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class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">F-type main sequence star in the constellation Eridanus</div> <table class="infobox" style="width: 22em; font-size: 88%; line-height: 1.5em"> <caption style="font-size: 125%; font-weight: bold">51 Eridani </caption><tbody><tr><td colspan="2" style="text-align:center;"><div style="text-align: center; margin-left:auto; margin-right:auto"><span typeof="mw:File"><a href="/wiki/File:51_Eridani_b_orbit_animated_(2014-2018).gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/51_Eridani_b_orbit_animated_%282014-2018%29.gif/250px-51_Eridani_b_orbit_animated_%282014-2018%29.gif" decoding="async" width="250" height="250" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/51_Eridani_b_orbit_animated_%282014-2018%29.gif/375px-51_Eridani_b_orbit_animated_%282014-2018%29.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bf/51_Eridani_b_orbit_animated_%282014-2018%29.gif/500px-51_Eridani_b_orbit_animated_%282014-2018%29.gif 2x" data-file-width="720" data-file-height="720" /></a></span><br />51 Eridani and its planet <a href="/wiki/51_Eridani_b" title="51 Eridani b">51 Eridani b</a></div></td></tr> <tr> <th style="text-align: center; background-color: #FFFFC0;" colspan="2">Observation data<br /><a href="/wiki/Epoch_(astronomy)" title="Epoch (astronomy)">Epoch</a> J2000      <a href="/wiki/Equinox_(celestial_coordinates)" title="Equinox (celestial coordinates)">Equinox</a> J2000 </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/Eridanus_(constellation)" title="Eridanus (constellation)">Eridanus</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">04<sup>h</sup> 37<sup>m</sup> 36.13234<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>−02° 28′ 24.7749″<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>5.22<sup id="cite_ref-Simon_2-0" class="reference"><a href="#cite_note-Simon-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>F0 V<sup id="cite_ref-Simon_2-1" class="reference"><a href="#cite_note-Simon-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left"><a href="/wiki/Variable_star" title="Variable star">Variable type</a> </th> <td><a href="/wiki/Gamma_Doradus_variable" title="Gamma Doradus variable">γ Dor</a><sup id="cite_ref-Sepulveda_et_al_2022_3-0" class="reference"><a href="#cite_note-Sepulveda_et_al_2022-3"><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>12.60<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.3<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> km/s</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> 44.22 ± 0.34<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> <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a>/<a href="/wiki/Year" title="Year">yr</a> <br /> <abbr title="Declination">Dec.:</abbr> –64.39 ± 0.27<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> <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a>/<a href="/wiki/Year" title="Year">yr</a> </td></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Stellar_parallax" title="Stellar parallax">Parallax</a> (π)</b></td><td>33.98 ± 0.34 <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>96.0 ± 1.0 <a href="/wiki/Light-year" title="Light-year">ly</a> <br />(29.4 ± 0.3 <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>2.87<sup id="cite_ref-Mamajek_5-0" class="reference"><a href="#cite_note-Mamajek-5"><span class="cite-bracket">[</span>5<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">51 Eri A</th></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Stellar_mass" title="Stellar mass">Mass</a></b></td><td><span class="nowrap"><span data-sort-value="7000155000000000000♠"></span>1.550<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+0.006<br />−0.005</span></span></span><sup id="cite_ref-Elliott_6-0" class="reference"><a href="#cite_note-Elliott-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Solar_mass" title="Solar mass"><var>M</var><sub>☉</sub></a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Radius" title="Radius">Radius</a></b></td><td><span class="nowrap"><span data-sort-value="7000145000000000000♠"></span>1.45<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.02</span><sup id="cite_ref-Elliott_6-1" class="reference"><a