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dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Open cluster in the constellation Cassiopeia</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px 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class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>relies largely or entirely on a <a href="/wiki/Wikipedia:Articles_with_a_single_source" title="Wikipedia:Articles with a single source">single source</a></b>.<span class="hide-when-compact"> Relevant discussion may be found on the <a href="/wiki/Talk:Trumpler_3##" title="Talk:Trumpler 3">talk page</a>. Please help <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Trumpler_3&action=edit">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">introducing citations to additional sources</a>.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Trumpler+3%22">"Trumpler 3"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Trumpler+3%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Trumpler+3%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Trumpler+3%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Trumpler+3%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Trumpler+3%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">December 2016</span>)</i></span></div></td></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><tbody><tr><th colspan="2" class="infobox-above" style="background: #CCFFFF;">Trumpler 3</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Tr_3.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Tr_3.png/290px-Tr_3.png" decoding="async" width="290" height="240" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Tr_3.png/435px-Tr_3.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Tr_3.png/580px-Tr_3.png 2x" data-file-width="717" data-file-height="594" /></a></span><div class="infobox-caption">Trumpler 3 as seen from the Stellarium Software</div></td></tr><tr><th colspan="2" class="infobox-header" style="background: #CCFFFF;">Observation data (J2000.0 <a href="/wiki/Epoch_(astronomy)" title="Epoch (astronomy)">epoch</a>)</th></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Right_ascension" title="Right ascension">Right ascension</a></th><td class="infobox-data"><span class="nowrap">03<sup>h</sup> 12<sup>m</sup> 00<sup>s</sup></span></td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Declination" title="Declination">Declination</a></th><td class="infobox-data">+63° 15′ 00″</td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Distance_(astronomy)" class="mw-redirect" title="Distance (astronomy)">Distance</a></th><td class="infobox-data">2250 ly (690 pc)</td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Apparent_magnitude" title="Apparent magnitude">Apparent magnitude</a> (V)</th><td class="infobox-data">7.0<sup id="cite_ref-A_1-0" class="reference"><a href="#cite_note-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" class="infobox-header" style="background: #CCFFFF;">Physical characteristics</th></tr><tr><th scope="row" class="infobox-label" style="background: inherit;">Other designations</th><td class="infobox-data"><a href="/wiki/Collinder_catalogue" title="Collinder catalogue">Cr</a> 36, Cl Harvard 1, C 0307+630</td></tr><tr><th colspan="2" class="infobox-header" style="background: #CCFFFF;">Associations</th></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Constellation" title="Constellation">Constellation</a></th><td class="infobox-data"><a href="/wiki/Cassiopeia_(constellation)" title="Cassiopeia (constellation)">Cassiopeia</a></td></tr><tr><td colspan="2" class="infobox-below noprint" style="background: #CCFFFF;">See also: <a href="/wiki/Open_cluster" title="Open