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Available in 10 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-10" 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">10 languages</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/Ruchba" title="Ruchba – Asturian" lang="ast" hreflang="ast" data-title="Ruchba" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Omega2_Cygni" title="Omega2 Cygni – German" lang="de" hreflang="de" data-title="Omega2 Cygni" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Ruchba" title="Ruchba – Spanish" lang="es" hreflang="es" data-title="Ruchba" data-language-autonym="Español" data-language-local-name="Spanish" 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%B1%DA%A9%D8%A8%D8%A9%D8%A7%D9%84%D8%AF%D8%AC%D8%A7%D8%AC%D9%87" title="رکبةالدجاجه – Persian" lang="fa" hreflang="fa" data-title="رکبةالدجاجه" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9E%D0%BC%D0%B5%D0%B3%D0%B02_%D0%9B%D0%B5%D0%B1%D0%B5%D0%B4" title="Омега2 Лебед – Macedonian" lang="mk" hreflang="mk" data-title="Омега2 Лебед" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Ruchba" title="Ruchba – Dutch" lang="nl" hreflang="nl" data-title="Ruchba" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Omega2_Cygni" title="Omega2 Cygni – Portuguese" lang="pt" hreflang="pt" data-title="Omega2 Cygni" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link 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background-color: #FFFFC0;" colspan="2">Observation data<br /><a href="/wiki/Epoch_(astronomy)" title="Epoch (astronomy)">Epoch</a> <a href="/wiki/J2000.0" class="mw-redirect" title="J2000.0">J2000.0</a>      <a href="/wiki/Equinox_(celestial_coordinates)" title="Equinox (celestial coordinates)">Equinox</a> <a href="/wiki/J2000.0" class="mw-redirect" title="J2000.0">J2000.0</a> (<a href="/wiki/International_Celestial_Reference_System" class="mw-redirect" title="International Celestial Reference System">ICRS</a>) </th></tr> <tr style="vertical-align:top"> <th style="text-align:left"><a href="/wiki/Constellation" title="Constellation">Constellation</a> </th> <td><a href="/wiki/Cygnus_(constellation)" title="Cygnus (constellation)">Cygnus</a> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left"><span class="nowrap"><a href="/wiki/Right_ascension" title="Right ascension">Right ascension</a></span> </th> <td><span class="nowrap">20<sup>h</sup> 31<sup>m</sup> 18.81663<sup>s</sup></span><sup id="cite_ref-vanLeeuwen2007_1-0" class="reference"><a href="#cite_note-vanLeeuwen2007-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left"><a href="/wiki/Declination" title="Declination">Declination</a> </th> <td>+49° 13′ 13.0656″<sup id="cite_ref-vanLeeuwen2007_1-1" class="reference"><a href="#cite_note-vanLeeuwen2007-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left"><span class="nowrap"><a href="/wiki/Apparent_magnitude" title="Apparent magnitude">Apparent magnitude</a> (V)</span> </th> <td><span class="nowrap"><span data-sort-value="7000552920000000000♠"></span>5.5292<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.0013</span><sup id="cite_ref-Famaey2005_2-0" class="reference"><a href="#cite_note-Famaey2005-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <th style="background-color: #FFFFC0; text-align: center;" colspan="2">Characteristics </th></tr> <tr style="vertical-align:top"> <th style="text-align:left"><a href="/wiki/Stellar_classification" title="Stellar classification">Spectral type</a> </th> <td>M2 III<sup id="cite_ref-Eggen1992_3-0" class="reference"><a href="#cite_note-Eggen1992-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </td></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2"><a href="/wiki/Astrometry" title="Astrometry">Astrometry</a></th></tr><tr><th colspan="2" style="text-align: center"></th></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Radial_velocity" title="Radial velocity">Radial velocity</a> (R<sub>v</sub>)</b></td><td><span class="nowrap"><span data-sort-value="2998358499999999999♠"></span>−64.15<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.20</span><sup id="cite_ref-Famaey2005_2-1" class="reference"><a href="#cite_note-Famaey2005-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><span class="nowrap"> km/s</span></td></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Proper_motion" title="Proper motion">Proper motion</a> (μ)</b></td><td> <abbr title="Right Ascension">RA:</abbr> +9.21<sup id="cite_ref-vanLeeuwen2007_1-2" class="reference"><a href="#cite_note-vanLeeuwen2007-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><span class="nowrap"> <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a>/<a href="/wiki/Year" title="Year">yr</a></span> <br /> <abbr title="Declination">Dec.:</abbr> −31.88<sup id="cite_ref-vanLeeuwen2007_1-3" class="reference"><a href="#cite_note-vanLeeuwen2007-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><span class="nowrap"> <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a>/<a href="/wiki/Year" title="Year">yr</a></span> </td></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Stellar_parallax" title="Stellar parallax">Parallax</a> (π)</b></td><td>8.17<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.19 <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a><sup id="cite_ref-vanLeeuwen2007_1-4" class="reference"><a href="#cite_note-vanLeeuwen2007-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Distance_(astronomy)" class="mw-redirect" title="Distance (astronomy)">Distance</a></b></td><td>399 ± 9 <a href="/wiki/Light-year" title="Light-year">ly</a> <br />(122 ± 3 <a href="/wiki/Parsec" title="Parsec">pc</a>)</td></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Absolute_magnitude" title="Absolute magnitude">Absolute