List of coolest exoplanets

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{{Dynamic list}}

This is a list of the coolest exoplanets known, specifically those with temperatures lower than {{Convert|-75|C|K}}. Planets from the Solar System were also included for comparison purposes.

File:ESO_OGLE-2005-BLG-390Lb.jpg is the coldest known exoplanet, and was nicknamed "Hoth" by NASA in reference to the planet from the Star Wars franchise.{{Cite web |date=May 1, 2023 |title=Meet 8 'Star Wars' Planets in Our Own Galaxy |url=https://exoplanets.nasa.gov/news/239/meet-8-star-wars-planets-in-our-own-galaxy/ |access-date=December 11, 2023 |website=exoplanets.nasa.gov}} ]]

class="wikitable sortable article-table"

! class="unsortable" |Image
(or artistic representation)

!Name

!Temperature

(° C)

!Mass

! Method{{Efn|Teff: Measured effective temperature.

Teq: The temperature of the planet has not been measured, so it is listed with the calculated equilibrium temperature.|name=Temperature methods}}

{{Nowrap|(M or {{Jupiter mass}})}}

! class="unsortable" |Notes

! class="unsortable" |References

style="background:#000000;" |File:ESO_OGLE-2005-BLG-390Lb.jpg

|{{Nowrap|OGLE-2005-BLG-390Lb}}

|{{val

223|u=}} ({{val|50|ul=K}})

|{{sort|000550|{{val|5.5|u=Earth mass}}}}

| rowspan="3" |Teq

|The coldest known exoplanet, with a temperature lower than the melting points of oxygen and nitrogen. {{Efn|The melting points of elemental Nitrogen and Oxygen at 1 bar pressure are -210°C and -218°C, respectively.{{Cite web |date=2021-11-26 |title=Nitrogen - Melting Point - Boiling Point {{!}} nuclear-power.com |url=https://www.nuclear-power.com/nitrogen-melting-point-boiling-point/ |access-date=2023-12-11 |website=Nuclear Power |language=en-us}}{{Cite web |url=http://www.chem.uiuc.edu/rogers/Text9/Tx91/tx91.html#:~:text=The%20normal%20melting%20point%20of,a%20gas%20at%20room%20temperature. |title=Characteristics of the Solid, Liquid, and Gaseous States |access-date=2023-12-11 |website=www.chem.uiuc.edu}}|name=Nitrogen and Oxygen|group=lower-alpha}}

|{{Cite journal |last1=Beaulieu |first1=J. -P. |last2=Bennett |first2=D. P. |last3=Fouqué |first3=P. |last4=Williams |first4=A. |last5=Dominik |first5=M. |last6=Jørgensen |first6=U. G. |last7=Kubas |first7=D. |last8=Cassan |first8=A. |last9=Coutures |first9=C. |last10=Greenhill |first10=J. |last11=Hill |first11=K. |last12=Menzies |first12=J. |last13=Sackett |first13=P. D. |last14=Albrow |first14=M. |last15=Brillant |first15=S. |date=2006-01-01 |title=Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing |url=https://ui.adsabs.harvard.edu/abs/2006Natur.439..437B |journal=Nature |volume=439 |issue=7075 |pages=437–440 |doi=10.1038/nature04441 |pmid=16437108 |arxiv=astro-ph/0601563 |bibcode=2006Natur.439..437B |s2cid=4414076 |issn=0028-0836}}

style="background:#000000;" |

|{{Nowrap|OGLE-2005-BLG-071L b}}

|{{val

218}}

|{{sort|120764|{{val|3.8|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Dong |first1=Subo |last2=Gould |first2=Andrew |last3=Udalski |first3=Andrzej |last4=Anderson |first4=Jay |last5=Christie |first5=G. W. |last6=Gaudi |first6=B. S. |last7=OGLE Collaboration |last8=Jaroszyński |first8=M. |last9=Kubiak |first9=M. |last10=Szymański |first10=M. K. |last11=Pietrzyński |first11=G. |last12=Soszyński |first12=I. |last13=Szewczyk |first13=O. |last14=Ulaczyk |first14=K. |last15=Wyrzykowski |first15=Ł. |date=2009-04-01 |title=OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion? |url=https://ui.adsabs.harvard.edu/abs/2009ApJ...695..970D |journal=The Astrophysical Journal |volume=695 |issue=2 |pages=970–987 |doi=10.1088/0004-637X/695/2/970 |arxiv=0804.1354 |bibcode=2009ApJ...695..970D |s2cid=14408891 |issn=0004-637X}}

style="background:#000000;" |File:Artist's_impression_of_pulsar_planet_B1620-26c.jpg

|{{Nowrap|PSR B1620-26 b}}

|{{val

201.2}}

|{{sort|079450|{{val|2.5|u=Jupiter mass}}}}

|One of the oldest exoplanets known, with an age of 12.7 billion years.{{Efn|The age is the same as the globular cluster where PSR B1620-26b is located (Messier 4), as all the stars in the cluster formed at the same time, and the planets form together with their host stars.|name=Age estimate|group=note}}

|{{Cite web |title=PSR B1620-26b (Cold jovian) |url=https://www.hpcf.upr.edu/~abel/phl/hec_plots/hec_orbit/hec_orbit_PSR_B1620-26_b.png |access-date=December 11, 2023}}

style="background:#53aded;" |

| style="background:#000000;" |File:Neptune Voyager2 color calibrated.png

|Neptune (For reference)