href="#cite_note-Elliott-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Solar_radius" title="Solar radius"><var>R</var><sub>☉</sub></a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Luminosity" title="Luminosity">Luminosity</a></b></td><td><span class="nowrap"><span data-sort-value="7000572000000000000♠"></span>5.72<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.096</span><sup id="cite_ref-Elliott_6-2" class="reference"><a href="#cite_note-Elliott-6"><span class="cite-bracket">[</span>6<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/Surface_gravity" title="Surface gravity">Surface gravity</a> (log <i>g</i>)</b></td><td>3.95<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.04<sup id="cite_ref-Rajan2017_7-0" class="reference"><a href="#cite_note-Rajan2017-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Centimetre%E2%80%93gram%E2%80%93second_system_of_units" title="Centimetre–gram–second system of units">cgs</a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Effective_temperature" title="Effective temperature">Temperature</a></b></td><td><span class="nowrap"><span data-sort-value="7003742200000000000♠"></span>7,422<span style="margin-left:0.3em;margin-right:0.15em;">±</span>58</span><sup id="cite_ref-Elliott_6-3" class="reference"><a href="#cite_note-Elliott-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Kelvin" title="Kelvin">K</a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Metallicity" title="Metallicity">Metallicity</a></b> [Fe/H]</td><td>−0.12<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.06<sup id="cite_ref-Rajan2017_7-1" class="reference"><a href="#cite_note-Rajan2017-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Decimal_exponent" class="mw-redirect" title="Decimal exponent">dex</a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Projected_rotational_velocity" class="mw-redirect" title="Projected rotational velocity">Rotational velocity</a> (<i>v</i> sin <i>i</i>)</b></td><td>77.9<sup id="cite_ref-Paunzen2014_8-0" class="reference"><a href="#cite_note-Paunzen2014-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> km/s</td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Stellar_evolution" title="Stellar evolution">Age</a></b></td><td><span class="nowrap"><span data-sort-value="7001232000000000000♠"></span>23.2<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+1.7<br />−2.0</span></span></span><sup id="cite_ref-Elliott_6-4" class="reference"><a href="#cite_note-Elliott-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Megayear" class="mw-redirect" title="Megayear">Myr</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"><div style="width: 250px;"> <a href="/wiki/Bayer_designation" title="Bayer designation">c Eridani</a>, <a href="/wiki/Flamsteed_designation" title="Flamsteed designation">51 Eridani</a>, <span class="nowrap"><a href="/wiki/Bonner_Durchmusterung" class="mw-redirect" title="Bonner Durchmusterung">BD</a>−02° 963</span>, <a href="/wiki/Henry_Draper_Catalogue" title="Henry Draper Catalogue">HD</a> 29391, <a href="/wiki/Hipparcos_Catalogue" class="mw-redirect" title="Hipparcos Catalogue">HIP</a> 21547, <a href="/wiki/Harvard_Revised_catalogue" class="mw-redirect" title="Harvard Revised catalogue">HR</a> 1474, <a href="/wiki/Smithsonian_Astrophysical_Observatory_Star_Catalog" title="Smithsonian Astrophysical Observatory Star Catalog">SAO</a> 131358, <span class="nowrap"><a href="/wiki/2MASS" title="2MASS">2MASS</a> J04373613-0228248</span> </div></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=51+Eri">data</a></td></tr> </tbody></table> <p><b>51 Eridani</b> is a <a href="/wiki/Star" title="Star">star</a> in the <a href="/wiki/Constellation" title="Constellation">constellation</a> <a href="/wiki/Eridanus_(constellation)" title="Eridanus (constellation)">Eridanus</a>. It has an <a href="/wiki/Apparent_magnitude" title="Apparent magnitude">apparent magnitude</a> of 5.22,<sup id="cite_ref-Simon_2-2" class="reference"><a href="#cite_note-Simon-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> meaning it is just visible to the unaided eye in suburban and rural skies.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> The primary star's <a href="/wiki/Absolute_magnitude" title="Absolute magnitude">absolute magnitude</a> is 2.87.