magnitude</a> (M<sub>V</sub>)</b></td><td>+0.00<sup id="cite_ref-Anderson2012_4-0" class="reference"><a href="#cite_note-Anderson2012-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Details</th></tr><tr><th colspan="2" style="text-align: center"></th></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Luminosity" title="Luminosity">Luminosity</a></b></td><td>301<sup id="cite_ref-Mcdonald2012_5-0" class="reference"><a href="#cite_note-Mcdonald2012-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Solar_luminosity" title="Solar luminosity"><var>L</var><sub>☉</sub></a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Effective_temperature" title="Effective temperature">Temperature</a></b></td><td>3,847<sup id="cite_ref-Mcdonald2012_5-1" class="reference"><a href="#cite_note-Mcdonald2012-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Kelvin" title="Kelvin">K</a></td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2"><a href="/wiki/Star_catalogue" title="Star catalogue">Other designations</a></th></tr><tr><td colspan="2"><a href="/wiki/Bayer_designation" title="Bayer designation">ω<sup>2</sup> Cyg</a>, <a href="/wiki/Flamsteed_designation" title="Flamsteed designation">46</a> Cygni, <a href="/wiki/Durchmusterung" title="Durchmusterung">BD</a>+48° 3154, <a href="/wiki/Henry_Draper_Catalogue" title="Henry Draper Catalogue">HD</a> 195774, <a href="/wiki/Hipparcos_Catalogue" class="mw-redirect" title="Hipparcos Catalogue">HIP</a> 101243, <a href="/wiki/Harvard_Revised_catalogue" class="mw-redirect" title="Harvard Revised catalogue">HR</a> 7851, <a href="/wiki/Smithsonian_Astrophysical_Observatory_Star_Catalog" title="Smithsonian Astrophysical Observatory Star Catalog">SAO</a> 49741.<sup id="cite_ref-SIMBAD_6-0" class="reference"><a href="#cite_note-SIMBAD-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></td></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Database references</th></tr><tr style="vertical-align: top;"><td><b><a href="/wiki/SIMBAD" title="SIMBAD">SIMBAD</a></b></td><td><a rel="nofollow" class="external text" href="https://simbad.cds.unistra.fr/simbad/sim-id?Ident=46+Cyg">data</a></td></tr> </tbody></table> <p><b>Omega<sup>2</sup> Cygni</b>, <a href="/wiki/Latinisation_of_names" title="Latinisation of names">Latinized</a> from ω<sup>2</sup> Cygni, is the <a href="/wiki/Bayer_designation" title="Bayer designation">Bayer designation</a> for a solitary<sup id="cite_ref-Eggleton2008_7-0" class="reference"><a href="#cite_note-Eggleton2008-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Star" title="Star">star</a> in the northern <a href="/wiki/Constellation" title="Constellation">constellation</a> of <a href="/wiki/Cygnus_(constellation)" title="Cygnus (constellation)">Cygnus</a>. It has an <a href="/wiki/Apparent_visual_magnitude" class="mw-redirect" title="Apparent visual magnitude">apparent visual magnitude</a> of 5.5,<sup id="cite_ref-Famaey2005_2-2" class="reference"><a href="#cite_note-Famaey2005-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> which is faintly visible to the naked eye on a dark night. Based upon an annual <a href="/wiki/Stellar_parallax" title="Stellar parallax">parallax shift</a> of 8.17 <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a>,<sup id="cite_ref-vanLeeuwen2007_1-5" class="reference"><a href="#cite_note-vanLeeuwen2007-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> it is located roughly 399 <a href="/wiki/Light_year" class="mw-redirect" title="Light year">light years</a> from the <a href="/wiki/Sun" title="Sun">Sun</a>. At that distance, the visual magnitude is diminished by an <a href="/wiki/Extinction_(astronomy)" title="Extinction (astronomy)">extinction factor</a> of 0.08 due to <a href="/wiki/Interstellar_dust" class="mw-redirect" title="Interstellar dust">interstellar dust</a>.<sup id="cite_ref-Famaey2005_2-3" class="reference"><a href="#cite_note-Famaey2005-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>This is a <a href="/wiki/Red_giant" title="Red giant">red giant</a> star on the <a href="/wiki/Asymptotic_giant_branch" title="Asymptotic giant branch">asymptotic giant branch</a>, with a <a href="/wiki/Stellar_classification" title="Stellar classification">stellar classification</a> of M2 III.<sup id="cite_ref-Eggen1992_3-1" class="reference"><a href="#cite_note-Eggen1992-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> It is a suspected <a href="/wiki/Variable_star" title="Variable star">variable star</a>, although the evidence is considered "doubtful or erroneous". If it does exist, the variability is small with an <a href="/wiki/Amplitude" title="Amplitude">amplitude</a> of 0.05 magnitude and a timescale of around 30 days.<sup id="cite_ref-Percy1992_8-0" class="reference"><a href="#cite_note-Percy1992-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> There is a 58.3% chance that this star is a member of the <a href="/wiki/Hercules_stream" title="Hercules stream">Hercules stream</a>.