cluster">Open cluster</a>, <a href="/wiki/List_of_open_clusters" title="List of open clusters">List of open clusters</a></td></tr></tbody></table> <p><b>Trumpler 3</b> is an open cluster located in the <a href="/wiki/Constellation" title="Constellation">constellation</a> <a href="/wiki/Cassiopeia_(constellation)" title="Cassiopeia (constellation)">Cassiopeia</a>. It has the visual magnitude of 7 and is one of the most famous star clusters in the Trumpler catalogue. </p><p>It has two bright stars, TYC 4053-658-1 and TYC 4053-466-1 of apparent magnitudes 10.16 and 10.02, respectively.<sup id="cite_ref-A_1-1" class="reference"><a href="#cite_note-A-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Tr_3_map.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Tr_3_map.png/220px-Tr_3_map.png" decoding="async" width="220" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Tr_3_map.png/330px-Tr_3_map.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Tr_3_map.png/440px-Tr_3_map.png 2x" data-file-width="510" data-file-height="418" /></a><figcaption>Trumpler 3's location in the constellation Cassiopeia.</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trumpler_3&action=edit&section=1" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-A-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-A_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-A_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Trumpler+3&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id">"SIMBAD Astronomical Database"</a>. <i>Basic data for C 0307+630</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Basic+data+for+C+0307%2B630&rft.atitle=SIMBAD+Astronomical+Database&rft_id=http%3A%2F%2Fsimbad.u-strasbg.fr%2Fsimbad%2Fsim-id%3FIdent%3DTrumpler%2B3%26NbIdent%3D1%26Radius%3D2%26Radius.unit%3Darcmin%26submit%3Dsubmit%2Bid&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrumpler+3" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trumpler_3&action=edit&section=2" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" 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.navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Trumpler_catalogue" title="Template:Trumpler catalogue"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Trumpler_catalogue" title="Template talk:Trumpler catalogue"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Trumpler_catalogue" title="Special:EditPage/Template:Trumpler catalogue"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Trumpler_catalogue" style="font-size:114%;margin:0 4em">Trumpler catalogue</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div><div class="hlist"> <ul><li><a href="/wiki/Robert_Julius_Trumpler" title="Robert Julius Trumpler">Robert Julius Trumpler</a></li></ul> </div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">List</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Trumpler_1&action=edit&redlink=1" class="new" title="Trumpler 1 (page does not exist)">Tr 1</a></li> <li><a href="/wiki/Trumpler_2" title="Trumpler 2">Tr 2</a></li> <li><a class="mw-selflink selflink">Tr 3</a></li> <li><a href="/w/index.php?title=Trumpler_4&action=edit&redlink=1" class="new" title="Trumpler 4 (page does not exist)">Tr 4</a></li> <li><a href="/w/index.php?title=Trumpler_5&action=edit&redlink=1" class="new" title="Trumpler 5 (page does not exist)">Tr 5</a></li> <li><a href="/w/index.php?title=Trumpler_6&action=edit&redlink=1" class="new" title="Trumpler 6 (page does not exist)">Tr 6</a></li> <li><a href="/w/index.php?title=Trumpler_7&action=edit&redlink=1" class="new" title="Trumpler 7 (page does not exist)">Tr 7</a></li> <li><a href="/w/index.php?title=Trumpler_8&action=edit&redlink=1" class="new" title="Trumpler 