|{{val

200}}

|{{sort|001715|{{val|17.15|u=Earth mass}}}}

| rowspan="2" |

|

|{{Cite web |title=Solar System Temperatures - NASA Science |url=https://science.nasa.gov/resource/solar-system-temperatures/ |access-date=2023-12-11 |website=science.nasa.gov |date=15 February 2022 |language=en}}{{Cite web |title=Neptune Fact Sheet |url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html |access-date=2023-12-11 |website=nssdc.gsfc.nasa.gov}}

style="background:#53aded;" |

| style="background:#000000;" |File:Uranus_true_colour.jpg

|Uranus (For reference)

|{{val

195}}

|{{sort|001454|{{val|14.54|u=Earth mass}}}}

|

|{{Cite web |title=Uranus Fact Sheet |url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/uranusfact.html |access-date=2023-12-11 |website=nssdc.gsfc.nasa.gov}}

style="background:#000000;" |

|TOI-969 c

|{{val

176.6|6.8|5.8}}

|

| rowspan="3" |Teq

|

|{{Cite web |title=Planetary Systems |url=https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PS |access-date=2023-12-11 |website=exoplanetarchive.ipac.caltech.edu}}

style="background:#000000;" |

| MOA-2007-BLG-400Lb

| {{val

173}} or {{val
239}}

| {{sort|001589|{{val|0.5

1.3|u=Jupiter mass}}}}

|

| {{Cite journal |last1=Dong |first1=Subo |last2=Bond |first2=I. A. |last3=Gould |first3=A. |last4=Kozłowski |first4=Szymon |last5=Miyake |first5=N. |last6=Gaudi |first6=B. S. |last7=Bennett |first7=D. P. |last8=Abe |first8=F. |last9=Gilmore |first9=A. C. |last10=Fukui |first10=A. |last11=Furusawa |first11=K. |last12=Hearnshaw |first12=J. B. |last13=Itow |first13=Y. |last14=Kamiya |first14=K. |last15=Kilmartin |first15=P. M. |date=2009-06-04 |title=Microlensing Event Moa-2007-BLG-400: Exhuming the Buried Signature of a Cool, Jovian-Mass Planet |url=http://dx.doi.org/10.1088/0004-637x/698/2/1826 |journal=The Astrophysical Journal |volume=698 |issue=2 |pages=1826–1837 |doi=10.1088/0004-637x/698/2/1826 |issn=0004-637X|arxiv=0809.2997 }}

style="background:#000000;" |

|WASP-132d

|{{val

166|11|18}}

|{{sort|164000|{{val|5.16|0.52|u=Jupiter mass}}}}

|

|{{Citation |last1=Grieves |first1=N. |last2=Bouchy |first2=F. |last3=Armstrong |first3=D. J. |last4=Akinsanmi |first4=B. |last5=Psaridi |first5=A. |last6=Ulmer-Moll |first6=S. |last7=Frensch |first7=Y. G. C. |last8=Helled |first8=R. |last9=Muller |first9=S. |title=Discovery of a cold giant planet and mass measurement of a hot super-Earth in the multi-planetary system WASP-132 |journal=Astronomy & Astrophysics |date=2025 |volume=693 |pages=A144 |doi=10.1051/0004-6361/202348177 |arxiv=2406.15986v1 }}

style="background:#000000;" |

|HD 154345 b

|{{val

162|2}}

|{{sort|037691|{{val|1.186|0.095|0.059|u=Jupiter mass}}}}

|Teff

|

|{{cite arXiv |eprint=2505.12563 |class=astro-ph.EP |first1=Mark R. |last1=Giovinazzi |first2=Cullen H. |last2=Blake |title=The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems |date=2025 |last3=Robertson |first3=Paul |last4=Lin |first4=Andrea S. J. |last5=Gupta |first5=Arvind F. |last6=Mahadevan |first6=Suvrath |last7=Fernandes |first7=Rachel B. |last8=Wright |first8=Jason T. |author9=Daniella Bardalez Gagliuffi |last10=Dong |first10=Jiayin |last11=Fitzmaurice |first11=Evan |last12=Halverson |first12=Samuel |last13=Kanodia |first13=Shubham |last14=Logsdon |first14=Sarah E. |last15=Luhn |first15=Jacob K. |last16=McElwain |first16=Michael W. |last17=Monson |first17=Andy |last18=Ninan |first18=Joe P. |last19=Rajagopal |first19=Jayadev |last20=Roy |first20=Arpita |last21=Schwab |first21=Christian |last22=Stefánsson |first22=Gudmundur |last23=Terrien |first23=Ryan |last24=Eastman |first24=Jason D. |last25=Horner |first25=Jonathan |last26=Plavchan |first26=Peter |last27=Wang |first27=Sharon X. |last28=Wilson |first28=Maurice L. |last29=Wittenmyer |first29=Robert A.}}

style="background:#000000;" |File:Artist’s_impression_of_a_Jupiter_twin_orbiting_HIP_11915.jpg

|HIP 11915 b

|{{val

155}}

|{{sort|031462|{{val|0.99|u=Jupiter mass}}}}

|Teq

|A Jupiter analog.