<sup id="cite_ref-Famaey2005_2-4" class="reference"><a href="#cite_note-Famaey2005-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Omega2_Cygni&action=edit&section=1" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Omega1_Cygni" title="Omega1 Cygni">Omega<sup>1</sup> Cygni</a></li></ul> <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=Omega2_Cygni&action=edit&section=2" 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-vanLeeuwen2007-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-vanLeeuwen2007_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-vanLeeuwen2007_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-vanLeeuwen2007_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-vanLeeuwen2007_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-vanLeeuwen2007_1-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-vanLeeuwen2007_1-5"><sup><i><b>f</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFvan_Leeuwen2007" class="citation cs2">van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", <i>Astronomy and Astrophysics</i>, <b>474</b> (2): <span class="nowrap">653–</span>664, <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/0708.1752">0708.1752</a></span>, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2007A&A...474..653V">2007A&A...474..653V</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%3A20078357">10.1051/0004-6361:20078357</a>, <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:18759600">18759600</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomy+and+Astrophysics&rft.atitle=Validation+of+the+new+Hipparcos+reduction&rft.volume=474&rft.issue=2&rft.pages=%3Cspan+class%3D%22nowrap%22%3E653-%3C%2Fspan%3E664&rft.date=2007&rft_id=info%3Aarxiv%2F0708.1752&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A18759600%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1051%2F0004-6361%3A20078357&rft_id=info%3Abibcode%2F2007A%26A...474..653V&rft.aulast=van+Leeuwen&rft.aufirst=F.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOmega2+Cygni" class="Z3988"></span></span> </li> <li id="cite_note-Famaey2005-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-Famaey2005_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Famaey2005_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Famaey2005_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Famaey2005_2-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-Famaey2005_2-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFFamaeyJorissenLuriMayor2005" class="citation cs2">Famaey, B.; et al. (January 2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", <i>Astronomy and Astrophysics</i>, <b>430</b> (1): <span class="nowrap">165–</span>186, <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/astro-ph/0409579">astro-ph/0409579</a></span>, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2005A&A...430..165F">2005A&A...430..165F</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%3A20041272">10.1051/0004-6361:20041272</a>, <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:17804304">17804304</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomy+and+Astrophysics&rft.atitle=Local+kinematics+of+K+and+M+giants+from+CORAVEL%2FHipparcos%2FTycho-2+data.+Revisiting+the+concept+of+superclusters&rft.volume=430&rft.issue=1&rft.pages=%3Cspan+class%3D%22nowrap%22%3E165-%3C%2Fspan%3E186&rft.date=2005-01&rft_id=info%3Aarxiv%2Fastro-ph%2F0409579&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A17804304%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1051%2F0004-6361%3A20041272&rft_id=info%3Abibcode%2F2005A%26A...430..165F&rft.aulast=Famaey&rft.aufirst=B.&rft.au=Jorissen%2C+A.&rft.au=Luri%2C+X.&rft.au=Mayor%2C+M.&rft.au=Udry%2C+S.&rft.au=Dejonghe%2C+H.&rft.au=Turon%2C+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOmega2+Cygni" class="Z3988"></span></span> </li> <li id="cite_note-Eggen1992-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-Eggen1992_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Eggen1992_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFEggen1992" class="citation cs2">Eggen, Olin J. (July 1992), "Asymptotic giant branch stars near the sun", <i>Astronomical Journal</i>, <b>104</b> (1): <span class="nowrap">275–</span>313, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1992AJ....104..275E">1992AJ....104..275E</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F116239">10.1086/116239</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomical+Journal&rft.atitle=Asymptotic+giant+branch+stars+near+the+sun&rft.volume=104&rft.issue=1&rft.pages=%3Cspan+class%3D%22nowrap%22%3E275-%3C%2Fspan%3E313&rft.date=1992-07&rft_id=info%3Adoi%2F10.1086%2F116239&rft_id=info%3Abibcode%2F1992AJ....104..275E&rft.aulast=Eggen&rft.aufirst=Olin+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOmega2+Cygni" class="Z3988"></span></span> </li> <li id="cite_note-Anderson2012-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-Anderson2012_4-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFAndersonFrancis2012" class="citation cs2">Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", <i>Astronomy Letters</i>, <b>38</b> (5): 331, <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1108.4971">1108.4971</a></span>, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2012AstL...38..331A">2012AstL...38..331A</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1134%2FS1063773712050015">10.1134/S1063773712050015</a>, <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:119257644">119257644</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomy+Letters&rft.atitle=XHIP%3A+An+extended+hipparcos+compilation&rft.volume=38&rft.issue=5&rft.pages=331&rft.date=2012&rft_id=info%3Aarxiv%2F1108.4971&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A119257644%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1134%2FS1063773712050015&rft_id=info%3Abibcode%2F2012AstL...38..331A&rft.aulast=Anderson&rft.aufirst=E.&rft.au=Francis%2C+Ch.