazione</a> del <a href="/wiki/Toro_(costellazione)" title="Toro (costellazione)">Toro</a>. La sua distanza è stimata sui 396 <a href="/wiki/Anno_luce" title="Anno luce">anni luce</a> dal <a href="/wiki/Sistema_solare" title="Sistema solare">sistema solare</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Osservazione">Osservazione</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tau_Tauri&veaction=edit&section=1" title="Modifica la sezione Osservazione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tau_Tauri&action=edit&section=1" title="Edit section's source code: Osservazione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Iades_and_Pleiades_(32446251210).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Iades_and_Pleiades_%2832446251210%29.jpg/220px-Iades_and_Pleiades_%2832446251210%29.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Iades_and_Pleiades_%2832446251210%29.jpg/330px-Iades_and_Pleiades_%2832446251210%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Iades_and_Pleiades_%2832446251210%29.jpg/440px-Iades_and_Pleiades_%2832446251210%29.jpg 2x" data-file-width="4288" data-file-height="3216" /></a><figcaption>In questo campo stellare che spazia dalle <a href="/wiki/Pleiadi_(astronomia)" title="Pleiadi (astronomia)">Pleiadi</a> alle <a href="/wiki/Iadi" title="Iadi">Iadi</a>, τ Tauri è la stella più luminosa al centro del bordo inferiore.</figcaption></figure> <p>Il sistema stellare è situato nell'<a href="/wiki/Emisfero_boreale" title="Emisfero boreale">emisfero boreale</a> celeste; grazie alla sua posizione non fortemente boreale, può essere osservato dalla gran parte delle regioni della <a href="/wiki/Terra" title="Terra">Terra</a>, sebbene gli osservatori dell'emisfero nord siano più avvantaggiati. Nei pressi del <a href="/wiki/Circolo_polare_artico" title="Circolo polare artico">circolo polare artico</a> appare <a href="/wiki/Circumpolare" class="mw-redirect" title="Circumpolare">circumpolare</a>, mentre resta sempre invisibile solo in prossimità dell'<a href="/wiki/Antartide" title="Antartide">Antartide</a>. La componente principale del sistema ha magnitudine pari a 4,3 e può essere scorta a <a href="/wiki/Occhio_nudo" title="Occhio nudo">occhio nudo</a>, ma solo con un cielo sufficientemente libero dagli effetti dell'<a href="/wiki/Inquinamento_luminoso" title="Inquinamento luminoso">inquinamento luminoso</a>. </p><p>Il periodo migliore per l'osservazione di τ Tauri nel cielo serale ricade nei mesi compresi fra fine ottobre e aprile; da entrambi gli emisferi il periodo di visibilità rimane indicativamente lo stesso, grazie alla posizione della stella non lontana dall'equatore celeste. </p><p>Poiché τ Tauri si colloca in prossimità dell'<a href="/wiki/Eclittica" title="Eclittica">eclittica</a>, può venire <a href="/wiki/Occultazione" title="Occultazione">occultata</a> dalla <a href="/wiki/Luna" title="Luna">Luna</a>.<sup id="cite_ref-Richichi_2-1" class="reference"><a href="#cite_note-Richichi-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Sistema_stellare">Sistema stellare</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tau_Tauri&veaction=edit&section=2" title="Modifica la sezione Sistema stellare" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tau_Tauri&action=edit&section=2" title="Edit section's source code: Sistema stellare"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La componente principale Aa è una stella di <a href="/wiki/Magnitudine_apparente" title="Magnitudine apparente">magnitudine</a> 4,258.<sup id="cite_ref-Simbad-A_1-10" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Fu identificata come <a href="/wiki/Binaria_spettroscopica" title="Binaria spettroscopica">binaria spettroscopica</a> nel 1903 dagli astronomi statunitensi <a href="/wiki/Edwin_Brant_Frost" title="Edwin Brant Frost">Edwin B. Frost</a> e <a href="/wiki/Walter_Sydney_Adams" title="Walter Sydney Adams">Walter S. Adams</a>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Una prima orbita fu calcolata dall'astronomo canadese T. H. Parker (1910), rivista nel 1949 da R. W. Tanner, che determinò correttamente il <a href="/wiki/Periodo_di_rivoluzione" title="Periodo di rivoluzione">periodo di rivoluzione</a> della coppia attorno al comune <a href="/wiki/Centro_di_massa" title="Centro di massa">centro di massa</a> in 2,96 giorni. Il moto fu ulteriormente caratterizzato da <a href="/w/index.php?title=Robert_Methven_Petrie&action=edit&redlink=1" class="new" title="Robert Methven Petrie (la pagina non esiste)">Robert M. Petrie</a> ed Edwin G. Ebbighausen nel 1961.