8 (page does not exist)">Tr 8</a></li> <li><a href="/w/index.php?title=Trumpler_9&action=edit&redlink=1" class="new" title="Trumpler 9 (page does not exist)">Tr 9</a></li> <li><a href="/wiki/Trumpler_10" title="Trumpler 10">Tr 10</a></li> <li><a href="/w/index.php?title=Trumpler_11&action=edit&redlink=1" class="new" title="Trumpler 11 (page does not exist)">Tr 11</a></li> <li><a href="/w/index.php?title=Trumpler_12&action=edit&redlink=1" class="new" title="Trumpler 12 (page does not exist)">Tr 12</a></li> <li><a href="/w/index.php?title=Trumpler_13&action=edit&redlink=1" class="new" title="Trumpler 13 (page does not exist)">Tr 13</a></li> <li><a href="/wiki/Trumpler_14" title="Trumpler 14">Tr 14</a></li> <li><a href="/wiki/Trumpler_15" title="Trumpler 15">Tr 15</a></li> <li><a href="/wiki/Trumpler_16" title="Trumpler 16">Tr 16</a></li> <li><a href="/w/index.php?title=Trumpler_17&action=edit&redlink=1" class="new" title="Trumpler 17 (page does not exist)">Tr 17</a></li> <li><a href="/w/index.php?title=Trumpler_18&action=edit&redlink=1" class="new" title="Trumpler 18 (page does not exist)">Tr 18</a></li> <li><a href="/w/index.php?title=Trumpler_19&action=edit&redlink=1" class="new" title="Trumpler 19 (page does not exist)">Tr 19</a></li> <li><a href="/w/index.php?title=Trumpler_20&action=edit&redlink=1" class="new" title="Trumpler 20 (page does not exist)">Tr 20</a></li> <li><a href="/w/index.php?title=Trumpler_21&action=edit&redlink=1" class="new" title="Trumpler 21 (page does not exist)">Tr 21</a></li> <li><a href="/w/index.php?title=Trumpler_22&action=edit&redlink=1" class="new" title="Trumpler 22 (page does not exist)">Tr 22</a></li> <li><a href="/w/index.php?title=Trumpler_23&action=edit&redlink=1" class="new" title="Trumpler 23 (page does not exist)">Tr 23</a></li> <li><a href="/w/index.php?title=Trumpler_24&action=edit&redlink=1" class="new" title="Trumpler 24 (page does not exist)">Tr 24</a></li> <li><a href="/w/index.php?title=Trumpler_25&action=edit&redlink=1" class="new" title="Trumpler 25 (page does not exist)">Tr 25</a></li> <li><a href="/w/index.php?title=Trumpler_26&action=edit&redlink=1" class="new" title="Trumpler 26 (page does not exist)">Tr 26</a></li> <li><a href="/wiki/Trumpler_27" title="Trumpler 27">Tr 27</a></li> <li><a href="/w/index.php?title=Trumpler_28&action=edit&redlink=1" class="new" title="Trumpler 28 (page does not exist)">Tr 28</a></li> <li><a href="/w/index.php?title=Trumpler_29&action=edit&redlink=1" class="new" title="Trumpler 29 (page does not exist)">Tr 29</a></li> <li><a href="/w/index.php?title=Trumpler_30&action=edit&redlink=1" class="new" title="Trumpler 30 (page does not exist)">Tr 30</a></li> <li><a href="/w/index.php?title=Trumpler_31&action=edit&redlink=1" class="new" title="Trumpler 31 (page does not exist)">Tr 31</a></li> <li><a href="/w/index.php?title=Trumpler_32&action=edit&redlink=1" class="new" title="Trumpler 32 (page does not exist)">Tr 32</a></li> <li><a href="/w/index.php?title=Trumpler_33&action=edit&redlink=1" class="new" title="Trumpler 33 (page does not exist)">Tr 33</a></li> <li><a href="/w/index.php?title=Trumpler_34&action=edit&redlink=1" class="new" title="Trumpler 34 (page does not exist)">Tr 34</a></li> <li><a href="/w/index.php?title=Trumpler_35&action=edit&redlink=1" class="new" title="Trumpler 35 (page does not exist)">Tr 35</a></li> <li><a href="/w/index.php?title=Trumpler_36&action=edit&redlink=1" class="new" title="Trumpler 36 (page does not exist)">Tr 36</a></li> <li><a href="/w/index.php?title=Trumpler_37&action=edit&redlink=1" class="new" title="Trumpler 37 (page does not exist)">Tr 37</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Open_star_cluster" class="mw-redirect" title="Open