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOmega2+Cygni" class="Z3988"></span></span> </li> <li id="cite_note-Mcdonald2012-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-Mcdonald2012_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Mcdonald2012_5-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFMcDonaldZijlstraBoyer2012" class="citation cs2">McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", <i>Monthly Notices of the Royal Astronomical Society</i>, <b>427</b> (1): <span class="nowrap">343–</span>57, <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1208.2037">1208.2037</a></span>, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2012MNRAS.427..343M">2012MNRAS.427..343M</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1365-2966.2012.21873.x">10.1111/j.1365-2966.2012.21873.x</a></span>, <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:118665352">118665352</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Monthly+Notices+of+the+Royal+Astronomical+Society&rft.atitle=Fundamental+Parameters+and+Infrared+Excesses+of+Hipparcos+Stars&rft.volume=427&rft.issue=1&rft.pages=%3Cspan+class%3D%22nowrap%22%3E343-%3C%2Fspan%3E57&rft.date=2012&rft_id=info%3Aarxiv%2F1208.2037&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A118665352%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1111%2Fj.1365-2966.2012.21873.x&rft_id=info%3Abibcode%2F2012MNRAS.427..343M&rft.aulast=McDonald&rft.aufirst=I.&rft.au=Zijlstra%2C+A.+A.&rft.au=Boyer%2C+M.+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOmega2+Cygni" class="Z3988"></span></span> </li> <li id="cite_note-SIMBAD-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-SIMBAD_6-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ome02+Cyg">"ome02 Cyg"</a>. <i><a href="/wiki/SIMBAD" title="SIMBAD">SIMBAD</a></i>. <a href="/wiki/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg" title="Centre de données astronomiques de Strasbourg">Centre de données astronomiques de Strasbourg</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2017-02-22</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=SIMBAD&rft.atitle=ome02+Cyg&rft_id=http%3A%2F%2Fsimbad.u-strasbg.fr%2Fsimbad%2Fsim-basic%3FIdent%3Dome02%2BCyg&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOmega2+Cygni" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: CS1 maint: postscript (<a href="/wiki/Category:CS1_maint:_postscript" title="Category:CS1 maint: postscript">link</a>)</span></span> </li> <li id="cite_note-Eggleton2008-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-Eggleton2008_7-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFEggletonTokovinin2008" class="citation cs2">Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", <i><a href="/wiki/Monthly_Notices_of_the_Royal_Astronomical_Society" title="Monthly Notices of the Royal Astronomical Society">Monthly Notices of the Royal Astronomical Society</a></i>, <b>389</b> (2): <span class="nowrap">869–</span>879, <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/0806.2878">0806.2878</a></span>, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2008MNRAS.389..869E">2008MNRAS.389..869E</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1365-2966.2008.13596.x">10.1111/j.1365-2966.2008.13596.x</a></span>, <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:14878976">14878976</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Monthly+Notices+of+the+Royal+Astronomical+Society&rft.atitle=A+catalogue+of+multiplicity+among+bright+stellar+systems&rft.volume=389&rft.issue=2&rft.pages=%3Cspan+class%3D%22nowrap%22%3E869-%3C%2Fspan%3E879&rft.date=2008-09&rft_id=info%3Aarxiv%2F0806.2878&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A14878976%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1111%2Fj.1365-2966.2008.13596.x&rft_id=info%3Abibcode%2F2008MNRAS.389..869E&rft.aulast=Eggleton&rft.aufirst=P.+P.&rft.au=Tokovinin%2C+A.+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOmega2+Cygni" class="Z3988"></span></span> </li> <li id="cite_note-Percy1992-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-Percy1992_8-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFPercyFleming1992" class="citation cs2">Percy, John R.; Fleming, David E. B. (February 1992), "A photometric survey of suspected small-amplitude red variables", <i>Publications of the Astronomical Society of the Pacific</i>, <b>104</b>: <span class="nowrap">96–</span>100, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1992PASP..104...96P">1992PASP..104...96P</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F132963">10.1086/132963</a></span>.</cite><span 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navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6em"><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/Deneb" title="Deneb">α (Deneb)</a></li> <li><a href="/wiki/Albireo" title="Albireo">β (Albireo)</a></li> <li><a href="/wiki/Gamma_Cygni" title="Gamma Cygni">γ (Sadr)</a></li> <li><a href="/wiki/Delta_Cygni" title="Delta Cygni">δ (Fawaris)</a></li> <li><a href="/wiki/Epsilon_Cygni" title="Epsilon Cygni">ε (Aljanah)</a></li> <li><a href="/wiki/Zeta_Cygni" title="Zeta Cygni">ζ</a></li> <li><a href="/wiki/Eta_Cygni" title="Eta Cygni">η</a></li> <li><a href="/wiki/Theta_Cygni" title="Theta Cygni">θ</a></li> <li><a href="/wiki/Iota1_Cygni" title="Iota1 Cygni">ι<sup>1</sup></a></li> <li><a href="/wiki/Iota2_Cygni" title="Iota2 Cygni">ι<sup>2</sup></a></li> <li><a href="/wiki/Kappa_Cygni" title="Kappa Cygni">κ</a></li> <li><a href="/wiki/Lambda_Cygni" title="Lambda Cygni">λ</a></li> <li><a href="/wiki/Mu_Cygni" title="Mu Cygni">μ</a></li> <li><a href="/wiki/Nu_Cygni" title="Nu Cygni">ν</a></li> <li><a href="/wiki/Xi_Cygni" title="Xi Cygni">ξ</a></li> <li><a href="/wiki/30_Cygni" title="30 Cygni">o<sup>1</sup></a></li> <li><a href="/wiki/31_Cygni" title="31 Cygni">o<sup>2</sup></a></li> <li><a href="/wiki/32_Cygni" title="32 Cygni">ο<sup>3</sup></a></li> <li><a href="/wiki/Pi1_Cygni" title="Pi1 Cygni">π<sup>1</sup> (Azelfafage)</a></li> <li><a href="/wiki/Pi2_Cygni" title="Pi2 Cygni">π<sup>2</sup></a></li> <li><a href="/wiki/Rho_Cygni" title="Rho Cygni">ρ</a></li> <li><a href="/wiki/Sigma_Cygni" title="Sigma Cygni">σ</a></li> <li><a href="/wiki/Tau_Cygni" title="Tau Cygni">τ</a></li> <li><a href="/wiki/Upsilon_Cygni" title="Upsilon Cygni">υ</a></li> <li><a