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>La componente Ab è di magnitudine 6,97; la separazione angolare dalla primaria è di <span class="nowrap"><span data-sort-value="6993969627362219074♠"></span>0,2<a href="/wiki/Secondo_(geometria)" title="Secondo (geometria)">″</a></span>,<sup id="cite_ref-Eggleton_4-2" class="reference"><a href="#cite_note-Eggleton-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> mentre il periodo di rivoluzione è stato determinato in 58 anni.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Infine, la componente B, la più distante, è separata dalla primaria da <span class="nowrap"><span data-sort-value="6996304462991736789♠"></span>62,8″</span> ed ha magnitudine 7,1.<sup id="cite_ref-HD284659_3-4" class="reference"><a href="#cite_note-HD284659-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Eggleton_4-3" class="reference"><a href="#cite_note-Eggleton-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Si discosta sufficientemente dalla primaria da aver ricevuto una propria denominazione nel <a href="/wiki/Catalogo_Henry_Draper" title="Catalogo Henry Draper">catalogo Henry Draper</a>, HD 284659. </p> <div class="mw-heading mw-heading2"><h2 id="Caratteristiche_fisiche">Caratteristiche fisiche</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tau_Tauri&veaction=edit&section=3" title="Modifica la sezione Caratteristiche fisiche" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tau_Tauri&action=edit&section=3" title="Edit section's source code: Caratteristiche fisiche"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La componente Aa è una <a href="/wiki/Stella_di_classe_B_V" title="Stella di classe B V">stella azzurra di sequenza principale</a>, di <a href="/wiki/Classe_spettrale" class="mw-redirect" title="Classe spettrale">classe</a> B3V, con una <a href="/wiki/Magnitudine_assoluta" title="Magnitudine assoluta">magnitudine assoluta</a> di -1,15;<sup id="cite_ref-Anderson2012_9-1" class="reference"><a href="#cite_note-Anderson2012-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> possiede una <a href="/wiki/Massa_(fisica)" title="Massa (fisica)">massa</a> di 6,4 <a href="/wiki/Massa_solare" title="Massa solare">masse solari</a><sup id="cite_ref-Tetzlaff_5-1" class="reference"><a href="#cite_note-Tetzlaff-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> e una <a href="/wiki/Luminosit%C3%A0_(fisica)" class="mw-redirect" title="Luminosità (fisica)">luminosità</a> di 1472 <a href="/wiki/Luminosit%C3%A0_solare" title="Luminosità solare">luminosità solari</a>.<sup id="cite_ref-Hohle_6-2" class="reference"><a href="#cite_note-Hohle-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> La superficie della sua <a href="/wiki/Fotosfera" title="Fotosfera">fotosfera</a> raggiunge la temperatura media di <span class="nowrap"><span data-sort-value="7004187000000000000♠"></span>18<span style="margin-left:.25em;">700</span> <a href="/wiki/Kelvin" title="Kelvin">K</a></span>.<sup id="cite_ref-Hohle_6-3" class="reference"><a href="#cite_note-Hohle-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> La sua metallicità [Fe/H] è stata determinata in -.51,<sup id="cite_ref-Wu2011_8-1" class="reference"><a href="#cite_note-Wu2011-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> corrispondente al 31% di quella <a href="/wiki/Sole" title="Sole">solare</a>. </p><p>Non sono note le caratteristiche della compagna più stretta, se non il <a href="/wiki/Periodo_orbitale" class="mw-redirect" title="Periodo orbitale">periodo</a>, pari a 2,957 giorni, e l'<a href="/wiki/Eccentricit%C3%A0_orbitale" title="Eccentricità orbitale">eccentricità</a>, pari 0,05, del moto attorno al comune centro di massa.<sup id="cite_ref-Eggleton_4-4" class="reference"><a href="#cite_note-Eggleton-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>La terza componente del sistema, Ab, è una <a href="/wiki/Stella_di_classe_A_V" title="Stella di classe A V">stella bianca di sequenza principale</a>, classificata come A0V-A2V grazie ad osservazioni condotte in occasione di un'occultazione lunare del sistema.<sup id="cite_ref-Richichi_2-2" class="reference"><a href="#cite_note-Richichi-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Infine, anche la componente B è una stella bianca di sequenza principale, classificata come A2 D<sup id="cite_ref-HD284659_3-5" class="reference"><a href="#cite_note-HD284659-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> o A1 V.<sup id="cite_ref-Eggleton_4-5" class="reference"><a href="#cite_note-Eggleton-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>Mediante <a href="/wiki/Gaia_(satellite)" title="Gaia (satellite)">Gaia</a> è stata determinata una <a href="/wiki/Parallasse" title="Parallasse">parallasse</a> di 8,231 ± 0,4049 <a href="/wiki/Milliarcosecondo" title="Milliarcosecondo">mas</a> per la componente Aa<sup id="cite_ref-Simbad-A_1-11" class="reference"><a href="#cite_note-Simbad-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> e di 8,1702 ± 0,0316 mas per la componente B.