star cluster">Open star cluster</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><div class="hlist"> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Trumpler_catalog" title="Category:Trumpler catalog">Category</a></li></ul> </div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Constellation_of_Cassiopeia" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="text-align: center;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Cassiopeia_(constellation)" title="Template:Cassiopeia (constellation)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Cassiopeia_(constellation)" title="Template talk:Cassiopeia (constellation)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Cassiopeia_(constellation)" title="Special:EditPage/Template:Cassiopeia (constellation)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Constellation_of_Cassiopeia" style="font-size:114%;margin:0 4em"><a href="/wiki/Cassiopeia_(constellation)" title="Cassiopeia (constellation)">Constellation of Cassiopeia</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div> <ul><li><a href="/wiki/List_of_stars_in_Cassiopeia" title="List of stars in Cassiopeia">List of stars in Cassiopeia</a></li> <li><a href="/wiki/Cassiopeia_in_Chinese_astronomy" title="Cassiopeia in Chinese astronomy">Cassiopeia in Chinese astronomy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Star" title="Star">Stars</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bayer_designation" title="Bayer designation">Bayer</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alpha_Cassiopeiae" title="Alpha Cassiopeiae">α (Schedar)</a></li> <li><a href="/wiki/Beta_Cassiopeiae" title="Beta Cassiopeiae">β (Caph)</a></li> <li><a href="/wiki/Gamma_Cassiopeiae" title="Gamma Cassiopeiae">γ (Navi/Tsih)</a></li> <li><a href="/wiki/Delta_Cassiopeiae" title="Delta Cassiopeiae">δ (Ruchbah)</a></li> <li><a href="/wiki/Epsilon_Cassiopeiae" title="Epsilon Cassiopeiae">ε (Segin)</a></li> <li><a href="/wiki/Zeta_Cassiopeiae" title="Zeta Cassiopeiae">ζ (Fulu)</a></li> <li><a href="/wiki/Eta_Cassiopeiae" title="Eta Cassiopeiae">η (Achird)</a></li> <li><a href="/wiki/Theta_Cassiopeiae" title="Theta Cassiopeiae">θ (Marfak)</a></li> <li><a href="/wiki/Iota_Cassiopeiae" title="Iota Cassiopeiae">ι</a></li> <li><a href="/wiki/Kappa_Cassiopeiae" title="Kappa Cassiopeiae">κ</a></li> <li><a href="/wiki/Lambda_Cassiopeiae" title="Lambda Cassiopeiae">λ</a></li> <li><a href="/wiki/Mu_Cassiopeiae" title="Mu Cassiopeiae">μ</a></li> <li><a href="/wiki/Nu_Cassiopeiae" title="Nu Cassiopeiae">ν</a></li> <li><a href="/wiki/Xi_Cassiopeiae" title="Xi Cassiopeiae">ξ</a></li> <li><a href="/wiki/Omicron_Cassiopeiae" title="Omicron Cassiopeiae">ο</a></li> <li><a href="/wiki/Pi_Cassiopeiae" title="Pi Cassiopeiae">π</a></li> <li><a href="/wiki/Rho_Cassiopeiae" title="Rho Cassiopeiae">ρ</a></li> <li><a href="/wiki/Sigma_Cassiopeiae" title="Sigma Cassiopeiae">σ</a></li> <li><a href="/wiki/Tau_Cassiopeiae" title="Tau Cassiopeiae">τ</a></li> <li><a href="/wiki/Upsilon1_Cassiopeiae" title="Upsilon1 Cassiopeiae">υ<sup>1</sup></a></li> <li><a href="/wiki/Upsilon2_Cassiopeiae" title="Upsilon2 Cassiopeiae">υ<sup>2</sup> (Castula)</a></li> <li><a href="/wiki/Phi_Cassiopeiae" title="Phi Cassiopeiae">φ</a></li> <li><a href="/wiki/Chi_Cassiopeiae" title="Chi Cassiopeiae">χ</a></li> <li><a href="/wiki/Psi_Cassiopeiae" title="Psi Cassiopeiae">ψ</a></li> <li><a href="/wiki/Omega_Cassiopeiae" title="Omega Cassiopeiae">ω</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Flamsteed_designation" title="Flamsteed designation">Flamsteed</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1_Cassiopeiae" title="1 