href="/wiki/Phi_Cygni" title="Phi Cygni">φ</a></li> <li><a href="/wiki/Chi_Cygni" title="Chi Cygni">χ</a></li> <li><a href="/wiki/Psi_Cygni" title="Psi Cygni">ψ</a></li> <li><a href="/wiki/Omega1_Cygni" title="Omega1 Cygni">ω<sup>1</sup></a></li> <li><a class="mw-selflink selflink">ω<sup>2</sup></a></li> <li><a href="/wiki/P_Cygni" title="P Cygni">P</a></li> <li><a href="/wiki/Q_Cygni" title="Q Cygni">Q</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><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/2_Cygni" title="2 Cygni">2</a></li> <li><a href="/wiki/4_Cygni" title="4 Cygni">4</a></li> <li><a href="/wiki/8_Cygni" title="8 Cygni">8</a></li> <li><a href="/wiki/9_Cygni" title="9 Cygni">9</a></li> <li><a href="/wiki/15_Cygni" title="15 Cygni">15</a></li> <li><a href="/wiki/16_Cygni" title="16 Cygni">16 (c)</a></li> <li><a href="/wiki/17_Cygni" title="17 Cygni">17</a></li> <li><a href="/wiki/20_Cygni" title="20 Cygni">20 (d)</a></li> <li><a href="/wiki/22_Cygni" title="22 Cygni">22</a></li> <li><a href="/wiki/23_Cygni" title="23 Cygni">23</a></li> <li><a href="/wiki/26_Cygni" title="26 Cygni">26 (e)</a></li> <li><a href="/wiki/27_Cygni" title="27 Cygni">27 (b<sup>1</sup>)</a></li> <li><a href="/wiki/28_Cygni" title="28 Cygni">28 (b<sup>2</sup>)</a></li> <li><a href="/wiki/29_Cygni" title="29 Cygni">29 (b<sup>3</sup>)</a></li> <li><a href="/wiki/33_Cygni" title="33 Cygni">33</a></li> <li><a href="/wiki/35_Cygni" title="35 Cygni">35</a></li> <li><a href="/wiki/39_Cygni" title="39 Cygni">39</a></li> <li><a href="/wiki/41_Cygni" title="41 Cygni">41</a></li> <li><a href="/wiki/47_Cygni" title="47 Cygni">47</a></li> <li><a href="/wiki/52_Cygni" title="52 Cygni">52</a></li> <li><a href="/wiki/55_Cygni" title="55 Cygni">55</a></li> <li><a href="/wiki/56_Cygni" title="56 Cygni">56</a></li> <li><a href="/wiki/57_Cygni" title="57 Cygni">57</a></li> <li><a href="/wiki/59_Cygni" title="59 Cygni">59 (f<sup>1</sup>)</a></li> <li><a href="/wiki/61_Cygni" title="61 Cygni">61</a></li> <li><a href="/wiki/63_Cygni" title="63 Cygni">63 (f<sup>2</sup>)</a></li> <li><a href="/wiki/68_Cygni" title="68 Cygni">68 (A)</a></li> <li><a href="/wiki/71_Cygni" title="71 Cygni">71 (g)</a></li> <li><a href="/wiki/72_Cygni" title="72 Cygni">72</a></li> <li><a href="/wiki/74_Cygni" title="74 Cygni">74</a></li> <li><a href="/wiki/75_Cygni" title="75 Cygni">75</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><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_Cygni" title="R Cygni">R</a></li> <li><a href="/wiki/T_Cygni" title="T Cygni">T</a></li> <li><a href="/wiki/W_Cygni" title="W Cygni">W</a></li> <li><a href="/wiki/X_Cygni" title="X Cygni">X</a></li> <li><a href="/wiki/Y_Cygni" title="Y Cygni">Y</a></li> <li><a href="/wiki/RW_Cygni" title="RW Cygni">RW</a></li> <li><a href="/wiki/SS_Cygni" title="SS Cygni">SS</a></li> <li><a href="/wiki/SU_Cygni" title="SU Cygni">SU</a></li> <li><a href="/wiki/TT_Cygni" title="TT Cygni">TT</a></li> <li><a href="/wiki/AZ_Cygni" title="AZ Cygni">AZ</a></li> <li><a href="/wiki/BC_Cygni" title="BC Cygni">BC</a></li> <li><a href="/wiki/BI_Cygni" title="BI Cygni">BI</a></li> <li><a href="/wiki/CH_Cygni" title="CH Cygni">CH</a></li> <li><a href="/wiki/KY_Cygni" title="KY Cygni">KY</a></li> <li><a href="/wiki/V380_Cygni" title="V380 Cygni">V380</a></li> <li><a href="/wiki/V389_Cygni" title="V389 Cygni">V389</a></li> <li><a href="/wiki/V404_Cygni" title="V404 Cygni">V404</a></li> <li><a href="/wiki/V476_Cygni" title="V476 Cygni">V476</a></li> <li><a href="/wiki/V1027_Cygni" title="V1027 Cygni">V1027</a></li> <li><a href="/wiki/V1057_Cygni" title="V1057 Cygni">V1057</a></li> <li><a href="/wiki/HR_7484" title="HR 7484">V1143</a></li> <li><a href="/wiki/V1191_Cygni" title="V1191 Cygni">V1191</a></li> <li><a href="/wiki/V1334_Cygni" title="V1334 Cygni">V1334</a></li> <li><a href="/wiki/NML_Cygni" title="NML Cygni">V1489</a></li> <li><a href="/wiki/V1500_Cygni" title="V1500 Cygni">V1500</a></li> <li><a href="/wiki/V1668_Cygni" title="V1668 Cygni">V1668</a></li> <li><a href="/wiki/V1794_Cygni" title="V1794 Cygni">V1794</a></li> <li><a href="/wiki/V1974_Cygni" title="V1974 Cygni">V1974</a></li> <li><a href="/wiki/KPD_1930%2B2752" title="KPD 1930+2752">V2214</a></li> <li><a href="/wiki/IRAS_19475%2B3119" title="IRAS 19475+3119">V2513</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><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_189276" title="HD 189276">7633</a></li> <li><a href="/wiki/HD_193322" title="HD 193322">7767</a></li> <li><a href="/wiki/HD_197036" title="HD 197036">7912</a></li> <li><a href="/wiki/HD_203857" title="HD 203857">8193</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><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_185269" title="HD 185269">185269</a></li> <li><a href="/wiki/HD_185351" title="HD 185351">185351</a></li> <li><a href="/wiki/HD_187123" title="HD 187123">187123</a></li> <li><a href="/wiki/HD_188753" title="HD 188753">188753</a></li> <li><a href="/wiki/HD_190655" title="HD 190655">190655</a></li> <li><a href="/wiki/HD_191612" title="HD 191612">191612</a></li> <li><a href="/wiki/HD_191806" title="HD 191806">191806</a></li> <li><a href="/wiki/HD_197037" title="HD 197037">197037</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Gliese_Catalogue_of_Nearby_Stars" title="Gliese Catalogue of Nearby Stars">Gliese</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/Gliese_777" title="Gliese 777">777</a></li> <li><a href="/wiki/Gliese_806" title="Gliese 806">806</a></li> <li><a href="/wiki/GJ_1245" title="GJ 1245">1245</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/List_of_exoplanets_discovered_using_the_Kepler_space_telescope" class="mw-redirect" title="List of exoplanets discovered using the Kepler space