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<a class="vector-toc-link" href="#Black_hole_observation"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Black hole observation</span> </div> </a> <ul id="toc-Black_hole_observation-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" 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.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: #ddd;">PKS 2131-021</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Image_of_PKS_2131-021_taken_by_DESI_Legacy_Surveys.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Image_of_PKS_2131-021_taken_by_DESI_Legacy_Surveys.png/290px-Image_of_PKS_2131-021_taken_by_DESI_Legacy_Surveys.png" decoding="async" width="290" height="232" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Image_of_PKS_2131-021_taken_by_DESI_Legacy_Surveys.png/435px-Image_of_PKS_2131-021_taken_by_DESI_Legacy_Surveys.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Image_of_PKS_2131-021_taken_by_DESI_Legacy_Surveys.png/580px-Image_of_PKS_2131-021_taken_by_DESI_Legacy_Surveys.png 2x" data-file-width="797" data-file-height="637" /></a></span><div class="infobox-caption">PKS 2131-021 as seen with <a href="/wiki/Dark_Energy_Spectroscopic_Instrument" title="Dark Energy Spectroscopic Instrument">DESI Legacy Surveys</a></div></td></tr><tr><th colspan="2" class="infobox-header" style="background: #ddd;">Observation data (<a href="/wiki/J2000.0" class="mw-redirect" title="J2000.0">J2000.0</a> <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/Constellation" title="Constellation">Constellation</a></th><td class="infobox-data"><a href="/wiki/Aquarius_(constellation)" title="Aquarius (constellation)">Aquarius</a></td></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">21<sup>h</sup> 34<sup>m</sup> 10.31<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">−01° 53′ 17.24″</td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Redshift" title="Redshift">Redshift</a></th><td class="infobox-data">1.285<sup id="cite_ref-NED_1-0" class="reference"><a href="#cite_note-NED-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Radial_velocity" title="Radial velocity">Heliocentric radial velocity</a></th><td class="infobox-data">385,233 <a href="/wiki/Kilometer_per_second" class="mw-redirect" title="Kilometer per second">km/s</a><sup id="cite_ref-NED_1-1" class="reference"><a href="#cite_note-NED-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Apparent_magnitude" title="Apparent magnitude">Apparent magnitude</a> <small title="in visual light">(V)</small></th><td class="infobox-data">18.67<sup id="cite_ref-NED_1-2" class="reference"><a href="#cite_note-NED-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: #ddd;">Characteristics</th></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Galaxy_morphological_classification" title="Galaxy morphological classification">Type</a></th><td class="infobox-data">FRSQ;BLLAC, HPQ<sup id="cite_ref-NED_1-3" class="reference"><a href="#cite_note-NED-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: #ddd;">Other designations</th></tr><tr><td colspan="2" class="infobox-full-data"><a href="/wiki/Fourth_Cambridge_Survey" title="Fourth Cambridge Survey">4C</a> -02.81, <a href="/wiki/Molonglo_Reference_Catalogue_of_Radio_Sources" title="Molonglo Reference Catalogue of Radio Sources">MRC</a> 2131-021, <a href="/wiki/Principal_Galaxies_Catalogue" title="Principal Galaxies Catalogue">PGC</a> 2818139, OX -053, <a href="/wiki/International_Celestial_Reference_Frame" class="mw-redirect" title="International Celestial Reference Frame">IRCF</a> J213410.3-015317, 2FGL J2133.8-0154</td></tr></tbody></table> <p><b>PKS 2131-021</b> is a <a href="/wiki/Quasar" title="Quasar">quasar</a> and a <a href="/wiki/BL_Lacertae_object" title="BL Lacertae object">BL Lacerate object</a>,<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> producing an <a href="/wiki/Astrophysical_jet" title="Astrophysical jet">astrophysical jet</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> lt is located in the constellation <a href="/wiki/Aquarius_(constellation)" title="Aquarius (constellation)">Aquarius</a> and classified as a <a href="/wiki/Blazar" title="Blazar">blazar</a>, a type of <a href="/wiki/Active_galactic_nucleus" title="Active