|{{efn|This was obtained using the [http://www.calctool.org/CALC/phys/astronomy/star_magnitude CalcTool luminosity converter]. Using the apparent magnitude of HIP 11915 and its distance from Earth (using the uncertainty parameter of ±10 light years), this yields a range of 1.03–1.27 {{solar luminosity}}. When used in the default 190 light-year distance (with margin of error) is {{val|1.07|0.11|0.09}} {{solar luminosity}}. When run into simulations using the orbital distance of HIP 11915 and its planet, yields a result of 118 K.|name=temperature}}

style="background:#000000;" |File:Gliese_777_Ab_(Exoplanete).jpg

|Gliese 777 b

|{{val

152|4}}

|{{sort|053390|{{val|1.68|0.26|0.16|u=Jupiter mass}}}}

|Teff

|

|

style="background:#000000;" |

|Gliese 414 Ac

|{{val

148.3|13.5}}

|{{sort|005383|{{val|53.83|u=Earth mass}}}}

| rowspan="2" |Teq

|

|{{Cite journal |last1=Dedrick |first1=Cayla M. |last2=Fulton |first2=Benjamin J. |last3=Knutson |first3=Heather A. |last4=Howard |first4=Andrew W. |last5=Beatty |first5=Thomas G. |last6=Cargile |first6=Phillip A. |last7=Gaudi |first7=B. Scott |last8=Hirsch |first8=Lea A. |last9=Kuhn |first9=Rudolf B. |last10=Lund |first10=Michael B. |last11=James |first11=David J. |last12=Kosiarek |first12=Molly R. |last13=Pepper |first13=Joshua |last14=Petigura |first14=Erik A. |last15=Rodriguez |first15=Joseph E. |date=2021-02-01 |title=Two Planets Straddling the Habitable Zone of the Nearby K Dwarf Gl 414A |journal=The Astronomical Journal |volume=161 |issue=2 |pages=86 |doi=10.3847/1538-3881/abd0ef |arxiv=2009.06503 |bibcode=2021AJ....161...86D |issn=0004-6256 |doi-access=free }}

style="background:#000000;" |

|HD 191939 f

|{{val

148|p=< }}

|{{sort|066738|{{val|2.1|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Orell-Miquel |first1=J. |last2=Nowak |first2=G. |last3=Murgas |first3=F. |last4=Palle |first4=E. |last5=Morello |first5=G. |last6=Luque |first6=R. |last7=Badenas-Agusti |first7=M. |last8=Ribas |first8=I. |last9=Lafarga |first9=M. |last10=Espinoza |first10=N. |last11=Morales |first11=J. C. |last12=Zechmeister |first12=M. |last13=Alqasim |first13=A. |last14=Cochran |first14=W. D. |last15=Gandolfi |first15=D. |date=2023-01-01 |title=HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone |url=https://ui.adsabs.harvard.edu/abs/2023A&A...669A..40O |journal=Astronomy and Astrophysics |volume=669 |pages=A40 |doi=10.1051/0004-6361/202244120 |arxiv=2211.00667 |bibcode=2023A&A...669A..40O |s2cid=253197272 |issn=0004-6361}}

style="background:#eda239;" |

| style="background:#000000;" |File:Saturn_-_April_25_2016_(37612580000).png

|Saturn (For reference)

|{{val

140}}

|{{sort|009500|{{val|95|u=Earth mass}}}}

|

|

|{{Cite web |title=Saturn Fact Sheet |url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/saturnfact.html |access-date=2023-12-11 |website=nssdc.gsfc.nasa.gov}}

style="background:#000000;" |

|Kepler-167 e

|{{val

138.6|5}}

|{{sort|032097|{{val|1.01|u=Jupiter mass}}}}

| rowspan="7" |Teq

|

|{{Cite journal |last1=Chachan |first1=Yayaati |last2=Dalba |first2=Paul A. |last3=Knutson |first3=Heather A. |last4=Fulton |first4=Benjamin J. |last5=Thorngren |first5=Daniel |last6=Beichman |first6=Charles |last7=Ciardi |first7=David R. |last8=Howard |first8=Andrew W. |last9=Van Zandt |first9=Judah |date=2022-02-01 |title=Kepler-167e as a Probe of the Formation Histories of Cold Giants with Inner Super-Earths |journal=The Astrophysical Journal |volume=926 |issue=1 |pages=62 |doi=10.3847/1538-4357/ac3ed6 |arxiv=2112.00747 |bibcode=2022ApJ...926...62C |issn=0004-637X |doi-access=free }}

style="background:#000000;" |

|HD 115954 b

|{{val

128.1|8.1|13}}

|{{sort|263456|{{val|8.29|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Demangeon |first1=O. D. S. |last2=Dalal |first2=S. |last3=Hébrard |first3=G. |last4=Nsamba |first4=B. |last5=Kiefer |first5=F. |last6=Camacho |first6=J. D. |last7=Sahlmann |first7=J. |last8=Arnold |first8=L. |last9=Astudillo-Defru |first9=N. |last10=Bonfils |first10=X. |last11=Boisse |first11=I. |last12=Bouchy |first12=F. |last13=Bourrier |first13=V. |last14=Campante |first14=T. |last15=Delfosse |first15=X. |date=2021-09-01 |title=The SOPHIE search for northern extrasolar planets. XVIII. Six new cold Jupiters, including one of the most eccentric exoplanet orbits |url=https://ui.adsabs.harvard.edu/abs/2021A&A...653A..78D |journal=Astronomy and Astrophysics |volume=653 |pages=A78 |doi=10.1051/0004-6361/202141079 |arxiv=2107.05089 |bibcode=2021A&A...653A..78D |s2cid=235795175 |issn=0004-6361}}

style="background:#000000;" |

|HD 118203 c

|{{val

127|3}}

|{{sort|352758|{{val|11.1|1.3|1.0|u=Jupiter mass}}}}

|

|{{cite journal |last1=Maciejewski |first1=G. |last2=Niedzielski |first2=A. |display-authors=etal |date=July 2024 |title=Tracking Advanced Planetary Systems (TAPAS) with HARPS-N VIII. A wide-orbit planetary companion in the hot-Jupiter system HD 118203 |journal=Astronomy & Astrophysics |volume= |issue= |pages= |doi= 10.1051/0004-6361/202451084|arxiv=2407.11706}}