Cassiopeiae">1</a></li> <li><a href="/wiki/2_Cassiopeiae" title="2 Cassiopeiae">2</a></li> <li><a href="/wiki/4_Cassiopeiae" title="4 Cassiopeiae">4</a></li> <li><a href="/wiki/6_Cassiopeiae" title="6 Cassiopeiae">6</a></li> <li><a href="/wiki/9_Cassiopeiae" title="9 Cassiopeiae">9</a></li> <li><a href="/wiki/10_Cassiopeiae" title="10 Cassiopeiae">10</a></li> <li><a href="/wiki/12_Cassiopeiae" title="12 Cassiopeiae">12</a></li> <li><a href="/wiki/42_Cassiopeiae" title="42 Cassiopeiae">42</a></li> <li><a href="/wiki/47_Cassiopeiae" title="47 Cassiopeiae">47</a></li> <li><a href="/wiki/48_Cassiopeiae" title="48 Cassiopeiae">48 (A)</a></li> <li><a href="/wiki/49_Cassiopeiae" title="49 Cassiopeiae">49</a></li> <li><a href="/wiki/50_Cassiopeiae" title="50 Cassiopeiae">50</a></li> <li><a href="/wiki/54_Cassiopeiae" title="54 Cassiopeiae">54</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Variable_star_designation" class="mw-redirect" title="Variable star designation">Variable</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/R_Cassiopeiae" title="R Cassiopeiae">R</a></li> <li><a href="/wiki/S_Cassiopeiae" title="S Cassiopeiae">S</a></li> <li><a href="/wiki/TZ_Cassiopeiae" title="TZ Cassiopeiae">TZ</a></li> <li><a href="/wiki/WZ_Cassiopeiae" title="WZ Cassiopeiae">WZ</a></li> <li><a href="/wiki/YZ_Cassiopeiae" title="YZ Cassiopeiae">YZ (21)</a></li> <li><a href="/wiki/AO_Cassiopeiae" title="AO Cassiopeiae">AO</a></li> <li><a href="/wiki/AR_Cassiopeiae" title="AR Cassiopeiae">AR</a></li> <li><a href="/wiki/PZ_Cassiopeiae" title="PZ Cassiopeiae">PZ</a></li> <li><a href="/wiki/V373_Cassiopeiae" title="V373 Cassiopeiae">V373</a></li> <li><a href="/wiki/V509_Cassiopeiae" title="V509 Cassiopeiae">V509</a></li> <li><a href="/wiki/Gliese_22" title="Gliese 22">V547</a></li> <li><a href="/wiki/V669_Cassiopeiae" title="V669 Cassiopeiae">V669</a></li> <li><a href="/wiki/V705_Cassiopeiae" title="V705 Cassiopeiae">V705</a></li> <li><a href="/wiki/V762_Cassiopeiae" title="V762 Cassiopeiae">V762</a></li> <li><a href="/wiki/V863_Cassiopeiae" class="mw-redirect" title="V863 Cassiopeiae">V863</a></li> <li><a href="/wiki/ADS_1359" title="ADS 1359">V773</a></li> <li><a href="/wiki/HR_511" title="HR 511">V987</a></li> <li><a href="/wiki/HD_224355" title="HD 224355">V1022</a></li> <li><a href="/wiki/Nova_Cassiopeiae_2021" title="Nova Cassiopeiae 2021">V1405</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bright_Star_Catalogue" title="Bright Star Catalogue">HR</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_1976" title="HD 1976">91</a></li> <li><a href="/wiki/HD_3240" title="HD 3240">144</a></li> <li><a href="/wiki/HD_4222" title="HD 4222">196</a></li> <li><a href="/wiki/HR_244" title="HR 244">244</a></li> <li><a href="/wiki/HR_273" title="HR 273">273</a></li> <li><a href="/wiki/HR_297" title="HR 297">297</a></li> <li><a href="/wiki/HD_15920" title="HD 15920">743</a></li> <li><a href="/wiki/HD_19275" title="HD 19275">932</a></li> <li><a href="/wiki/HD_219134" title="HD 219134">8832</a></li> <li><a href="/wiki/HD_219623" title="HD 219623">8853</a></li> <li><a href="/wiki/HD_220074" title="HD 220074">8881</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Henry_Draper_Catalogue" title="Henry Draper Catalogue">HD</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_861" title="HD 861">861</a></li> <li><a href="/wiki/HD_7924" title="HD 7924">7924</a></li> <li><a href="/wiki/HD_7977" title="HD 7977">7977</a></li> <li><a href="/wiki/HD_15558" title="HD 15558">15558</a></li> <li><a href="/wiki/HD_17156" title="HD 17156">17156 (Nushagak)</a></li> <li><a href="/wiki/HD_240210" title="HD 240210">240210</a></li> <li><a href="/wiki/HD_240237" title="HD 