galactic nucleus">active galactic nucleus</a> whose <a href="/wiki/Relativistic_jet" class="mw-redirect" title="Relativistic jet">relativistic jet</a> points in the direction towards <a href="/wiki/Earth" title="Earth">Earth</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Redshift_estimation_for_PKS_2131-021">Redshift estimation for PKS 2131-021</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=PKS_2131-021&action=edit&section=1" title="Edit section: Redshift estimation for PKS 2131-021"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Redshift" title="Redshift">redshift</a> of PKS 2131-021 is 1.285, estimating the quasar to be located about 8.5 billion <a href="/wiki/Light-year" title="Light-year">light-years</a> away.<sup id="cite_ref-NED_1-4" class="reference"><a href="#cite_note-NED-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> For more consistency according to researchers, they applied a <a href="/wiki/Cosmology" title="Cosmology">cosmological</a> parameters of <i>H</i>0 = 71 km s−1 Mpc−1, Ωm = 0.27, ΩΛ = 0.73.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> On this model, the <a href="/wiki/Comoving_and_proper_distances" title="Comoving and proper distances">comoving</a> coordinate distance of PKS 2131−021 is 3.97 Gpc, with an angular <a href="/wiki/Diameter" title="Diameter">diameter</a> distance of 1.74 Gpc, and <a href="/wiki/Luminosity" title="Luminosity">luminosity</a> distance of 9.08 Gpc.<sup id="cite_ref-:0_5-0" class="reference"><a href="#cite_note-:0-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Black_hole_observation">Black hole observation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=PKS_2131-021&action=edit&section=2" title="Edit section: Black hole observation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Observations of its radio emission spanning a 45-year duration show epochs of periodic brightness variations. These nearly <a href="/wiki/Sinusoidal" class="mw-redirect" title="Sinusoidal">sinusoidal</a> brightness changes have been interpreted as evidence of orbital motion of a <a href="/wiki/Binary_black_hole" title="Binary black hole">binary black hole</a>.<sup id="cite_ref-:0_5-1" class="reference"><a href="#cite_note-:0-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The orbital separation of the two black holes is inferred to be 200 to 2000 <a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a>.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The periodic variability in the <a href="/wiki/Light_curve" title="Light curve">light curve</a> indicates that the pair orbit each other about every two years, at a distance so close that they will merge in about 10,000 years (as viewed from the Earth).<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<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=PKS_2131-021&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Supermassive_black_hole" title="Supermassive black hole">Supermassive black hole</a></li> <li><a href="/wiki/NGC_7727" title="NGC 7727">NGC 7727</a></li> <li><a href="/wiki/OJ_287" title="OJ 287">OJ 287</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=PKS_2131-021&action=edit&section=4" 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 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template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:2022_in_space" title="Special:EditPage/Template:2022 in space"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="2022_in_space" style="font-size:114%;margin:0 4em">2022 in space</div></th></tr><tr><td class="navbox-abovebelow" colspan="3"><div> <ul><li><div style="float: left;"> « <a href="/wiki/Template:2021_in_space" title="Template:2021 in space">2021</a></div> <div style="float: right;"><a href="/wiki/Template:2023_in_space" title="Template:2023 in space">2023</a> »</div></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/2022_in_spaceflight" title="2022 in spaceflight">Space probe launches</a> <span typeof="mw:File"><a href="/wiki/Category:Space_probes_launched_in_2022" title="Category:Space probes launched in 2022"><img alt="Space probes launched in 2022" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/15px-Symbol_category_class.svg.png" decoding="async" width="15" height="15" 