style="background:#000000;" |

|GJ 1289 b

|{{val

123}}

|{{sort|000627|{{val|6.27|1.25|u=Earth mass|p=>}}}}

|

|{{cite journal|last1=Moutou|first1=C.|last2=Ould-Elhkim|first2=M.|last3=Donati|first3=J.-F.|last4=Charpentier|first4=P.|last5=Cadieux|first5=C.|last6=Delfosse|first6=X.|last7=Artigau|first7=E.|last8=Arnold|first8=L.|last9=Baruteau|first9=C.|last10=Carmona|first10=A.|last11=Cook|first11=N. J.|last12=Cortes-Zuleta|first12=P.|last13=Doyon|first13=R.|last14=Hebrard|first14=G.|date=14 June 2024|title=Characterising planetary systems with SPIRou: Temperate sub-Neptune exoplanet orbiting the nearby fully convective star GJ 1289 and a candidate around GJ 3378|journal=Astronomy & Astrophysics |volume=688 |pages=A196 |doi=10.1051/0004-6361/202450466 |arxiv=2406.10384v1|bibcode=2024A&A...688A.196M }}

style="background:#000000;" |File:Epsilon_Eridani_b.jpg

|Epsilon Eridani b (AEgir)

|{{val

123}}

|{{sort|020000|{{val|0.63|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Mawet |first1=Dimitri |last2=Hirsch |first2=Lea |last3=Lee |first3=Eve J. |author3-link=Eve Lee|last4=Ruffio |first4=Jean-Baptiste |last5=Bottom |first5=Michael |last6=Fulton |first6=Benjamin J. |last7=Absil |first7=Olivier |last8=Beichman |first8=Charles |last9=Bowler |first9=Brendan |last10=Bryan |first10=Marta |last11=Choquet |first11=Elodie |last12=Ciardi |first12=David |last13=Christiaens |first13=Valentin |last14=Defrère |first14=Denis |last15=Gonzalez |first15=Carlos Alberto Gomez |date=2019-01-03 |title=Deep exploration of $\epsilon$ Eridani with Keck Ms-band vortex coronagraphy and radial velocities: mass and orbital parameters of the giant exoplanet |journal=The Astronomical Journal |volume=157 |issue=1 |pages=33 |doi=10.3847/1538-3881/aaef8a |arxiv=1810.03794 |issn=1538-3881 |doi-access=free }}{{Cite journal |last=Fritz Benedict |first=G. |date=2022-03-09 |title=Revisiting HST/FGS Astrometry of ϵ Eridani* |journal=Research Notes of the AAS |volume=6 |issue=3 |pages=45 |doi=10.3847/2515-5172/ac5b6b |bibcode=2022RNAAS...6...45B |issn=2515-5172 |doi-access=free }}

style="background:#000000;" |

|HD 164922 b

|{{val

114}}

|{{sort|011600|{{val|0.365|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Benatti |first1=S. |last2=Damasso |first2=M. |last3=Desidera |first3=S. |last4=Marzari |first4=F. |last5=Biazzo |first5=K. |last6=Claudi |first6=R. |last7=Di Mauro |first7=M. P. |last8=Lanza |first8=A. F. |last9=Pinamonti |first9=M. |last10=Barbato |first10=D. |last11=Malavolta |first11=L. |last12=Poretti |first12=E. |last13=Sozzetti |first13=A. |last14=Affer |first14=L. |last15=Bignamini |first15=A. |date=2020-07-01 |title=The GAPS programme at TNG. XXIII. HD 164922 d: close-in super-Earth discovered with HARPS-N in a system with a long-period Saturn mass companion |url=https://ui.adsabs.harvard.edu/abs/2020A&A...639A..50B |journal=Astronomy and Astrophysics |volume=639 |pages=A50 |doi=10.1051/0004-6361/202037939 |arxiv=2005.03368 |bibcode=2020A&A...639A..50B |s2cid=55707328 |issn=0004-6361}}{{Cite journal |last1=Fulton |first1=Benjamin J. |last2=Howard |first2=Andrew W. |last3=Weiss |first3=Lauren M. |last4=Sinukoff |first4=Evan |last5=Petigura |first5=Erik A. |last6=Isaacson |first6=Howard |last7=Hirsch |first7=Lea |last8=Marcy |first8=Geoffrey W. |last9=Henry |first9=Gregory W. |last10=Grunblatt |first10=Samuel K. |last11=Huber |first11=Daniel |last12=Braun |first12=Kaspar von |last13=Boyajian |first13=Tabetha S. |last14=Kane |first14=Stephen R. |last15=Wittrock |first15=Justin |date=2016-10-10 |title=Three Temperate Neptunes Orbiting Nearby Stars |journal=The Astrophysical Journal |volume=830 |issue=1 |pages=46 |doi=10.3847/0004-637x/830/1/46 |arxiv=1607.00007 |bibcode=2016ApJ...830...46F |issn=1538-4357 |doi-access=free }}

style="background:#000000;" |

|Teegarden's Star d

|{{val

114}}

|{{sort|00082|{{val|0.82|u=Earth mass|p=>}}}}

|One of the nearest exoplanets.