240237">240237</a></li> <li><a href="/wiki/HD_240429_and_HD_240430" title="HD 240429 and HD 240430">240429</a></li> <li><a href="/wiki/HD_240429_and_HD_240430" title="HD 240429 and HD 240430">240430</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/BD%2B60%C2%B02522" title="BD+60°2522">BD+60°2522</a></li> <li><a href="/wiki/Gliese_49" title="Gliese 49">Gliese 49</a></li> <li><a href="/wiki/IRAS_23304%2B6147" title="IRAS 23304+6147">IRAS 23304+6147</a></li> <li><a href="/wiki/LS_I_%2B61_303" title="LS I +61 303">LS I +61 303</a></li> <li><a href="/wiki/3C_58" title="3C 58">PSR J0205+6449</a></li> <li><a href="/wiki/Tycho_G" title="Tycho G">Tycho G</a></li> <li><a href="/wiki/4U_0142%2B61" title="4U 0142+61">4U 0142+61</a></li> <li><a href="/wiki/WR_2" title="WR 2">WR 2</a></li> <li><a href="/wiki/WR_3" title="WR 3">WR 3</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Exoplanets" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Exoplanet" title="Exoplanet">Exoplanets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_7924_b" title="HD 7924 b">HD 7924 b</a></li> <li><a href="/wiki/HD_17156_b" title="HD 17156 b">HD 17156 b</a></li> <li><a href="/wiki/HD_219134_b" title="HD 219134 b">HD 219134 b</a></li> <li><a href="/wiki/HD_219134_c" title="HD 219134 c">c</a></li> <li><a href="/wiki/HD_219134_d" title="HD 219134 d">d</a></li> <li><a href="/wiki/HD_219134_h" title="HD 219134 h">e (h)</a></li> <li><a href="/wiki/HD_219134_f" title="HD 219134 f">f</a></li> <li><a href="/wiki/HD_219134_g" title="HD 219134 g">g</a></li> <li><a href="/wiki/HD_240210_b" title="HD 240210 b">HD 240210 b</a></li> <li><a href="/wiki/HD_240237_b" title="HD 240237 b">HD 240237 b</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Star_clusters" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Star_cluster" title="Star cluster">Star clusters</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Messier_52" title="Messier 52">Messier 52</a></li> <li><a href="/wiki/Messier_103" title="Messier 103">Messier 103</a></li> <li><a href="/wiki/NGC_103" title="NGC 103">NGC 103</a></li> <li><a href="/wiki/NGC_110" title="NGC 110">NGC 110</a></li> <li><a href="/wiki/NGC_129" title="NGC 129">NGC 129</a></li> <li><a href="/wiki/NGC_133" title="NGC 133">NGC 133</a></li> <li><a href="/wiki/NGC_136" title="NGC 136">NGC 136</a></li> <li><a href="/wiki/NGC_146" title="NGC 146">NGC 146</a></li> <li><a href="/wiki/NGC_189" title="NGC 189">NGC 189</a></li> <li><a href="/wiki/NGC_225" title="NGC 225">NGC 225</a></li> <li><a href="/wiki/NGC_358" title="NGC 358">NGC 358</a></li> <li><a href="/wiki/NGC_366" title="NGC 366">NGC 366</a></li> <li><a href="/wiki/NGC_381" title="NGC 381">NGC 381</a></li> <li><a href="/wiki/NGC_433" title="NGC 433">NGC 433</a></li> <li><a href="/wiki/NGC_436" title="NGC 436">NGC 436</a></li> <li><a href="/wiki/NGC_457" title="NGC 457">NGC 457</a></li> <li><a href="/wiki/NGC_559" title="NGC 559">NGC 559</a></li> <li><a href="/wiki/NGC_637" title="NGC 637">NGC 637</a></li> <li><a href="/wiki/NGC_654" title="NGC 654">NGC 654</a></li> <li><a href="/wiki/NGC_659" title="NGC 659">NGC 659</a></li> <li><a href="/wiki/NGC_663" title="NGC 663">NGC 663</a></li> <li><a href="/wiki/NGC_1027" title="NGC 1027">NGC 1027</a></li> <li><a href="/wiki/NGC_7789" title="NGC 7789">NGC 7789</a></li> <li><a href="/wiki/NGC_7790" title="NGC 7790">NGC 7790</a></li> <li><a class="mw-selflink selflink">Trumpler 3</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Nebula" title="Nebula">Nebulae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/New_General_Catalogue" title="New General Catalogue">NGC</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_281" title="NGC 281">281</a></li> <li><a