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/30px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/CAPSTONE" title="CAPSTONE">CAPSTONE</a> (June 2022)</li> <li><a href="/wiki/Danuri" title="Danuri">Danuri</a> (August 2022)</li> <li><a href="/wiki/Artemis_I" title="Artemis I">Artemis I</a> (November 2022) <ul><li><a href="/wiki/ArgoMoon" title="ArgoMoon">ArgoMoon</a></li> <li><a href="/wiki/EQUULEUS" title="EQUULEUS">EQUULEUS</a></li> <li><a href="/wiki/Lunar_Polar_Hydrogen_Mapper" title="Lunar Polar Hydrogen Mapper">LunaH-Map</a></li> <li><a href="/wiki/Lunar_IceCube" title="Lunar IceCube">Lunar IceCube</a></li> <li><a href="/wiki/Near-Earth_Asteroid_Scout" title="Near-Earth Asteroid Scout">NEA Scout</a></li> <li><a href="/wiki/OMOTENASHI" title="OMOTENASHI">OMOTENASHI</a></li> <li><a href="/wiki/LunIR" title="LunIR">LunIR</a></li></ul></li> <li><a href="/wiki/Hakuto-R" class="mw-redirect" title="Hakuto-R">Hakuto-R Mission 1</a> / <a href="/wiki/Emirates_Lunar_Mission" title="Emirates Lunar Mission">Emirates Lunar Mission</a> / <a href="/wiki/Lunar_Flashlight" title="Lunar Flashlight">Lunar Flashlight</a> (December 2022)</li></ul> </div></td><td class="noviewer navbox-image" rowspan="6" style="width:1px;padding:0 0 0 2px;padding-left: 0.5em;"><div><span typeof="mw:File"><a href="/wiki/File:Webb%27s_First_Deep_Field.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Webb%27s_First_Deep_Field.jpg/125px-Webb%27s_First_Deep_Field.jpg" decoding="async" width="125" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Webb%27s_First_Deep_Field.jpg/188px-Webb%27s_First_Deep_Field.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Webb%27s_First_Deep_Field.jpg/250px-Webb%27s_First_Deep_Field.jpg 2x" data-file-width="4537" data-file-height="4630" /></a></span><br /><span typeof="mw:File"><a href="/wiki/File:Stacked_image_of_Dimorphos_true_orientation.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Stacked_image_of_Dimorphos_true_orientation.jpg/125px-Stacked_image_of_Dimorphos_true_orientation.jpg" decoding="async" width="125" height="125" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Stacked_image_of_Dimorphos_true_orientation.jpg/188px-Stacked_image_of_Dimorphos_true_orientation.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Stacked_image_of_Dimorphos_true_orientation.jpg/250px-Stacked_image_of_Dimorphos_true_orientation.jpg 2x" data-file-width="5792" data-file-height="5792" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Impact_event" title="Impact event">Impact events</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><span class="nowrap"><a href="/wiki/2022_EB5" title="2022 EB5">2022 EB<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">5</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_WJ1" title="2022 WJ1">2022 WJ<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">1</span></span></a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Selected <a href="/wiki/Near-Earth_object" title="Near-Earth object">NEOs</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_asteroid_close_approaches_to_Earth_in_2022" title="List of asteroid close approaches to Earth in 2022">Asteroid close approaches</a></li> <li><span class="nowrap"><a href="/wiki/2020_AP1" title="2020 AP1">2020 AP<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">1</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_AE1" title="2022 AE1">2022 AE<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">1</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_AP7" title="2022 AP7">2022 AP<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">7</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_BX1" title="2022 BX1">2022 BX<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">1</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/(7482)_1994_PC1" title="(7482) 1994 PC1">(7482) 1994 PC<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">1</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2015_DR215" title="2015 DR215">2015 DR<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">215</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_FD1" title="2022 FD1">2022 FD<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">1</span></span></a></span></li> <li><a