|{{Citation |last1=Dreizler |first1=S. |title=Teegarden's Star revisited: A nearby planetary system with at least three planets |date=2024-02-01 |arxiv=2402.00923 |last2=Luque |first2=R. |last3=Ribas |first3=I. |last4=Koseleva |first4=V. |last5=Ruh |first5=H. L. |last6=Nagel |first6=E. |last7=Pozuelos |first7=F. J. |last8=Zechmeister |first8=M. |last9=Reiners |first9=A.}}

style="background:#eda239;" |

| style="background:#000000;" |File:Jupiter_and_its_shrunken_Great_Red_Spot.jpg

|Jupiter (For reference)

|{{val

110}}

|{{sort|031780|{{val|317.8|u=Earth mass}}}} ({{val|1|u=Jupiter mass|ul=}})

|

|

|{{Cite web |title=Jupiter Fact Sheet |url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/jupiterfact.html |access-date=2023-12-11 |website=nssdc.gsfc.nasa.gov}}

style="background:#000000;" |File:PSR_B1257+12_C.jpg

|{{Nowrap|PSR B1257+12 d}} (Phobetor)

|{{val

104}}

|{{sort|000390|{{val|3.9|u=Earth mass}}}}

| rowspan="10" |Teq

|One of the first exoplanets discovered.

|[http://www.extrasolar.net/planettour.asp?PlanetID=28 Extrasolar Visions - PSR 1257+12 C] {{webarchive|url=https://web.archive.org/web/20101226042333/http://extrasolar.net/planettour.asp?PlanetID=28 |date=December 26, 2010 }}

style="background:#000000;" |File:HR_5183_b.png

|HR 5183 b

|{{val

102|5.2|5.1}}

|{{sort|102649|{{val|3.23|u=Jupiter mass}}}}

|A highly-eccentric orbit planet.

|{{Cite journal |last1=Blunt |first1=Sarah |last2=Endl |first2=Michael |last3=Weiss |first3=Lauren M. |last4=Cochran |first4=William D. |last5=Howard |first5=Andrew W. |last6=MacQueen |first6=Phillip J. |last7=Fulton |first7=Benjamin J. |last8=Henry |first8=Gregory W. |last9=Johnson |first9=Marshall C. |last10=Kosiarek |first10=Molly R. |last11=Lawson |first11=Kellen D. |last12=Macintosh |first12=Bruce |last13=Mills |first13=Sean M. |last14=Nielsen |first14=Eric L. |last15=Petigura |first15=Erik A. |date=2019-11-01 |title=Radial Velocity Discovery of an Eccentric Jovian World Orbiting at 18 au |journal=The Astronomical Journal |volume=158 |issue=5 |pages=181 |doi=10.3847/1538-3881/ab3e63 |arxiv=1908.09925 |bibcode=2019AJ....158..181B |issn=0004-6256 |doi-access=free }}

style="background:#000000;" |File:TRAPPIST-1h_artist_impression_2018.png

|{{Nowrap|TRAPPIST-1h}}

|{{val

101.5}}

|{{sort|000033|{{val|0.326|u=Earth mass}}}}

|

|{{Cite journal |last1=Ducrot |first1=Elsa |last2=Gillon |first2=M. |last3=Delrez |first3=L. |last4=Agol |first4=E. |last5=Rimmer |first5=P. |last6=Turbet |first6=M. |last7=Günther |first7=M. N. |last8=Demory |first8=B.-O. |last9=Triaud |first9=A. H. M. J. |last10=Bolmont |first10=E. |last11=Burgasser |first11=A. |last12=Carey |first12=S. J. |last13=Ingalls |first13=J. G. |last14=Jehin |first14=E. |last15=Leconte |first15=J. |date=August 2020 |title=TRAPPIST-1: Global Results of the Spitzer Exploration Science Program {\it Red Worlds} |journal=Astronomy & Astrophysics |volume=640 |pages=A112 |doi=10.1051/0004-6361/201937392 |arxiv=2006.13826 |s2cid=220041987 |issn=0004-6361}}

style="background:#000000;" |

|TOI-4010 e

|{{val

99|8|6}}

|{{sort|069208|{{val|2.18|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Kunimoto |first1=Michelle |last2=Vanderburg |first2=Andrew |last3=Huang |first3=Chelsea X. |last4=Davis |first4=M. Ryleigh |last5=Affer |first5=Laura |last6=Cameron |first6=Andrew Collier |last7=Charbonneau |first7=David |last8=Cosentino |first8=Rosario |last9=Damasso |first9=Mario |last10=Dumusque |first10=Xavier |last11=Fiorenzano |first11=A. F. Martnez |last12=Ghedina |first12=Adriano |last13=Haywood |first13=R. D. |last14=Lienhard |first14=Florian |last15=López-Morales |first15=Mercedes |date=2023-07-01 |title=TOI-4010: A System of Three Large Short-period Planets with a Massive Long-period Companion |journal=The Astronomical Journal |volume=166 |issue=1 |pages=7 |doi=10.3847/1538-3881/acd537 |arxiv=2306.05308 |bibcode=2023AJ....166....7K |issn=0004-6256 |doi-access=free }}

style="background:#000000;" |

|HATS-59 c

|{{val

97.1|6.4}}

|{{sort|403606|{{val|12.7|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Sarkis |first1=P. |last2=Henning |first2=Th. |last3=Hartman |first3=J. D. |last4=Bakos |first4=G. Á. |last5=Brahm |first5=R. |last6=Jordán |first6=A. |last7=Bayliss |first7=D. |last8=Mancini |first8=L. |last9=Espinoza |first9=N. |last10=Rabus |first10=M. |last11=Csubry |first11=Z. |last12=Bhatti |first12=W. |last13=Penev |first13=K. |last14=Zhou |first14=G. |last15=Bento |first15=J. |date=2018-11-01 |title=HATS-59b,c: A Transiting Hot Jupiter and a Cold Massive Giant Planet around a Sun-like Star |journal=The Astronomical Journal |volume=156 |issue=5 |pages=216 |doi=10.3847/1538-3881/aade54 |arxiv=1805.05925 |bibcode=2018AJ....156..216S |issn=0004-6256 |doi-access=free }}