<sup id="cite_ref-HD284659_3-6" class="reference"><a href="#cite_note-HD284659-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> I due valori corrispondono rispettivamente a 121,492 parsec (396,25 al) e 122,396 parsec (399,20 al). Avendo una velocità radiale positiva, il sistema si sta ulteriormente allontanando dal Sole. </p> <div class="mw-heading mw-heading2"><h2 id="Ambiente_galattico">Ambiente galattico</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tau_Tauri&veaction=edit&section=4" title="Modifica la sezione Ambiente galattico" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tau_Tauri&action=edit&section=4" title="Edit section's source code: Ambiente galattico"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il sistema τ Tauri sembra appartenere ad un'<a href="/wiki/Associazione_OB" title="Associazione OB">associazione OB</a> che include stelle della costellazione del Toro e della limitrofa <a href="/wiki/Orione_(costellazione)" title="Orione (costellazione)">costellazione di Orione</a>, denominata Taurus-Orion (Taurion) OB, frapposta in linea di vista tra il sistema solare e la <a href="/wiki/Nube_del_Toro" title="Nube del Toro">Nube del Toro</a>.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<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=Tau_Tauri&veaction=edit&section=5" 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=Tau_Tauri&action=edit&section=5" 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 mw-references-columns"><ol class="references"> <li id="cite_note-Simbad-A-1"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Simbad-A_1-0">a</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-1">b</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-2">c</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-3">d</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-4">e</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-5">f</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-6">g</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-7">h</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-8">i</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-9">j</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-10">k</a></i></sup> <sup><i><a href="#cite_ref-Simbad-A_1-11">l</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFSIMBAD_A">τ Tauri nella banca dati astronomica SIMBAD</a></cite>.</span> </li> <li id="cite_note-Richichi-2"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Richichi_2-0">a</a></i></sup> <sup><i><a href="#cite_ref-Richichi_2-1">b</a></i></sup> <sup><i><a href="#cite_ref-Richichi_2-2">c</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFRichichi">A. Richichi <i>et al</i>.</a></cite>, 1994.</span> </li> <li id="cite_note-HD284659-3"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-HD284659_3-0">a</a></i></sup> <sup><i><a href="#cite_ref-HD284659_3-1">b</a></i></sup> <sup><i><a href="#cite_ref-HD284659_3-2">c</a></i></sup> <sup><i><a href="#cite_ref-HD284659_3-3">d</a></i></sup> <sup><i><a href="#cite_ref-HD284659_3-4">e</a></i></sup> <sup><i><a href="#cite_ref-HD284659_3-5">f</a></i></sup> <sup><i><a href="#cite_ref-HD284659_3-6">g</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFSIMBAD_B">HD 284659 nella banca dati astronomica SIMBAD</a></cite>.</span> </li> <li id="cite_note-Eggleton-4"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Eggleton_4-0">a</a></i></sup> <sup><i><a href="#cite_ref-Eggleton_4-1">b</a></i></sup> <sup><i><a href="#cite_ref-Eggleton_4-2">c</a></i></sup> <sup><i><a href="#cite_ref-Eggleton_4-3">d</a></i></sup> <sup><i><a href="#cite_ref-Eggleton_4-4">e</a></i></sup> <sup><i><a href="#cite_ref-Eggleton_4-5">f</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFEggleton2008">P. P. Eggleton e A. A. Tokovinin</a></cite>, 2008. Accessibile tramite VizieR: <a rel="nofollow" class="external autonumber" href="https://vizier.cds.unistra.fr/viz-bin/VizieR-5?-ref=VIZ6742158698a20&-out.add=.&-source=J/MNRAS/389/869/table1&recno=775">[1]</a>.</span> </li> <li id="cite_note-Tetzlaff-5"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Tetzlaff_5-0">a</a></i></sup> <sup><i><a href="#cite_ref-Tetzlaff_5-1">b</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFTetzlaff">N. Tetzlaff <i>et al</i>.</a></cite>, 2011.