<sup id="cite_ref-Mamajek_5-1" class="reference"><a href="#cite_note-Mamajek-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> There is also a <a href="/wiki/Binary_star" title="Binary star">binary star</a> named GJ 3305 which shares the same <a href="/wiki/Proper_motion" title="Proper motion">proper motion</a> through space with it,<sup id="cite_ref-Montet_10-0" class="reference"><a href="#cite_note-Montet-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> making it overall a triple star system. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="General_information">General information</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=51_Eridani&action=edit&section=1" title="Edit section: General information"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Johann_Bayer" title="Johann Bayer">Johann Bayer</a> gave the star its <a href="/wiki/Bayer_designation" title="Bayer designation">Bayer designation</a> of c Eridani,<sup id="cite_ref-FOOTNOTEWagman2003144_11-0" class="reference"><a href="#cite_note-FOOTNOTEWagman2003144-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> using lowercase letters once he had exhausted all the letters of the <a href="/wiki/Greek_alphabet" title="Greek alphabet">Greek alphabet</a>, in his 1603 star chart <i><a href="/wiki/Uranometria" title="Uranometria">Uranometria</a></i>.<sup id="cite_ref-FOOTNOTEWagman20036–7_12-0" class="reference"><a href="#cite_note-FOOTNOTEWagman20036–7-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> It was catalogued as 51 Eridani by <a href="/wiki/John_Flamsteed" title="John Flamsteed">John Flamsteed</a> in 1725.<sup id="cite_ref-FOOTNOTEWagman2003403_13-0" class="reference"><a href="#cite_note-FOOTNOTEWagman2003403-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p><p>Located around 97 <a href="/wiki/Light-year" title="Light-year">light-years</a> distant, it shines with a <a href="/wiki/Luminosity" title="Luminosity">luminosity</a> approximately 5.72 times <a href="/wiki/Solar_luminosity" title="Solar luminosity">that of the Sun</a> and has a surface temperature of <span class="nowrap"><span data-sort-value="7003740000000000000♠"></span>7,400 <a href="/wiki/Kelvin" title="Kelvin">K</a></span>. A cold <a href="/wiki/Debris_disk" title="Debris disk">debris disk</a> has been detected with a likely inner border of 82 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a> (AU).<sup id="cite_ref-Riviere-Marichalar_2014_14-0" class="reference"><a href="#cite_note-Riviere-Marichalar_2014-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> A <a href="/wiki/F-type_main-sequence_star" title="F-type main-sequence star">yellow-white main-sequence star</a> of spectral type F0V, 51 Eridani is a member of the <a href="/wiki/Beta_Pictoris_moving_group" title="Beta Pictoris moving group">Beta Pictoris moving group</a> and hence thought to be around 23 million years old.<sup id="cite_ref-Mamajek_5-2" class="reference"><a href="#cite_note-Mamajek-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Somewhat more luminous than it should be for its surface temperature, 51 Eridani has also been classified as <a href="/wiki/Spectral_type" class="mw-redirect" title="Spectral type">spectral type</a> F0IV—a type corresponding to ageing stars that have used up their core hydrogen fuel and become <a href="/wiki/Subgiant" title="Subgiant">subgiants</a>; however, in this case it is a phenomenon of very young stars 5 to 30 million years old that have yet to settle on the <a href="/wiki/Main_sequence" title="Main sequence">main sequence</a>.<sup id="cite_ref-Pecaut_15-0" class="reference"><a href="#cite_note-Pecaut-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Photometry_(astronomy)" title="Photometry (astronomy)">Photometric</a> measurements with the <a href="/wiki/Transiting_Exoplanet_Survey_Satellite" title="Transiting Exoplanet Survey Satellite">TESS</a> <a href="/wiki/Space_telescope" title="Space telescope">space telescope</a> show that this is a <a href="/wiki/Gamma_Doradus_variable" title="Gamma Doradus variable">Gamma Doradus-like</a> <a href="/wiki/Pulsating_star" class="mw-redirect" title="Pulsating star">pulsating star</a>. Nine pulsation frequencies have been detected.