style="background:#000000;" |

|HD 86226 b

|{{val

97|4}}

|{{sort|014301|{{val|0.45|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Teske |first1=Johanna |last2=Díaz |first2=Matías R. |last3=Luque |first3=Rafael |last4=Močnik |first4=Teo |last5=Seidel |first5=Julia V. |last6=Otegi |first6=Jon Fernández |last7=Feng |first7=Fabo |last8=Jenkins |first8=James S. |last9=Pallè |first9=Enric |last10=Ségransan |first10=Damien |last11=Udry |first11=Stèphane |last12=Collins |first12=Karen A. |last13=Eastman |first13=Jason D. |last14=Ricker |first14=George R. |last15=Vanderspek |first15=Roland |date=2020-08-01 |title=TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet |journal=The Astronomical Journal |volume=160 |issue=2 |pages=96 |doi=10.3847/1538-3881/ab9f95 |arxiv=2007.13927 |bibcode=2020AJ....160...96T |issn=0004-6256 |doi-access=free }}

style="background:#000000;" |

|GJ 1002 c

|{{val

91.3|5.2}}{{Efn|This is the surface temperature if GJ 1002 c has no atmosphere.|name=Atmosphere 2}}

|{{sort|000136|{{val|1.36|u=Earth mass}}}}

|Orbits within its star's habitable zone.

|{{Cite journal |last1=Suárez Mascareño |first1=A. |last2=González-Álvarez |first2=E. |last3=Zapatero Osorio |first3=M. R. |last4=Lillo-Box |first4=J. |last5=Faria |first5=J. P. |last6=Passegger |first6=V. M. |last7=González Hernández |first7=J. I. |last8=Figueira |first8=P. |last9=Sozzetti |first9=A. |last10=Rebolo |first10=R. |last11=Pepe |first11=F. |last12=Santos |first12=N. C. |last13=Cristiani |first13=S. |last14=Lovis |first14=C. |last15=Silva |first15=A. M. |date=2023-02-01 |title=Two temperate Earth-mass planets orbiting the nearby star GJ 1002 |url=https://ui.adsabs.harvard.edu/abs/2023A&A...670A...5S |journal=Astronomy and Astrophysics |volume=670 |pages=A5 |doi=10.1051/0004-6361/202244991 |arxiv=2212.07332 |bibcode=2023A&A...670A...5S |s2cid=254353639 |issn=0004-6361}}

style="background:#000000;" |

|{{Nowrap|EPIC 248847494 b}}

|{{val

90|25|18}}

|{{sort|413140|{{val|13|p=<|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Giles |first1=H. A. C. |last2=Osborn |first2=H. P. |last3=Blanco-Cuaresma |first3=S. |last4=Lovis |first4=C. |last5=Bayliss |first5=D. |last6=Eggenberger |first6=P. |last7=Collier Cameron |first7=A. |last8=Kristiansen |first8=M. H. |last9=Turner |first9=O. |last10=Bouchy |first10=F. |last11=Udry |first11=S. |date=2018-07-01 |title=Transiting planet candidate from K2 with the longest period |url=https://ui.adsabs.harvard.edu/abs/2018A&A...615L..13G |journal=Astronomy and Astrophysics |volume=615 |pages=L13 |doi=10.1051/0004-6361/201833569 |arxiv=1806.08757 |bibcode=2018A&A...615L..13G |s2cid=119105813 |issn=0004-6361}}

style="background:#000000;" |

|Kepler-421b

|{{val

88.2|8.6|4.8}}

|

|The transiting exoplanet with the longest orbital period. (704 days){{Cite web |title=Transiting Exoplanet with Longest Known Year |url=https://exoplanets.nasa.gov/resources/179/transiting-exoplanet-with-longest-known-year/ |website=exoplanets.nasa.gov|date=21 July 2014 }}

|{{Cite journal |last1=Kipping |first1=D. M. |last2=Torres |first2=G. |last3=Buchhave |first3=L. A. |last4=Kenyon |first4=S. J. |last5=Henze |first5=C. |last6=Isaacson |first6=H. |last7=Kolbl |first7=R. |last8=Marcy |first8=G. W. |last9=Bryson |first9=S. T. |last10=Stassun |first10=K. |last11=Bastien |first11=F. |date=2014-11-01 |title=Discovery of a Transiting Planet near the Snow-line |url=https://ui.adsabs.harvard.edu/abs/2014ApJ...795...25K |journal=The Astrophysical Journal |volume=795 |issue=1 |pages=25 |doi=10.1088/0004-637X/795/1/25 |arxiv=1407.4807 |bibcode=2014ApJ...795...25K |s2cid=119240746 |issn=0004-637X}}

style="background:#000000;" |

|HD 192310 c

|{{val

88}}

|{{sort|002400|{{val|24|u=Earth mass}}}}

|

|{{Cite journal |last1=Pepe |first1=F. |last2=Lovis |first2=C. |last3=Ségransan |first3=D. |last4=Benz |first4=W. |last5=Bouchy |first5=F. |last6=Dumusque |first6=X. |last7=Mayor |first7=M. |last8=Queloz |first8=D. |last9=Santos |first9=N. C. |last10=Udry |first10=S. |date=2011-10-01 |title=The HARPS search for Earth-like planets in the habitable zone. I. Very low-mass planets around HD 20794, HD 85512, and HD 192310 |journal=Astronomy and Astrophysics |volume=534 |pages=A58 |doi=10.1051/0004-6361/201117055 |issn=0004-6361|doi-access=free |arxiv=1108.3447 |bibcode=2011A&A...534A..58P }}