</span> </li> <li id="cite_note-Hohle-6"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Hohle_6-0">a</a></i></sup> <sup><i><a href="#cite_ref-Hohle_6-1">b</a></i></sup> <sup><i><a href="#cite_ref-Hohle_6-2">c</a></i></sup> <sup><i><a href="#cite_ref-Hohle_6-3">d</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFHohle">M. M. Hohle <i>et al</i>.</a></cite>, 2010.</span> </li> <li id="cite_note-7"><a href="#cite_ref-7"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) A. Mallama, <span style="font-style:italic;">Sloan Magnitudes for the Brightest Stars</span>, in <span style="font-style:italic;">The Journal of the American Association of Variable Star Observers</span>, vol. 42, n. 2, 2014, p. 443, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2014JAVSO..42..443M">2014JAVSO..42..443M</a>.</cite></span> </li> <li id="cite_note-Wu2011-8"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Wu2011_8-0">a</a></i></sup> <sup><i><a href="#cite_ref-Wu2011_8-1">b</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFWu2011">Y. Wu <i>et al</i>.</a></cite>, 2011.</span> </li> <li id="cite_note-Anderson2012-9"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Anderson2012_9-0">a</a></i></sup> <sup><i><a href="#cite_ref-Anderson2012_9-1">b</a></i></sup></span> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFAnderson2012">E. Anderson e C. Francis</a></cite>, 2012.</span> </li> <li id="cite_note-10"><a href="#cite_ref-10"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) E. B. Frost e W. S. Adams, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1086/141021"><span style="font-style:italic;">Additional stars of the Orion type whose radial velocities vary</span></a>, in <span style="font-style:italic;">Astrophysical Journal</span>, vol. 17, 1903, pp. 246-247, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1903ApJ....17..246F">1903ApJ....17..246F</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1086%2F141021">10.1086/141021</a>.</cite></span> </li> <li id="cite_note-11"><a href="#cite_ref-11"><b>^</b></a> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFPetrie">R. M. Petrie ed E. G. Ebbighausen</a></cite>, 1961.</span> </li> <li id="cite_note-12"><a href="#cite_ref-12"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) O. Yu. Malkov <i>et al.</i>, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1051/0004-6361/201219774"><span style="font-style:italic;">Dynamical masses of a selected sample of orbital binaries</span></a>, in <span style="font-style:italic;">Astronomy & Astrophysics</span>, vol. 546, A69, 2012, pp. 1-5, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1051%2F0004-6361%2F201219774">10.1051/0004-6361/201219774</a>.</cite> Accessibile via <a href="/wiki/VizieR" title="VizieR">VizieR</a>, consultando la <a rel="nofollow" class="external text" href="https://vizier.cds.unistra.fr/viz-bin/VizieR-S?WDS%20J04422%2b2257A">nota</a>.</span> </li> <li id="cite_note-13"><a href="#cite_ref-13"><b>^</b></a> <span class="reference-text"><cite class="citation cita" style="font-style:normal"><a href="#CITEREFBouy">H. Bouy e J. Alves</a></cite>, 2015.</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Bibliografia">Bibliografia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tau_Tauri&veaction=edit&section=6" title="Modifica la sezione Bibliografia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tau_Tauri&action=edit&section=6" title="Edit section's source code: Bibliografia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite id="CITEREFAnderson2012" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) E. Anderson e C. Francis, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1134/S1063773712050015"><span style="font-style:italic;">XHIP: An extended hipparcos compilation</span></a>, in <span style="font-style:italic;">Astron. Lett.</span>, vol. 38, 2012, pp. 331–346, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1134%2FS1063773712050015">10.1134/S1063773712050015</a>.</cite></li> <li><cite id="CITEREFBouy" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) H. Bouy e J. Alves, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1051/0004-6361/201527058"><span style="font-style:italic;">Cosmography of OB stars in the solar neighbourhood</span></a>, in <span style="font-style:italic;">Astronomy & Astrophysics</span>, vol. 584, A26, 2015, pp. 1-13, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2015A%26A...584A..26B">2015A%26A...584A..26B</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1051%2F0004-6361%2F201527058">10.1051/0004-6361/201527058</a>.