href="/wiki/NGC_7635" class="mw-redirect" title="NGC 7635">7635</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/3C_58" title="3C 58">3C 58</a></li> <li><a href="/wiki/Cassiopeia_A" title="Cassiopeia A">Cassiopeia A</a></li> <li><a href="/wiki/Heart_Nebula" title="Heart Nebula">Heart Nebula</a></li> <li><a href="/wiki/IC_289" title="IC 289">IC 289</a></li> <li><a href="/wiki/IC_1805" class="mw-redirect" title="IC 1805">IC 1805</a></li> <li><a href="/wiki/KjPn_8" title="KjPn 8">KjPn 8</a></li> <li><a href="/wiki/LBN_114.55%2B00.22" title="LBN 114.55+00.22">LBN 114.55+00.22</a></li> <li><a href="/wiki/Sh_2-185" title="Sh 2-185">Sh 2-185</a></li> <li><a href="/wiki/Westerhout_5" title="Westerhout 5">Westerhout 5</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Galaxy" title="Galaxy">Galaxies</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px">NGC</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_147" title="NGC 147">147</a></li> <li><a href="/wiki/NGC_185" title="NGC 185">185</a></li> <li><a href="/wiki/NGC_278" title="NGC 278">278</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Andromeda_VII" class="mw-redirect" title="Andromeda VII">Andromeda VII</a></li> <li><a href="/wiki/3C_20" title="3C 20">3C 20</a></li> <li><a href="/wiki/3C_35" title="3C 35">3C 35</a></li> <li><a href="/wiki/Dwingeloo_1" title="Dwingeloo 1">Dwingeloo 1</a></li> <li><a href="/wiki/Dwingeloo_2" title="Dwingeloo 2">Dwingeloo 2</a></li> <li><a href="/wiki/MB_3" title="MB 3">MB 3</a></li> <li><a href="/wiki/IC_10" title="IC 10">IC 10</a></li> <li><a href="/wiki/Maffei_1" title="Maffei 1">Maffei 1</a></li> <li><a href="/wiki/Maffei_2" title="Maffei 2">Maffei 2</a></li> <li><a href="/wiki/QSO_B0153%2B744" title="QSO B0153+744">QSO B0153+744</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Astronomical_events" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Transient_astronomical_event" class="mw-redirect" title="Transient astronomical event">Astronomical events</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/SN_1181" title="SN 1181">SN 1181</a></li> <li><a href="/wiki/SN_1572" title="SN 1572">SN 1572 (B)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Cassiopeia_(constellation)" title="Category:Cassiopeia (constellation)">Category</a></div></td></tr></tbody></table></div> <style data-mw-deduplicate="TemplateStyles:r1012311289">.mw-parser-output .asbox{position:relative;overflow:hidden}.mw-parser-output .asbox table{background:transparent}.mw-parser-output .asbox p{margin:0}.mw-parser-output .asbox p+p{margin-top:0.25em}.mw-parser-output .asbox-body{font-style:italic}.mw-parser-output .asbox-note{font-size:smaller}.mw-parser-output .asbox .navbar{position:absolute;top:-0.75em;right:1em;display:none}</style><div role="note" class="metadata plainlinks asbox stub"><table role="presentation"><tbody><tr class="noresize"><td><span typeof="mw:File"><a href="/wiki/File:NGC_346_in_Small_magellanic_cloud.jpg" class="mw-file-description"><img alt="Stub icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/NGC_346_in_Small_magellanic_cloud.jpg/35px-NGC_346_in_Small_magellanic_cloud.jpg" decoding="async" width="35" height="37" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/NGC_346_in_Small_magellanic_cloud.jpg/53px-NGC_346_in_Small_magellanic_cloud.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/NGC_346_in_Small_magellanic_cloud.jpg/70px-NGC_346_in_Small_magellanic_cloud.jpg 2x" data-file-width="6555" data-file-height="6995" /></a></span></td><td><p class="asbox-body">This star cluster–related article is a <a href="/wiki/Wikipedia:Stub" title="Wikipedia:Stub">stub</a>. 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