<sup id="cite_ref-Sepulveda_et_al_2022_3-1" class="reference"><a href="#cite_note-Sepulveda_et_al_2022-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="GJ_3305">GJ 3305</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=51_Eridani&action=edit&section=2" title="Edit section: GJ 3305"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>51 Eridani has a companion, known as GJ 3305. The system has a <a href="/wiki/Common_proper_motion" class="mw-redirect" title="Common proper motion">common proper motion</a> with 51 Eridani, and hence it is gravitationally bound, although it is separated by 66″ corresponding to 2,000 AU. It is a binary star system with two <a href="/wiki/Red_giant" title="Red giant">M-type</a> <a href="/wiki/Red_dwarf" title="Red dwarf">red dwarfs</a>. The primary has a mass of 0.67 ± 0.05 <var>M</var><sub>☉</sub> while the secondary has a mass of 0.44 ± 0.05 <var>M</var><sub>☉</sub>. The two red dwarfs themselves are separated by a <a href="/wiki/Semimajor_axis" class="mw-redirect" title="Semimajor axis">semimajor axis</a> of 9.78 ± 0.14 AU and have an eccentricity of 0.19 ± 0.02.<sup id="cite_ref-Montet_10-1" class="reference"><a href="#cite_note-Montet-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>The star is significant as the host sun to one of the first <a href="/wiki/Planet" title="Planet">planets</a> to have been directly imaged in wide-orbit, and the first detected by the <a href="/wiki/Gemini_Planet_Imager" title="Gemini Planet Imager">Gemini Planet Imager</a>.<sup id="cite_ref-Keck_16-0" class="reference"><a href="#cite_note-Keck-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Planetary_system">Planetary system</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=51_Eridani&action=edit&section=3" title="Edit section: Planetary system"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/51_Eridani_b" title="51 Eridani b">51 Eridani b</a> is a young <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a>-like <a href="/wiki/Planet" title="Planet">planet</a> and was photographed, in near-<a href="/wiki/Infrared" title="Infrared">infrared</a> light, on 21 December 2014.<sup id="cite_ref-Feltman_17-0" class="reference"><a href="#cite_note-Feltman-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> The study, led by <a href="/w/index.php?title=Bruce_Macintosh_(physist)&action=edit&redlink=1" class="new" title="Bruce Macintosh (physist) (page does not exist)">Bruce Macintosh</a>, a <a href="/wiki/Professor" title="Professor">professor</a> of <a href="/wiki/Physics" title="Physics">physics</a> at <a href="/wiki/Stanford_University" title="Stanford University">Stanford University</a> and confirmed by <a href="/w/index.php?title=Christian_Marois&action=edit&redlink=1" class="new" title="Christian Marois (page does not exist)">Christian Marois</a> found that <a href="/wiki/Methane" title="Methane">methane</a> and <a href="/wiki/Water" title="Water">water</a> were abundant in the <a href="/wiki/Atmosphere" title="Atmosphere">atmosphere</a> of the planet and its <a href="/wiki/Diameter" title="Diameter">diameter</a> was only slightly larger than <a href="/wiki/Jupiter_mass" title="Jupiter mass">Jupiter's</a>.<sup id="cite_ref-Keck_16-1" class="reference"><a href="#cite_note-Keck-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> It is the smallest <a href="/wiki/Exoplanet" title="Exoplanet">exoplanet</a> directly imaged to date.<sup id="cite_ref-Gary_2015_18-0" class="reference"><a href="#cite_note-Gary_2015-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> The planetary orbit was found to be significantly eccentric by 2019.<sup id="cite_ref-Rosa2019_19-0" class="reference"><a href="#cite_note-Rosa2019-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Gaia_(spacecraft)" title="Gaia (spacecraft)"><i>Gaia</i></a> <a href="/wiki/Astrometry" title="Astrometry">astrometry</a> also suggests an additional planet on orbit smaller than <a href="/wiki/51_Eridani_b" title="51 Eridani b">51 Eridani b</a>.