style="background:#000000;" |File:Artist’s_impression_of_WD_1856b_(noirlab2023a).jpg

|WD 1856+534 b

|{{val

87|6|7}}

|{{sort|438564|{{val|6|p=<|u=Jupiter mass}}}}

|Teff

| Coldest exoplanet with a measured temperature.{{cite arXiv |eprint=2504.16982 |author1=Mary Anne Limbach |last2=Vanderburg |first2=Andrew |last3=MacDonald |first3=Ryan J. |last4=Stevenson |first4=Kevin B. |last5=Jenkins |first5=Sydney |last6=Blouin |first6=Simon |last7=Rauscher |first7=Emily |last8=Bowens-Rubin |first8=Rachel |last9=Gallo |first9=Elena |last10=Mang |first10=James |last11=Morley |first11=Caroline V. |last12=Sing |first12=David K. |last13=O'Connor |first13=Christopher |last14=Venner |first14=Alexander |last15=Xu |first15=Siyi |title=Thermal Emission and Confirmation of the Frigid White Dwarf Exoplanet WD 1856+534b |date=2025 |class=astro-ph.EP }}

|

style="background:#000000;" |File:Kepler-16b.jpg

|Kepler-16b

|{{val

85}}

|{{sort|010582|{{val|0.333|u=Jupiter mass}}}}

| rowspan="6" |Teq

|{{Nowrap|A circumbinary planet.}}

|{{Cite journal |last1=Doyle |first1=Laurance R. |last2=Carter |first2=Joshua A. |last3=Fabrycky |first3=Daniel C. |last4=Slawson |first4=Robert W. |last5=Howell |first5=Steve B. |last6=Winn |first6=Joshua N. |last7=Orosz |first7=Jerome A. |last8=Prsa |first8=Andrej |last9=Welsh |first9=William F. |last10=Quinn |first10=Samuel N. |last11=Latham |first11=David |last12=Torres |first12=Guillermo |last13=Buchhave |first13=Lars A. |last14=Marcy |first14=Geoffrey W. |last15=Fortney |first15=Jonathan J. |date=2011-09-16 |title=Kepler-16: A Transiting Circumbinary Planet |journal=Science |volume=333 |issue=6049 |pages=1602–1606 |doi=10.1126/science.1210923 |pmid=21921192 |arxiv=1109.3432 |bibcode=2011Sci...333.1602D |s2cid=206536332 |issn=0036-8075}}

style="background:#000000;" |File:Kepler186f-ArtistConcept-20140417.jpg

|Kepler-186f

|{{val

85}}{{Efn|This is the surface temperature if Kepler-186f has no atmosphere.|name=Atmosphere}}

|{{sort|000144|{{val|1.44|u=Earth mass}}}}

|Potentially habitable

|{{Cite web |title=PHL @ UPR Arecibo - The Habitable Exoplanets Catalog |url=https://phl.upr.edu/projects/habitable-exoplanets-catalog |access-date=2023-12-11 |website=phl.upr.edu |language=en-US}}{{Cite journal |last1=Quintana |first1=Elisa V. |last2=Barclay |first2=Thomas |last3=Raymond |first3=Sean N. |last4=Rowe |first4=Jason F. |last5=Bolmont |first5=Emeline |last6=Caldwell |first6=Douglas A. |last7=Howell |first7=Steve B. |last8=Kane |first8=Stephen R. |last9=Huber |first9=Daniel |last10=Crepp |first10=Justin R. |last11=Lissauer |first11=Jack J. |last12=Ciardi |first12=David R. |last13=Coughlin |first13=Jeffrey L. |last14=Everett |first14=Mark E. |last15=Henze |first15=Christopher E. |date=2014-04-18 |title=An Earth-sized Planet in the Habitable Zone of a Cool Star |journal=Science |volume=344 |issue=6181 |pages=277–280 |doi=10.1126/science.1249403 |pmid=24744370 |arxiv=1404.5667 |bibcode=2014Sci...344..277Q |s2cid=1892595 |issn=0036-8075}}

style="background:#000000;" |

|TOI-4600 c

|{{val

82|6}}

|{{sort|294600|{{val|9.27|p=<|u=Jupiter mass}}}}

|

|{{Cite journal |last1=Mireles |first1=Ismael |last2=Dragomir |first2=Diana |last3=Osborn |first3=Hugh P. |last4=Hesse |first4=Katharine |last5=Collins |first5=Karen A. |last6=Villanueva |first6=Steven |last7=Bieryla |first7=Allyson |last8=Ciardi |first8=David R. |last9=Stassun |first9=Keivan G. |last10=Harris |first10=Mallory |last11=Lissauer |first11=Jack J. |last12=Schwarz |first12=Richard P. |last13=Srdoc |first13=Gregor |last14=Barkaoui |first14=Khalid |last15=Riffeser |first15=Arno |date=2023-09-01 |title=TOI-4600 b and c: Two Long-period Giant Planets Orbiting an Early K Dwarf |journal=The Astrophysical Journal |volume=954 |issue=1 |pages=L15 |doi=10.3847/2041-8213/aceb69 |arxiv=2308.15572 |bibcode=2023ApJ...954L..15M |issn=0004-637X |doi-access=free }}

style="background:#000000;" |File:PSR_B1257+12_B.jpg

|{{Nowrap|PSR B1257+12 c}} (Poltergeist)

|{{val

80}}

|{{sort|000430|{{val|4.3|u=Earth mass}}}}

|One of the first exoplanets discovered.