href="/wiki/(7335)_1989_JA" title="(7335) 1989 JA">(7335) 1989 JA</a></li> <li><span class="nowrap"><a href="/wiki/2022_NX1" title="2022 NX1">2022 NX<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">1</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_QX4" title="2022 QX4">2022 QX<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">4</span></span></a></span></li> <li><a href="/wiki/161989_Cacus" title="161989 Cacus">161989 Cacus</a></li> <li><a href="/wiki/65803_Didymos" title="65803 Didymos">65803 Didymos</a></li> <li><span class="nowrap"><a href="/wiki/2022_UR4" title="2022 UR4">2022 UR<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">4</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_RM4" title="2022 RM4">2022 RM<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">4</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2005_LW3" title="2005 LW3">2005 LW<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">3</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2022_WM7" title="2022 WM7">2022 WM<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">7</span></span></a></span></li> <li><span class="nowrap"><a href="/wiki/2010_XC15" title="2010 XC15">2010 XC<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">15</span></span></a></span></li> <li><a href="/wiki/2022_YG" title="2022 YG">2022 YG</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Discoveries</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><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/2021_LL37" title="2021 LL37">2021 LL<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">37</span></span></a></span> (TNO)</li> <li><span class="nowrap"><a href="/wiki/2021_RR205" title="2021 RR205">2021 RR<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">205</span></span></a></span> (TNO)</li> <li><a href="/wiki/Alcyoneus_(galaxy)" title="Alcyoneus (galaxy)">Alcyoneus (galaxy)</a></li> <li><a href="/wiki/CEERS-93316" title="CEERS-93316">CEERS-93316</a></li> <li><a href="/wiki/Gaia_BH1" title="Gaia BH1">Gaia BH1</a></li> <li><a href="/wiki/GLASS-z12" title="GLASS-z12">GLASS-z12</a></li> <li><a href="/wiki/GNz7q" title="GNz7q">GNz7q</a></li> <li><a href="/wiki/GRB_221009A" title="GRB 221009A">GRB 221009A</a></li> <li><a href="/wiki/HD1_(galaxy)" class="mw-redirect" title="HD1 (galaxy)">HD1 (galaxy)</a></li> <li><a href="/wiki/J1144%E2%80%934308" title="J1144–4308">J1144–4308</a></li> <li><a href="/wiki/JADES-GS-z13-0" title="JADES-GS-z13-0">JADES-GS-z13-0</a></li> <li><a href="/wiki/OGLE-2011-BLG-0462" title="OGLE-2011-BLG-0462">OGLE-2011-BLG-0462</a></li> <li><a class="mw-selflink selflink">PKS 2131-021</a></li> <li><a href="/wiki/PSR_J0901%E2%80%934046" title="PSR J0901–4046">PSR J0901–4046</a></li> <li><a href="/wiki/PSR_J0952%E2%80%930607" title="PSR J0952–0607">PSR J0952–0607</a></li> <li><a href="/wiki/Sagittarius_A*" title="Sagittarius A*">Sagittarius A*</a> imaged</li> <li><a href="/wiki/S4716" title="S4716">S4716</a></li> <li><a href="/wiki/SN_2022jli" title="SN 2022jli">SN 2022jli</a></li> <li><a href="/wiki/VFTS_243" title="VFTS 243">VFTS 243</a></li> <li><a href="/wiki/Webb%27s_First_Deep_Field" title="Webb's First Deep Field">Webb's First Deep Field</a> (<a href="/wiki/SMACS_J0723.3%E2%80%937327" class="mw-redirect" title="SMACS J0723.3–7327">SMACS J0723.3–7327</a>)</li> <li><a href="/wiki/WD_1054%E2%80%93226" title="WD 1054–226">WD 1054–226</a></li> <li><a href="/wiki/WHL0137-LS" title="WHL0137-LS">WHL0137-LS</a></li> <li><a href="/wiki/ZTF_J1813%2B4251" title="ZTF J1813+4251">ZTF J1813+4251</a></li> <li>12 <a href="/wiki/Moons_of_Jupiter" title="Moons of Jupiter">moons of Jupiter</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_exoplanets_discovered_in_2022" title="List of exoplanets discovered in 2022">Exoplanets</a> <span typeof="mw:File"><a href="/wiki/Category:Exoplanets_discovered_in_2022" title="Category:Exoplanets discovered in 2022"><img alt="Exoplanets discovered in 2022" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/15px-Symbol_category_class.svg.png" decoding="async" width="15" height="15" 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/30px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AB_Aurigae_b" title="AB Aurigae b">AB Aurigae b</a></li> <li><a