</cite></li> <li><cite id="CITEREFEggleton2008" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) P. P. Eggleton e A. A. Tokovinin, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1111/j.1365-2966.2008.13596.x"><span style="font-style:italic;">A catalogue of multiplicity among bright stellar systems</span></a>, in <span style="font-style:italic;">Monthly Notices of the Royal Astronomical Society</span>, vol. 389, n. 2, 2008, pp. 869-879, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2008MNRAS.389..869E">2008MNRAS.389..869E</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1111%2Fj.1365-2966.2008.13596.x">10.1111/j.1365-2966.2008.13596.x</a>.</cite></li> <li><cite id="CITEREFHohle" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) M. M. Hohle, R. Neuhäuser e B. F. Schutz, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1002/asna.200911355"><span style="font-style:italic;">Masses and luminosities of O- and B-type stars and red supergiants</span></a>, in <span style="font-style:italic;">Astronomische Nachrichten</span>, vol. 331, n. 4, 2010, p. 349, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2010AN....331..349H">2010AN....331..349H</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1002%2Fasna.200911355">10.1002/asna.200911355</a>.</cite></li> <li><cite id="CITEREFPetrie" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) R. M. Petrie e E. G. Ebbighausen, <span style="font-style:italic;">The spectroscopic binary Boss 1107</span>, in <span style="font-style:italic;">Publications of the Dominion Astrophysical Observatory Victoria</span>, vol. 11, 1961, pp. 385-394, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1961PDAO...11..385P">1961PDAO...11..385P</a>.</cite></li> <li><cite id="CITEREFRichichi" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) A. Richichi, G. Calamai e C. Leinert, <span style="font-style:italic;">New binary stars discovered by lunar occultations</span>, in <span style="font-style:italic;">Astronomy and Astrophysics</span>, vol. 286, 1994, pp. 829-837, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1994A%26A...286..829R">1994A%26A...286..829R</a>.</cite></li> <li><cite id="CITEREFTetzlaff" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) N. Tetzlaff, R. Neuhäuser e M. M. Hohle, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1111/j.1365-2966.2010.17434.x"><span style="font-style:italic;">A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun</span></a>, in <span style="font-style:italic;">Monthly Notices of the Royal Astronomical Society</span>, vol. 410, 2011, pp. 190-200, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2011MNRAS.410..190T">2011MNRAS.410..190T</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1111%2Fj.1365-2966.2010.17434.x">10.1111/j.1365-2966.2010.17434.x</a>.</cite></li> <li><cite id="CITEREFWu2011" class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Yue Wu <i>et al.</i>, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1051/0004-6361/201015014"><span style="font-style:italic;">Coudé-feed stellar spectral library - atmospheric parameters</span></a>, in <span style="font-style:italic;">Astronomy and Astrophysics</span>, vol. 525, A71, 2011, pp. 1-21, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2011A%26A...525A..71W">2011A%26A...525A..71W</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1051%2F0004-6361%2F201015014">10.1051/0004-6361/201015014</a>.</cite></li></ul> <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=Tau_Tauri&veaction=edit&section=7" 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=Tau_Tauri&action=edit&section=7" 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/Stelle_principali_della_costellazione_del_Toro" title="Stelle principali della costellazione del Toro">Stelle principali della costellazione del Toro</a></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=Tau_Tauri&veaction=edit&section=8" 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=Tau_Tauri&action=edit&section=8" 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="CITEREFSIMBAD_A" 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://simbad.cds.unistra.fr/simbad/sim-id?Ident=%40732646&Name=*%20tau%20Tau&submit=submit"><span style="font-style:italic;">tau Tau -- Spectroscopic Binary</span></a>, in <span style="font-style:italic;"><a href="/wiki/SIMBAD" title="SIMBAD">SIMBAD</a></span>. <small>URL consultato il 23 novembre 2024</small>.</cite></li> <li><cite id="CITEREFSIMBAD_B" 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://simbad.cds.unistra.fr/simbad/sim-id?Ident=%40732643&Name=HD%20284659&submit=submit"><span style="font-style:italic;">HD 284659 -- Star</span></a>, in <span style="font-style:italic;"><a href="/wiki/SIMBAD" title="SIMBAD">SIMBAD</a></span>. <small>URL consultato il 23 novembre 2024</small>.</cite></li></ul> <div class="noprint" style="width:100%; padding: 3px 0; 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