|[http://www.extrasolar.net/planettour.asp?PlanetID=27 Extrasolar Visions - PSR 1257+12 B] {{webarchive|url=https://web.archive.org/web/20101226042054/http://extrasolar.net/planettour.asp?PlanetID=27 |date=December 26, 2010 |data=26 dicembre 2010 }}

style="background:#000000;" |File:Gliese-876_b.png

|Gliese 876 b

|{{val

79}}

|{{sort|083564|{{val|2.66|u=Jupiter mass}}}}

|

|{{Cite web |url=http://www.hpcf.upr.edu/~abel/phl/hec_plots/hec_orbit/hec_orbit_Gliese_876_b.png |title=Archived copy |access-date=2016-08-03 |archive-date=2016-08-19 |archive-url=https://web.archive.org/web/20160819193939/http://www.hpcf.upr.edu/~abel/phl/hec_plots/hec_orbit/hec_orbit_Gliese_876_b.png |url-status=live }}{{Cite journal |last1=Millholland |first1=Sarah |last2=Laughlin |first2=Gregory |last3=Teske |first3=Johanna |last4=Butler |first4=R. Paul |last5=Burt |first5=Jennifer |last6=Holden |first6=Bradford |last7=Vogt |first7=Steven |last8=Crane |first8=Jeffrey |last9=Shectman |first9=Stephen |last10=Thompson |first10=Ian |date=2018-02-08 |title=New Constraints on Gliese 876 -- Exemplar of Mean-Motion Resonance |journal=The Astronomical Journal |volume=155 |issue=3 |pages=106 |doi=10.3847/1538-3881/aaa894 |arxiv=1801.07831 |bibcode=2018AJ....155..106M |issn=1538-3881 |doi-access=free }}

style="background:#000000;" |File:TRAPPIST-1g_artist_impression_2018.png

|TRAPPIST-1g

|{{val

75.8}}{{Efn|This is the surface temperature if TRAPPIST-1g has no atmosphere.|name=Atmosphere Trappist-1g}}

|{{sort|000132|{{Val|1.321|u=Earth mass}}}}

|Potentially habitable

|{{Cite journal |last1=Agol |first1=Eric |last2=Dorn |first2=Caroline |last3=Grimm |first3=Simon L. |last4=Turbet |first4=Martin |last5=Ducrot |first5=Elsa |last6=Delrez |first6=Laetitia |last7=Gillon |first7=Michaël |last8=Demory |first8=Brice-Olivier |last9=Burdanov |first9=Artem |last10=Barkaoui |first10=Khalid |last11=Benkhaldoun |first11=Zouhair |last12=Bolmont |first12=Emeline |last13=Burgasser |first13=Adam |last14=Carey |first14=Sean |last15=Wit |first15=Julien de |date=2021-01-22 |title=Refining the Transit-timing and Photometric Analysis of TRAPPIST-1: Masses, Radii, Densities, Dynamics, and Ephemerides |journal=The Planetary Science Journal |language=en |volume=2 |issue=1 |pages=1 |doi=10.3847/PSJ/abd022 |arxiv=2010.01074 |bibcode=2021PSJ.....2....1A |issn=2632-3338 |doi-access=free }}

style="background:#000000;" |

|HD 217107 c

|{{Val

75|3}}

|{{sort|138879|{{val|4.37|0.13|0.10|u=Jupiter mass}}}}

|Teff

|

|

Unconfirmed planets

These exoplanets have not been confirmed.

class="wikitable sortable article-table"

!Image

(Or artistic representation)

!Name

!Temperature

!Mass{{Efn|M: Earth mass

MJ: Jupiter mass|name=Mass|group=}}

!Notes

!References

style="background:#000000;"|

|K01174.01

| -248 (25 K)

|

| Has a size of {{Jupiter radius|0.267}}

| {{cite web | url=https://exoplanet.eu/catalog/k01174_01--4133/ | title=Planet K01174.01 | date=1995 }}

style="background:#000000;"|File:Proxima_Centauri_c.png

|{{Nowrap|Proxima Centauri c}}

|{{val|234.2}} ({{Val|38.8|u=K}})

|{{Val|7|u=Earth mass}}

|

|{{Cite journal |last1=Benedict |first1=G. Fritz |last2=McArthur |first2=Barbara E. |date=June 2020 |title=A Moving Target—Revising the Mass of Proxima Centauri c* |journal=Research Notes of the AAS |language=en |volume=4 |issue=6 |pages=86 |doi=10.3847/2515-5172/ab9ca9 |bibcode=2020RNAAS...4...86B |issn=2515-5172 |doi-access=free }}{{Cite journal |last1=Damasso |first1=Mario |last2=Del Sordo |first2=Fabio |last3=Anglada-Escudé |first3=Guillem |last4=Giacobbe |first4=Paolo |last5=Sozzetti |first5=Alessandro |last6=Morbidelli |first6=Alessandro |last7=Pojmanski |first7=Grzegorz |last8=Barbato |first8=Domenico |last9=Butler |first9=R. Paul |last10=Jones |first10=Hugh R. A. |last11=Hambsch |first11=Franz-Josef |last12=Jenkins |first12=James S. |last13=López-González |first13=María José |last14=Morales |first14=Nicolás |last15=Peña Rojas |first15=Pablo A. |date=2020-01-01 |title=A low-mass planet candidate orbiting Proxima Centauri at a distance of 1.5 AU |journal=Science Advances |volume=6 |issue=3 |pages=eaax7467 |doi=10.1126/sciadv.aax7467|pmid=31998838 |pmc=6962037 |bibcode=2020SciA....6.7467D }}

Notes and references

{{reflist|group=lower-alpha}}

{{reflist|group=note}}

{{DEFAULTSORT:Coolest exoplanets}}

Category:Lists of superlatives in astronomy

Category:Lists of exoplanets