href="/wiki/Carbon_dioxide" title="Carbon dioxide"><span class="nowrap">CO<sub>2</sub></span></a> on <a href="/wiki/WASP-39b" title="WASP-39b">WASP-39b</a></li> <li><a href="/wiki/Gliese_514" title="Gliese 514">Gliese 514 b</a></li> <li><a href="/wiki/Gliese_3929" class="mw-redirect" title="Gliese 3929">Gliese 3929</a> <ul><li><a href="/wiki/Gliese_3929_b" class="mw-redirect" title="Gliese 3929 b">b</a></li> <li>c</li></ul></li> <li><a href="/wiki/EQ_Pegasi" title="EQ Pegasi">Gliese 896 Ab</a></li> <li><a href="/wiki/HD_83443" title="HD 83443">HD 83443 c</a></li> <li><a href="/wiki/HD_260655" title="HD 260655">HD 260655</a> <ul><li>b</li> <li>c</li></ul></li> <li><a href="/wiki/List_of_exoplanets_discovered_in_2022" title="List of exoplanets discovered in 2022">K2-2016-BLG-0005Lb</a></li> <li><a href="/wiki/2M_1938%2B4603" class="mw-redirect" title="2M 1938+4603">Kepler-451</a> <ul><li>c</li> <li>d</li></ul></li> <li><a href="/wiki/Kepler-1708b" title="Kepler-1708b">Kepler-1708b</a> and possible <a href="/wiki/Exomoon" title="Exomoon">exomoon</a> <a href="/wiki/Kepler-1708b_I" class="mw-redirect" title="Kepler-1708b I">Kepler-1708b I</a></li> <li><a href="/wiki/LP_890-9" title="LP 890-9">LP 890-9</a> <ul><li><a href="/wiki/LP_890-9_b" class="mw-redirect" title="LP 890-9 b">b</a></li> <li><a href="/wiki/LP_890-9_c" class="mw-redirect" title="LP 890-9 c">c</a></li></ul></li> <li><a href="/wiki/Mu2_Scorpii" title="Mu2 Scorpii">Mu2 Scorpii</a> <ul><li>b</li> <li>c</li></ul></li> <li><a href="/wiki/OGLE-2018-BLG-1119Lb" class="mw-redirect" title="OGLE-2018-BLG-1119Lb">OGLE-2018-BLG-1119Lb</a></li> <li><a href="/wiki/Pi_Mensae#Planetary_system" title="Pi Mensae">Pi Mensae d</a></li> <li><a href="/wiki/Proxima_Centauri_d" title="Proxima Centauri d">Proxima Centauri d</a></li> <li><a href="/wiki/TOI-1227_b" title="TOI-1227 b">TOI-1227 b</a></li> <li><a href="/wiki/TOI-1452_b" title="TOI-1452 b">TOI-1452 b</a></li> <li><a href="/wiki/TOI-2180_b" title="TOI-2180 b">TOI-2180 b</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Comets <span typeof="mw:File"><a href="/wiki/Category:Comets_in_2022" title="Category:Comets in 2022"><img alt="Comets in 2022" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/15px-Symbol_category_class.svg.png" decoding="async" width="15" height="15" 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/30px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span></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/C/2021_O3_(PanSTARRS)" title="C/2021 O3 (PanSTARRS)">C/2021 O3 (PanSTARRS)</a></li> <li><a href="/wiki/73P/Schwassmann%E2%80%93Wachmann" title="73P/Schwassmann–Wachmann">73P/Schwassmann–Wachmann</a></li> <li><a href="/wiki/C/2017_K2_(PanSTARRS)" title="C/2017 K2 (PanSTARRS)">C/2017 K2 (PanSTARRS)</a></li> <li><a href="/wiki/C/2022_E3_(ZTF)" title="C/2022 E3 (ZTF)">C/2022 E3 (ZTF)</a></li> <li>PSP-001</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Space exploration</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Double_Asteroid_Redirection_Test" title="Double Asteroid Redirection Test">DART</a> (<a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a> impact; September 2022)</li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="3"><div> <ul><li><span class="nowrap"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Earth-moon.jpg/32px-Earth-moon.jpg" decoding="async" width="32" height="26" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Earth-moon.jpg/48px-Earth-moon.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Earth-moon.jpg/64px-Earth-moon.jpg 2x" data-file-width="3000" data-file-height="2400" /></span></span> </span><a href="/wiki/Portal:Outer_space" title="Portal:Outer space">Outer space portal</a></li> <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:2021_in_outer_space" title="Category:2021 in outer space">Category:2021 in outer space</a> — <b><a href="/wiki/Category:2022_in_outer_space" title="Category:2022 in outer space">Category:2022 in outer space</a></b> — <a href="/wiki/Category:2023_in_outer_space" title="Category:2023 in outer space">Category:2023 in outer space</a></li></ul> </div></td></tr></tbody></table></div> <p><br /> </p> <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 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