<sup id="cite_ref-Rosa2019_19-1" class="reference"><a href="#cite_note-Rosa2019-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable" style="text-align:center; margin-left:auto; margin-right:auto;"> <caption>The planetary system<sup id="cite_ref-Rosa2019_19-2" class="reference"><a href="#cite_note-Rosa2019-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th align="center">Companion<br /><small>(in order from star)</small> </th> <th align="center"><a href="/wiki/Mass" title="Mass">Mass</a> </th> <th align="center"><a href="/wiki/Semi-major_and_semi-minor_axes" title="Semi-major and semi-minor axes">Semimajor axis</a><br /><small>(<a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a>)</small> </th> <th align="center"><a href="/wiki/Orbital_period" title="Orbital period">Orbital period</a><br /><small>(<a href="/wiki/Year" title="Year">years</a>)</small> </th> <th align="center"><a href="/wiki/Orbital_eccentricity" title="Orbital eccentricity">Eccentricity</a> </th> <th align="center"><a href="/wiki/Orbital_inclination" title="Orbital inclination">Inclination</a> </th> <th align="center"><a href="/wiki/Radius" title="Radius">Radius</a> </th></tr> <tr> <td><b><a href="/wiki/51_Eridani_b" title="51 Eridani b">b</a></b> </td> <td>4.1<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.4<sup id="cite_ref-Elliott_6-5" class="reference"><a href="#cite_note-Elliott-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Jupiter_mass" title="Jupiter mass"><span class="texhtml mvar" style="font-style:italic;">M</span><sub>J</sub></a> </td> <td>11.1<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">+4.2</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">−1.3</sub></span></span> </td> <td>28.1<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">+17.2</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">−4.9</sub></span></span> </td> <td>0.53<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">+0.09</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">−0.13</sub></span></span> </td> <td>136<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">+10</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">−11</sub></span></span><a href="/wiki/Degree_(angle)" title="Degree (angle)">°</a> </td> <td>1.11<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">+0.16</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">−0.13</sub></span></span> <a href="/wiki/Jupiter_radius" title="Jupiter radius"><span class="texhtml mvar" style="font-style:italic;">R</span><sub>J</sub></a> </td></tr> </tbody></table> <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=51_Eridani&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 .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <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 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.navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Eridanus_(constellation)" title="Template:Eridanus (constellation)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Eridanus_(constellation)" title="Template talk:Eridanus (constellation)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Eridanus_(constellation)" title="Special:EditPage/Template:Eridanus (constellation)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Constellation_of_Eridanus" style="font-size:114%;margin:0 4em"><a href="/wiki/Eridanus_(constellation)" title="Eridanus (constellation)">Constellation of Eridanus</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div> <ul><li><a href="/wiki/List_of_stars_in_Eridanus" title="List of stars in Eridanus">List of stars in Eridanus</a></li> <li><a href="/wiki/Eridanus_in_Chinese_astronomy" title="Eridanus in Chinese astronomy">Eridanus in Chinese astronomy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Star" title="Star">Stars</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bayer_designation" title="Bayer designation">Bayer</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Achernar" title="Achernar">α (Achernar)</a></li> <li><a href="/wiki/Beta_Eridani" title="Beta Eridani">β (Cursa)</a></li> <li><a href="/wiki/Gamma_Eridani" title="Gamma Eridani">γ (Zaurak)</a></li> <li><a href="/wiki/Delta_Eridani" title="Delta Eridani">δ (Rana)</a></li> <li><a href="/wiki/Epsilon_Eridani" title="Epsilon Eridani">ε (Ran)</a></li> <li><a href="/wiki/Zeta_Eridani" title="Zeta Eridani">ζ (Zibal)</a></li> <li><a href="/wiki/Eta_Eridani" title="Eta Eridani">η (Azha)</a></li> <li><a href="/wiki/Theta_Eridani" title="Theta Eridani">θ<sup>1</sup> (Acamar)</a></li> <li><a href="/wiki/Theta_Eridani" title="Theta Eridani">θ<sup>2</sup></a></li> <li><a href="/wiki/Iota_Eridani" title="Iota Eridani">ι</a></li> <li><a href="/wiki/Kappa_Eridani" title="Kappa Eridani">κ</a></li> <li><a