telescope">Kepler</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/HAT-P-7" title="HAT-P-7">2</a></li> <li><a href="/wiki/HAT-P-11" title="HAT-P-11">3</a></li> <li><a href="/wiki/Kepler-5" title="Kepler-5">5</a></li> <li><a href="/wiki/Kepler-6" title="Kepler-6">6</a></li> <li><a href="/wiki/Kepler-11" title="Kepler-11">11</a></li> <li><a href="/wiki/Kepler-15" title="Kepler-15">15</a></li> <li><a href="/wiki/Kepler-16" title="Kepler-16">16</a></li> <li><a href="/wiki/Kepler-17" title="Kepler-17">17</a></li> <li><a href="/wiki/Kepler-18" title="Kepler-18">18</a></li> <li><a href="/wiki/Kepler-22" title="Kepler-22">22</a></li> <li><a href="/wiki/Kepler-23" title="Kepler-23">23</a></li> <li><a href="/wiki/Kepler-27" title="Kepler-27">27</a></li> <li><a href="/wiki/Kepler-28" title="Kepler-28">28</a></li> <li><a href="/wiki/Kepler-29" title="Kepler-29">29</a></li> <li><a href="/wiki/Kepler-31" title="Kepler-31">31</a></li> <li><a href="/wiki/Kepler-32" title="Kepler-32">32</a></li> <li><a href="/wiki/Kepler-33" title="Kepler-33">33</a></li> <li><a href="/wiki/Kepler-34" title="Kepler-34">34</a></li> <li><a href="/wiki/Kepler-35" title="Kepler-35">35</a></li> <li><a href="/wiki/Kepler-36" title="Kepler-36">36</a></li> <li><a href="/wiki/Kepler-39" title="Kepler-39">39</a></li> <li><a href="/wiki/Kepler-40" title="Kepler-40">40</a></li> <li><a href="/wiki/Kepler-41" title="Kepler-41">41</a></li> <li><a href="/wiki/Kepler-42" title="Kepler-42">42</a></li> <li><a href="/wiki/Kepler-43" title="Kepler-43">43</a></li> <li><a href="/wiki/Kepler-44" title="Kepler-44">44</a></li> <li><a href="/wiki/Kepler-45" title="Kepler-45">45</a></li> <li><a href="/wiki/Kepler-47" title="Kepler-47">47</a></li> <li><a href="/wiki/Kepler-51" title="Kepler-51">51</a></li> <li><a href="/wiki/Kepler-56" title="Kepler-56">56</a></li> <li><a href="/wiki/Kepler-61" title="Kepler-61">61</a></li> <li><a href="/wiki/Kepler-63" title="Kepler-63">63</a></li> <li><a href="/wiki/PH1" class="mw-redirect" title="PH1">64 (PH1)</a></li> <li><a href="/wiki/Kepler-66" title="Kepler-66">66</a></li> <li><a href="/wiki/Kepler-67" title="Kepler-67">67</a></li> <li><a href="/wiki/Kepler-68" title="Kepler-68">68</a></li> <li><a href="/wiki/Kepler-69" title="Kepler-69">69</a></li> <li><a href="/wiki/Kepler-70" title="Kepler-70">70</a></li> <li><a href="/wiki/Kepler-78" title="Kepler-78">78</a></li> <li><a href="/wiki/Kepler-80" title="Kepler-80">80</a></li> <li><a href="/wiki/Kepler-84" title="Kepler-84">84</a></li> <li><a href="/wiki/PH2" title="PH2">86 (PH2)</a></li> <li><a href="/wiki/Kepler-87" title="Kepler-87">87</a></li> <li><a href="/wiki/Kepler-89" title="Kepler-89">89</a></li> <li><a href="/wiki/Kepler-107" title="Kepler-107">107</a></li> <li><a href="/wiki/Kepler-167" title="Kepler-167">167</a></li> <li><a href="/wiki/Kepler-182" title="Kepler-182">182</a></li> <li><a href="/wiki/Kepler-186" title="Kepler-186">186</a></li> <li><a href="/wiki/Kepler-223" title="Kepler-223">223</a></li> <li><a href="/wiki/Kepler-289" title="Kepler-289">289</a></li> <li><a href="/wiki/Kepler-371" title="Kepler-371">371</a></li> <li><a href="/wiki/Kepler-385" title="Kepler-385">385</a></li> <li><a href="/wiki/Kepler-411" title="Kepler-411">411</a></li> <li><a href="/wiki/Kepler-419" title="Kepler-419">419</a></li> <li><a href="/wiki/Kepler-432" title="Kepler-432">432</a></li> <li><a href="/wiki/Kepler-445" title="Kepler-445">445</a></li> <li><a href="/wiki/2MASS_J19383260%2B4603591" class="mw-redirect" title="2MASS J19383260+4603591">451</a></li> <li><a href="/wiki/Kepler-452" title="Kepler-452">452</a></li> <li><a href="/wiki/Kepler-560" class="mw-redirect" title="Kepler-560">560</a></li> <li><a href="/wiki/Kepler-737" title="Kepler-737">737</a></li> <li><a href="/wiki/Kepler-1229" title="Kepler-1229">1229</a></li> <li><a href="/wiki/Kepler-1520" title="Kepler-1520">1520</a></li> <li><a href="/wiki/Kepler-1625" title="Kepler-1625">1625</a></li> <li><a href="/wiki/Kepler-1649" title="Kepler-1649">1649</a></li> <li><a href="/wiki/Kepler-1708" class="mw-redirect" title="Kepler-1708">1708</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Wolf-Rayet_star" class="mw-redirect" title="Wolf-Rayet star">WR</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/WR_133" title="WR 133">133</a></li> <li><a href="/wiki/WR_134" title="WR 134">134</a></li> <li><a href="/wiki/WR_135" title="WR 135">135</a></li> <li><a href="/wiki/WR_136" title="WR 136">136</a></li> <li><a href="/wiki/WR_137" title="WR 137">137</a></li> <li><a href="/wiki/WR_138a" title="WR 138a">138a</a></li> <li><a href="/wiki/WR_140" title="WR 140">140</a></li> <li><a href="/wiki/WR_142" title="WR 142">142</a></li> <li><a href="/wiki/WR_147" title="WR 147">147</a></li> <li><a href="/wiki/WR_148" title="WR 148">148</a></li> <li><a href="/wiki/WR_150" title="WR 150">150</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em">Other</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/AFGL_2591" title="AFGL 2591">AFGL 2591</a></li> <li><a href="/wiki/BD%2B40%C2%B0_4210" class="mw-redirect" title="BD+40° 4210">BD+40° 4210</a></li> <li><a href="/wiki/BD%2B43_3654" title="BD+43 3654">BD+43 3654</a></li> <li><a href="/wiki/Cygnus_OB2-8A" title="Cygnus OB2-8A">Cygnus OB2 #8A</a></li> <li><a href="/wiki/Cygnus_OB2-12" title="Cygnus OB2-12">Cygnus OB2 #12</a></li> <li><a href="/wiki/Cygnus_X-1" title="Cygnus X-1">Cygnus X-1</a></li> <li><a href="/wiki/Cygnus_X-3" title="Cygnus X-3">Cygnus X-3</a></li> <li><a href="/wiki/G79.29%2B0.46" title="G79.29+0.46">G79.29+0.46</a></li> <li><a href="/wiki/G_208-44/208-45" class="mw-redirect" title="G 208-44/208-45">G 208-44</a></li> <li><a href="/wiki/G_208-44/208-45" class="mw-redirect" title="G 208-44/208-45">G 208-45</a></li> <li><a href="/wiki/GSC_03949-00967" title="GSC 