href="/wiki/Lambda_Eridani" title="Lambda Eridani">λ</a></li> <li><a href="/wiki/Mu_Eridani" title="Mu Eridani">μ</a></li> <li><a href="/wiki/Nu_Eridani" title="Nu Eridani">ν</a></li> <li><a href="/wiki/Xi_Eridani" title="Xi Eridani">ξ</a></li> <li><a href="/wiki/Omicron1_Eridani" title="Omicron1 Eridani">ο<sup>1</sup> (Beid)</a></li> <li><a href="/wiki/40_Eridani" title="40 Eridani">ο<sup>2</sup> (40, Keid)</a></li> <li><a href="/wiki/Pi_Eridani" title="Pi Eridani">π</a></li> <li><a href="/wiki/Rho1_Eridani" title="Rho1 Eridani">ρ<sup>1</sup></a></li> <li><a href="/wiki/Rho2_Eridani" title="Rho2 Eridani">ρ<sup>2</sup></a></li> <li><a href="/wiki/Rho3_Eridani" title="Rho3 Eridani">ρ<sup>3</sup></a></li> <li><a href="/wiki/Tau1_Eridani" title="Tau1 Eridani">τ<sup>1</sup></a></li> <li><a href="/wiki/Tau2_Eridani" title="Tau2 Eridani">τ<sup>2</sup> (Angetenar)</a></li> <li><a href="/wiki/Tau3_Eridani" title="Tau3 Eridani">τ<sup>3</sup></a></li> <li><a href="/wiki/Tau4_Eridani" title="Tau4 Eridani">τ<sup>4</sup></a></li> <li><a href="/wiki/Tau5_Eridani" title="Tau5 Eridani">τ<sup>5</sup></a></li> <li><a href="/wiki/Tau6_Eridani" title="Tau6 Eridani">τ<sup>6</sup></a></li> <li><a href="/wiki/Tau7_Eridani" title="Tau7 Eridani">τ<sup>7</sup></a></li> <li><a href="/wiki/Tau8_Eridani" title="Tau8 Eridani">τ<sup>8</sup></a></li> <li><a href="/wiki/Tau9_Eridani" title="Tau9 Eridani">τ<sup>9</sup></a></li> <li><a href="/wiki/Upsilon1_Eridani" title="Upsilon1 Eridani">υ<sup>1</sup></a></li> <li><a href="/wiki/Upsilon2_Eridani" title="Upsilon2 Eridani">υ<sup>2</sup> (Theemin)</a></li> <li><a href="/wiki/Upsilon3_Eridani" title="Upsilon3 Eridani">υ<sup>3</sup> (Beemim)</a></li> <li><a href="/wiki/Upsilon4_Eridani" title="Upsilon4 Eridani">υ<sup>4</sup></a></li> <li><a href="/wiki/Phi_Eridani" title="Phi Eridani">φ</a></li> <li><a href="/wiki/Chi_Eridani" title="Chi Eridani">χ</a></li> <li><a href="/wiki/Psi_Eridani" title="Psi Eridani">ψ</a></li> <li><a href="/wiki/Omega_Eridani" title="Omega Eridani">ω</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Flamsteed_designation" title="Flamsteed designation">Flamsteed</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/14_Eridani" title="14 Eridani">14</a></li> <li><a href="/wiki/15_Eridani" title="15 Eridani">15</a></li> <li><a href="/wiki/17_Eridani" title="17 Eridani">17 (v)</a></li> <li><a href="/wiki/39_Eridani" title="39 Eridani">39 (A)</a></li> <li><a href="/wiki/45_Eridani" title="45 Eridani">45</a></li> <li><a class="mw-selflink selflink">51 (c)</a></li> <li><a href="/wiki/53_Eridani" title="53 Eridani">53 (Sceptrum)</a></li> <li><a href="/wiki/54_Eridani" title="54 Eridani">54</a></li> <li><a href="/wiki/58_Eridani" title="58 Eridani">58</a></li> <li><a href="/wiki/64_Eridani" title="64 Eridani">64</a></li> <li><a href="/wiki/66_Eridani" title="66 Eridani">66</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Variable_star_designation" class="mw-redirect" title="Variable star designation">Variable</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HR_1217" title="HR 1217">DO</a></li> <li><a href="/wiki/HD_28843" title="HD 28843">DZ</a></li> <li><a href="/wiki/EF_Eridani" title="EF Eridani">EF</a></li> <li><a href="/wiki/EK_Eridani" title="EK Eridani">EK</a></li> <li><a href="/wiki/HD_27563" title="HD 27563">EM (d)</a></li> <li><a href="/wiki/HD_17925" title="HD 17925">EP</a></li> <li><a href="/wiki/KT_Eridani" title="KT Eridani">KT</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bright_Star_Catalogue" title="Bright Star Catalogue">HR</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/P_Eridani" title="P Eridani">486 (p)</a></li> <li><a href="/wiki/P_Eridani" title="P Eridani">487 (p)</a></li> <li><a href="/wiki/HD_10647" title="HD 10647">506 (q<sup>1</sup>)</a></li> <li><a href="/wiki/HD_16754" title="HD 16754">789 (s)</a></li> <li><a href="/wiki/HD_17943" title="HD 17943">859</a></li> <li><a href="/wiki/82_G._Eridani" title="82 G. Eridani">1008 (e)</a></li> <li><a href="/wiki/HD_22663" title="HD 22663">1106 (y)</a></li> <li><a href="/wiki/HD_23319" title="HD 23319">1143 (h)</a></li> <li><a href="/wiki/F_Eridani" title="F Eridani">1189 (f)</a></li> <li><a href="/wiki/F_Eridani" title="F Eridani">1190 (f)</a></li> <li><a href="/wiki/HD_24160" title="HD 24160">1195 (g)</a></li> <li><a href="/wiki/HD_29573" title="HD 29573">1483</a></li> <li><a href="/wiki/HD_30562" title="HD 30562">1536</a></li> <li><a href="/wiki/HR_1614" title="HR 1614">1614</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Henry_Draper_Catalogue" title="Henry Draper Catalogue">HD</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_18742" title="HD 18742">18742 (Ayeyarwady)</a></li> <li><a href="/wiki/HD_19467" title="HD 19467">19467</a></li> <li><a href="/wiki/HD_28185" title="HD 28185">28185</a></li> <li><a href="/wiki/HD_30562" title="HD 30562">30562</a></li> <li><a href="/wiki/HD_30856" title="HD 30856">30856 (Mouhoun)</a></li> <li><a href="/wiki/HD_30963" title="HD 30963">30963</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/2MASS_J04151954%E2%88%920935066" title="2MASS J04151954−0935066">2MASS J04151954−0935066</a></li> <li><a href="/wiki/DENIS_0255%E2%88%924700" title="DENIS 0255−4700">DENIS 0255−4700</a></li> <li><a href="/wiki/Gliese_86" title="Gliese 86">Gliese 86</a></li> <li><a href="/wiki/Gliese_180" title="Gliese 180">Gliese 180</a></li> <li><a href="/wiki/GJ_1062" title="GJ 1062">GJ 1062</a></li> <li><a href="/wiki/GJ_3293" title="GJ 3293">GJ 3293</a></li> <li><a href="/wiki/GJ_3323" title="GJ 3323">GJ 3323</a></li> <li><a href="/wiki/HIP_12961" title="HIP 12961">HIP 12961 (Koeia)</a></li> <li><a href="/wiki/LTT_1445" title="LTT 1445">LTT 1445</a></li> <li><a href="/wiki/LP_890-9" title="LP 890-9">LP 890-9</a></li> <li><a href="/wiki/Mothra_(star)" title="Mothra (star)">Mothra</a></li> <li><a href="/wiki/WASP-22" class="mw-redirect" title="WASP-22">WASP-22 (Tojil)</a></li> <li><a href="/wiki/WASP-35" title="WASP-35">WASP-35</a></li> <li><a href="/wiki/WASP-50" title="WASP-50">WASP-50 (Chaophraya)</a></li> <li><a href="/wiki/WASP-78" title="WASP-78">WASP-78</a></li> <li><a href="/wiki/WASP-79" class="mw-redirect" title="WASP-79">WASP-79 (Montuno)</a></li> <li><a href="/wiki/WISE_J0336%E2%88%920143" title="WISE J0336−0143">WISE J0336−0143</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Exoplanets" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Exoplanet" title="Exoplanet">Exoplanets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/51_Eridani_b" title="51 Eridani b">51 Eridani b</a></li> <li><a href="/wiki/Epsilon_Eridani_b" title="Epsilon Eridani b">ε Eridani b (AEgir)</a></li> <li><a href="/wiki/Gliese_86_b" title="Gliese 86 b">Gliese 86 b</a></li> <li><a href="/wiki/HD_10647_b" title="HD 10647 b">HD 10647 b</a></li> <li><a href="/wiki/HD_18742_b" class="mw-redirect" title="HD 18742 b">HD 18742 b (Bagan)</a></li> <li><a href="/wiki/HD_28185_b" title="HD 28185 b">HD 28185 b</a></li> <li><a href="/wiki/HD_30562_b" title="HD 30562 b">HD 30562 b</a></li> <li><a href="/wiki/HD_30856_b" class="mw-redirect" title="HD 30856 b">HD 30856 Ab (Nakanbé)</a></li> <li><a href="/wiki/WASP-79b" title="WASP-79b">WASP-79b (Pollera)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Nebula" title="Nebula">Nebulae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/New_General_Catalogue" title="New General Catalogue">NGC</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_1535" title="NGC 1535">1535</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Galaxy" title="Galaxy">Galaxies</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px">NGC</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_782" title="NGC 782">782</a></li> <li><a href="/wiki/NGC_852" title="NGC 852">852</a></li> <li><a href="/wiki/NGC_939" title="NGC 939">939</a></li> <li><a href="/wiki/NGC_1084" title="NGC 1084">1084</a></li> <li><a href="/wiki/NGC_1132" title="NGC 1132">1132</a></li> <li><a href="/wiki/NGC_1140" title="NGC 1140">1140</a></li> <li><a href="/wiki/NGC_1172" title="NGC 1172">1172</a></li> <li><a href="/wiki/NGC_1187" title="NGC 1187">1187</a></li> <li><a href="/wiki/NGC_1189" title="NGC 1189">1189</a></li> <li><a href="/wiki/NGC_1190" title="NGC 1190">1190</a></li> <li><a href="/wiki/NGC_1191" title="NGC 1191">1191</a></li> <li><a href="/wiki/NGC_1192" title="NGC 1192">1192</a></li> <li><a href="/wiki/NGC_1199" title="NGC 1199">1199</a></li> <li><a href="/wiki/NGC_1222" title="NGC 1222">1222</a></li> <li><a href="/wiki/NGC_1232" title="NGC 1232">1232</a></li> <li><a href="/wiki/NGC_1234" title="NGC 1234">1234</a></li> <li><a href="/wiki/NGC_1241" title="NGC 