03949-00967">GSC 03949-00967</a></li> <li><a href="/wiki/HAT-P-17" title="HAT-P-17">HAT-P-17</a></li> <li><a href="/wiki/KELT-9b#Host_star" title="KELT-9b">KELT-9</a></li> <li><a href="/wiki/KELT-20" title="KELT-20">KELT-20</a></li> <li><a href="/wiki/Tabby%27s_Star" title="Tabby's Star">KIC 8462852</a></li> <li><a href="/wiki/KIC_9832227" title="KIC 9832227">KIC 9832227</a></li> <li><a href="/wiki/KIC_9970396" title="KIC 9970396">KIC 9970396</a></li> <li><a href="/wiki/KIC_11026764" class="mw-redirect" title="KIC 11026764">KIC 11026764</a></li> <li><a href="/wiki/KIC_11145123" title="KIC 11145123">KIC 11145123</a></li> <li><a href="/wiki/KOI-5" title="KOI-5">KOI-5</a></li> <li><a href="/wiki/KOI-74" title="KOI-74">KOI-74</a></li> <li><a href="/wiki/KOI-81" title="KOI-81">KOI-81</a></li> <li><a href="/wiki/KOI-256" title="KOI-256">KOI-256</a></li> <li><a href="/wiki/MWC_349" title="MWC 349">MWC 349</a></li> <li><a href="/wiki/N6946-BH1" title="N6946-BH1">N6946-BH1</a></li> <li><a href="/wiki/PSR_J2032%2B4127" title="PSR J2032+4127">PSR J2032+4127</a></li> <li><a href="/wiki/SPECULOOS-3" title="SPECULOOS-3">SPECULOOS-3</a></li> <li><a href="/wiki/W75N(B)-VLA2" title="W75N(B)-VLA2">W75N(B)-VLA2</a></li> <li><a href="/wiki/WASP-48" title="WASP-48">WASP-48</a></li> <li><a href="/wiki/WISE_J2000%2B3629" title="WISE J2000+3629">WISE J2000+3629</a></li> <li><a href="/wiki/Wolf_1069" title="Wolf 1069">Wolf 1069</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Star_cluster" title="Star cluster">Star<br />clusters</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Stellar_association" title="Stellar association">Association</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/Cygnus_OB2" title="Cygnus OB2">Cygnus OB2</a></li> <li><a href="/wiki/Cygnus_OB7" title="Cygnus OB7">Cygnus OB7</a></li> <li><a href="/wiki/Cygnus_OB9" title="Cygnus OB9">Cygnus OB9</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Open_cluster" title="Open cluster">Open</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/Berkeley_86" title="Berkeley 86">Berkeley 86</a></li> <li><a href="/wiki/DR_6" title="DR 6">DR 6</a></li> <li><a href="/wiki/IC_5146" title="IC 5146">IC 5146</a></li> <li><a href="/wiki/Messier_29" title="Messier 29">Messier 29</a></li> <li><a href="/wiki/Messier_39" title="Messier 39">Messier 39</a></li> <li><a href="/wiki/NGC_6811" title="NGC 6811">NGC 6811</a></li> <li><a href="/wiki/NGC_6819" title="NGC 6819">NGC 6819</a></li> <li><a href="/wiki/NGC_6834" title="NGC 6834">NGC 6834</a></li> <li><a href="/wiki/NGC_6866" title="NGC 6866">NGC 6866</a></li> <li><a href="/wiki/NGC_6871" title="NGC 6871">NGC 6871</a></li> <li><a href="/wiki/NGC_6910" title="NGC 6910">NGC 6910</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Molecular_cloud" title="Molecular cloud">Molecular<br />clouds</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cygnus_Molecular_Nebula_Complex" title="Cygnus Molecular Nebula Complex">Cygnus Molecular Nebula Complex</a></li> <li><a href="/wiki/Cygnus_X_(star_complex)" title="Cygnus X (star complex)">Cygnus X</a> <small>(including <a href="/wiki/DR_21" title="DR 21">DR 21</a>)</small></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Nebula" title="Nebula">Nebulae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Dark_nebula" title="Dark nebula">Dark</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/Barnard_146" class="mw-redirect" title="Barnard 146">Barnard 146</a></li> <li><a href="/wiki/Barnard_147" title="Barnard 147">Barnard 147</a></li> <li><a href="/wiki/IC_5146" title="IC 5146">IC 5146</a></li> <li><a href="/wiki/L1014" title="L1014">L1014</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/H_II_region" title="H II region">H II</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/NGC_6914" title="NGC 6914">NGC 6914</a></li> <li><a href="/wiki/North_America_Nebula" title="North America Nebula">North America Nebula</a></li> <li><a href="/wiki/Pelican_Nebula" title="Pelican Nebula">Pelican Nebula</a></li> <li><a href="/wiki/Sadr_Region" title="Sadr Region">Sadr Region</a></li> <li><a href="/wiki/Sh2-101" class="mw-redirect" title="Sh2-101">Sh2-101</a></li> <li><a href="/wiki/Sh2-106" class="mw-redirect" title="Sh2-106">Sh2-106</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Planetary_nebula" title="Planetary nebula">Planetary</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/Abell_78" title="Abell 78">Abell 78</a></li> <li><a href="/wiki/Egg_Nebula" title="Egg Nebula">Egg Nebula</a></li> <li><a href="/wiki/IRAS_19475%2B3119" title="IRAS 19475+3119">IRAS 19475+3119</a></li> <li><a href="/wiki/IRAS_20324%2B4057" title="IRAS 20324+4057">IRAS 20324+4057</a></li> <li><a href="/wiki/Kronberger_61" title="Kronberger 61">Kronberger 61</a></li> <li><a href="/wiki/M1-92" title="M1-92">M1-92</a></li> <li><a href="/wiki/NGC_6826" title="NGC 6826">NGC 6826</a></li> <li><a href="/wiki/NGC_6881" title="NGC 6881">NGC 6881</a></li> <li><a href="/wiki/NGC_6884" title="NGC 6884">NGC 6884</a></li> <li><a href="/wiki/NGC_7008" title="NGC 7008">NGC 7008</a></li> <li><a href="/wiki/NGC_7026" title="NGC 7026">NGC 7026</a></li> <li><a href="/wiki/NGC_7027" title="NGC 7027">NGC 7027</a></li> <li><a href="/wiki/NGC_7048" title="NGC 7048">NGC 7048</a></li> <li><a href="/wiki/Soap_Bubble_Nebula" title="Soap Bubble Nebula">Soap Bubble Nebula</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Wolf%E2%80%93Rayet_nebula" title="Wolf–Rayet nebula">WR</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/Crescent_Nebula" title="Crescent Nebula">Crescent Nebula</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/Supernova_remnant" title="Supernova remnant">SNR</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/Cygnus_Loop" title="Cygnus Loop">Cygnus