1241">1241</a></li> <li><a href="/wiki/NGC_1253" title="NGC 1253">1253</a></li> <li><a href="/wiki/NGC_1262" title="NGC 1262">1262</a></li> <li><a href="/wiki/NGC_1266" title="NGC 1266">1266</a></li> <li><a href="/wiki/NGC_1269" class="mw-redirect" title="NGC 1269">1269</a></li> <li><a href="/wiki/NGC_1291" title="NGC 1291">1291</a></li> <li><a href="/wiki/NGC_1300" title="NGC 1300">1300</a></li> <li><a href="/wiki/NGC_1309" title="NGC 1309">1309</a></li> <li><a href="/wiki/NGC_1325" title="NGC 1325">1325</a></li> <li><a href="/wiki/NGC_1332" title="NGC 1332">1332</a></li> <li><a href="/wiki/NGC_1337" title="NGC 1337">1337</a></li> <li><a href="/wiki/NGC_1345" title="NGC 1345">1345</a></li> <li><a href="/wiki/NGC_1347" title="NGC 1347">1347</a></li> <li><a href="/wiki/NGC_1353" title="NGC 1353">1353</a></li> <li><a href="/wiki/NGC_1357" title="NGC 1357">1357</a></li> <li><a href="/wiki/NGC_1369" title="NGC 1369">1369</a></li> <li><a href="/wiki/NGC_1386" title="NGC 1386">1386</a></li> <li><a href="/wiki/NGC_1395" title="NGC 1395">1395</a></li> <li><a href="/wiki/NGC_1400" title="NGC 1400">1400</a></li> <li><a href="/wiki/NGC_1403" title="NGC 1403">1403</a></li> <li><a href="/wiki/NGC_1404" title="NGC 1404">1404</a></li> <li><a href="/wiki/NGC_1407" title="NGC 1407">1407</a></li> <li><a href="/wiki/NGC_1426" title="NGC 1426">1426</a></li> <li><a href="/wiki/NGC_1427A" title="NGC 1427A">1427A</a></li> <li><a href="/wiki/NGC_1436" title="NGC 1436">1436</a></li> <li><a href="/wiki/NGC_1437" class="mw-redirect" title="NGC 1437">1437</a></li> <li><a href="/wiki/NGC_1439" title="NGC 1439">1439</a></li> <li><a href="/wiki/NGC_1452" title="NGC 1452">1452</a></li> <li><a href="/wiki/NGC_1460" title="NGC 1460">1460</a></li> <li><a href="/wiki/NGC_1487" title="NGC 1487">1487</a></li> <li><a href="/wiki/NGC_1531" title="NGC 1531">1531</a></li> <li><a href="/wiki/NGC_1532" title="NGC 1532">1532</a></li> <li><a href="/wiki/NGC_1592" title="NGC 1592">1592</a></li> <li><a href="/wiki/NGC_1600" title="NGC 1600">1600</a></li> <li><a href="/wiki/NGC_1614" title="NGC 1614">1614</a></li> <li><a href="/wiki/NGC_1637" title="NGC 1637">1637</a></li> <li><a href="/wiki/NGC_1721" title="NGC 1721">1721</a></li> <li><a href="/wiki/NGC_1723" title="NGC 1723">1723</a></li> <li><a href="/wiki/NGC_1725" title="NGC 1725">1725</a></li> <li><a href="/wiki/NGC_1728" title="NGC 1728">1728</a></li> <li><a href="/wiki/NGC_1741" title="NGC 1741">1741</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Eridanus_II" title="Eridanus II">Eridanus II</a></li> <li><a href="/wiki/ESO_198-13" title="ESO 198-13">ESO 198-13</a></li> <li><a href="/wiki/ESO_0313-192" title="ESO 0313-192">ESO 0313-192</a></li> <li><a href="/wiki/IC_1953" title="IC 1953">IC 1953</a></li> <li><a href="/wiki/IC_2006" title="IC 2006">IC 2006</a></li> <li><a href="/wiki/LEDA_74886" title="LEDA 74886">LEDA 74886</a></li> <li><a href="/wiki/MRC_0406-244" title="MRC 0406-244">MRC 0406-244</a></li> <li><a href="/wiki/PKS_0208-512" title="PKS 0208-512">PKS 0208-512</a></li> <li><a href="/wiki/PKS_0405%E2%80%93385" title="PKS 0405–385">PKS 0405–385</a></li> <li><a href="/wiki/PKS_0420-014" title="PKS 0420-014">PKS 0420-014</a></li> <li><a href="/wiki/UGC_2812" title="UGC 2812">UGC 2812</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Galaxy_clusters" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Galaxy_cluster" title="Galaxy cluster">Galaxy clusters</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_383" title="Abell 383">Abell 383</a></li> <li><a href="/wiki/Eridanus_Cluster" title="Eridanus Cluster">Eridanus Cluster</a></li> <li><a href="/wiki/Eridanus_Group" title="Eridanus Group">Eridanus Group</a></li> <li><a href="/wiki/MACS_J0416.1-2403" title="MACS J0416.1-2403">MACS J0416.1-2403</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Astronomical_events" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Transient_astronomical_event" class="mw-redirect" title="Transient astronomical event">Astronomical events</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/GRB_080913" title="GRB 080913">GRB 080913</a></li> <li><a href="/wiki/HE0435-1223" title="HE0435-1223">HE0435-1223</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Eridanus_(constellation)" 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