Loop</a> <small>(including <a href="/wiki/Veil_Nebula" title="Veil Nebula">Veil Nebula</a>)</small></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Galaxy" title="Galaxy">Galaxies</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/New_General_Catalogue" title="New General Catalogue">NGC</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/NGC_6801" title="NGC 6801">6801</a></li> <li><a href="/wiki/NGC_6946" title="NGC 6946">6946</a></li> <li><a href="/wiki/NGC_7013" title="NGC 7013">7013</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em">Other</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/3C_438" title="3C 438">3C 438</a></li> <li><a href="/wiki/4C_%2B48.48" title="4C +48.48">4C +48.48</a></li> <li><a href="/wiki/Cygnus_A" title="Cygnus A">Cygnus A</a></li> <li><a href="/wiki/ZTF_J203349.8%2B322901.1" class="mw-redirect" title="ZTF J203349.8+322901.1">ZTF J203349.8+322901.1</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Exoplanet" title="Exoplanet">Exoplanets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6em"><a href="/wiki/List_of_exoplanets_discovered_by_the_Kepler_space_telescope" title="List of exoplanets discovered by the Kepler space telescope">Kepler</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/HAT-P-7b" title="HAT-P-7b">2b</a></li> <li><a href="/wiki/HAT-P-11b" title="HAT-P-11b">3b</a></li> <li><a href="/wiki/HAT-P-11c" class="mw-redirect" title="HAT-P-11c">3c</a></li> <li><a href="/wiki/Kepler-5b" title="Kepler-5b">5b</a></li> <li><a href="/wiki/Kepler-6b" title="Kepler-6b">6b</a></li> <li><a href="/wiki/Kepler-11b" title="Kepler-11b">11b</a></li> <li><a href="/wiki/Kepler-15b" title="Kepler-15b">15b</a></li> <li><a href="/wiki/Kepler-16b" title="Kepler-16b">16b</a></li> <li><a href="/wiki/Kepler-17b" title="Kepler-17b">17b</a></li> <li><a href="/wiki/Kepler-22b" title="Kepler-22b">22b</a></li> <li><a href="/wiki/Kepler-23b" title="Kepler-23b">23b</a></li> <li><a href="/wiki/Kepler-28b" title="Kepler-28b">28b</a></li> <li><a href="/wiki/Kepler-32b" title="Kepler-32b">32b</a></li> <li><a href="/wiki/Kepler-33b" title="Kepler-33b">33b</a></li> <li><a href="/wiki/Kepler-34b" title="Kepler-34b">34b</a></li> <li><a href="/wiki/Kepler-36b" title="Kepler-36b">36b</a></li> <li><a href="/wiki/Kepler-39b" title="Kepler-39b">39b</a></li> <li><a href="/wiki/Kepler-40b" title="Kepler-40b">40b</a></li> <li><a href="/wiki/Kepler-41b" title="Kepler-41b">41b</a></li> <li><a href="/wiki/Kepler-47b" title="Kepler-47b">47b</a></li> <li><a href="/wiki/Kepler-56b" title="Kepler-56b">56b</a></li> <li><a href="/wiki/Kepler-61b" title="Kepler-61b">61b</a></li> <li><a href="/wiki/PH1b" title="PH1b">64b (PH1b)</a></li> <li><a href="/wiki/Kepler-68b" title="Kepler-68b">68b</a></li> <li><a href="/wiki/Kepler-69b" class="mw-redirect" title="Kepler-69b">69b</a></li> <li><a href="/wiki/Kepler-70b" class="mw-redirect" title="Kepler-70b">70b</a></li> <li><a href="/wiki/Kepler-78b" title="Kepler-78b">78b</a></li> <li><a href="/wiki/Kepler-87c" title="Kepler-87c">87c</a></li> <li><a href="/wiki/Kepler-186b" title="Kepler-186b">186b</a></li> <li><a href="/wiki/Kepler-186e" title="Kepler-186e">e</a></li> <li><a href="/wiki/Kepler-186f" title="Kepler-186f">f</a></li> <li><a href="/wiki/Kepler-371b" title="Kepler-371b">371b</a></li> <li><a href="/wiki/Kepler-371c" title="Kepler-371c">c</a></li> <li><a href="/wiki/Kepler-409b" title="Kepler-409b">409b</a></li> <li><a href="/wiki/Kepler-419b" title="Kepler-419b">419b</a></li> <li><a href="/wiki/Kepler-432b" title="Kepler-432b">432b</a></li> <li><a href="/wiki/Kepler-451b" class="mw-redirect" title="Kepler-451b">451b</a></li> <li><a href="/wiki/Kepler-452b" title="Kepler-452b">452b</a></li> <li><a href="/wiki/Kepler-560b" title="Kepler-560b">560b</a></li> <li><a href="/wiki/Kepler-737b" title="Kepler-737b">737b</a></li> <li><a href="/wiki/Kepler-1229b" title="Kepler-1229b">1229b</a></li> <li><a href="/wiki/Kepler-1520b" title="Kepler-1520b">1520b</a></li> <li><a href="/wiki/Kepler-1625b" title="Kepler-1625b">1625b</a></li> <li><a href="/wiki/Kepler-1652b" title="Kepler-1652b">1652b</a></li> <li><a href="/wiki/Kepler-1658b" title="Kepler-1658b">1658b</a></li> <li><a href="/wiki/Kepler-1649b" title="Kepler-1649b">1649b</a></li> <li><a href="/wiki/Kepler-1649c" title="Kepler-1649c">c</a></li> <li><a href="/wiki/Kepler-1708b" title="Kepler-1708b">1708b</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6em">Other</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/HIP_99770_b" title="HIP 99770 b">b<sup>3</sup> Cygni b</a></li> <li><a href="/wiki/HD_185269_b" title="HD 185269 b">HD 185269 b</a></li> <li><a href="/wiki/HD_187123_b" title="HD 187123 b">HD 187123 b</a></li> <li><a href="/wiki/HD_187123_c" title="HD 187123 c">c</a></li> <li><a href="/wiki/HD_191806_b" title="HD 191806 b">HD 191806 b</a></li> <li><a href="/wiki/KELT-9b" title="KELT-9b">KELT-9b</a></li> <li><a href="/wiki/KELT-20b" title="KELT-20b">KELT-20b</a></li> <li><a href="/wiki/TrES-5b" title="TrES-5b">TrES-5b</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Exomoon" title="Exomoon">Exomoons</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Kepler70" scope="row" class="navbox-group" style="width:6em"><a href="/wiki/List_of_exoplanets_discovered_by_the_Kepler_space_telescope" title="List of exoplanets discovered by the Kepler space telescope">Kepler</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/Kepler-1625b_I" title="Kepler-1625b I">1625b I</a></li> <li><a href="/wiki/Kepler-1708b_I" class="mw-redirect" title="Kepler-1708b I">1708b I</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div>    </div><noscript><img src="https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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