List of hottest exoplanets

This is a list of the hottest exoplanets so far discovered, specifically those with temperatures greater than 2,500 K (2,230 °C; 4,040 °F). For comparison, the hottest planet in the Solar System is Venus, with a temperature of 737 K (464 °C; 867 °F).

List

Methods for finding temperature:

• T_eff: Measured effective temperature.
• T_eq: The temperature of the planet has not been measured, so it is listed with the calculated equilibrium temperature.

Image (Or artistic representation)	Name	Temperature (K)	Mass	Method	Notes
	KELT-9b	4,643±26[1]	2.88 MJ[1]	Teff	Hottest known exoplanet, with a temperature comparable to K-type stars.
	AB Aurigae b	3,800[2]	9-12 MJ[3]
	55 Cancri e (Janssen)	3,771+669 −520[4]	7.99 M🜨[4]
	TOI-2109b	3,631±69[5]	5.02 MJ[5]
	WASP-189b	3,435±27[6]	1.99 MJ[6]
	TOI-1518b	3,237±59[7]	<2.3 MJ[7]
	WASP-103b	3,205±136[8]	1.455 MJ[8]
	KELT-16b	3,190±61[9]	2.75 MJ[9]
	WASP-12b	3,128±66[10]	1.465 MJ[10]		This planet is so close to its parent star that its tidal forces are distorting it into an egg shape.
	WASP-33b	3,108±113[8]	2.093 MJ[8]
	WASP-18b	3,067±104[8]	10.20 MJ[8]
	MASCARA-1b	3,062±67[11]	3.7 MJ[11]
	HATS-70b	2,730+140 −160[12]	12.9 MJ[12]	Teq
	WASP-100b	2,710[13]	2.03 MJ[13]	Teff
	HIP 78530 b	2,700±100[14]	23 MJ[14]		Likely a brown dwarf.
	MASCARA-5b	2,700[15]	3.12 MJ[15]
	WASP-76b	2,670 (dayside)[16]	0.92 MJ		In this tidally locked planet where winds move 18,000 km/h, molten iron rains from the sky due to daytime temperatures exceeding 2,400 °C (2,670 K).[17][18]
	HAT-P-7b	2,667±57[19]	1.682 MJ[19]
	GQ Lupi b	2,650±100[20]	20 MJ[20]		[20]Likely a brown dwarf.
	TOI-2260 b	2,609±86[12]		Teq
	CT Chamaelontis b	2,600±250[21]	17 MJ[21]	Teff	Likely a brown dwarf.
	HAT-P-70b	2,562+43 −52[12]	6.78 MJ[12]	Teq
	Kepler-13b	2,550±80 (2277 °C)[12]	9.78 MJ[12]
	The following well-known planets are listed for the purpose of comparison.
	Kepler-10b	2,130+60 −120 (1,857 °C)[22]	4.6 M🜨[22]	Teq
	TrES-4b	1,782±29 (1,509 °C)[23]	0.919 MJ[23]		One of the largest known exoplanets.
	CoRoT-7b	1,756±27 (1,483 °C)[24]	5.74 M🜨[24]
	Upsilon Andromedae b (Saffar)	1,673 (1,400 °C)[25]	1.7 MJ[26]	Teff
	WASP-17b (Ditsö̀)	1,550+170 −200 (1,277 °C)[27]	0.512 MJ[27]		With a density of about 0.08 g/cm3,[28] it is one of the puffiest exoplanets known.
	HD 209458 b (Osiris)	1,499±15 (1,226 °C)[29]	0.682 MJ[27]
	TrES-2b	1,466±9 (1,193 °C)[30]	1.253 MJ[30]	Teq	The darkest exoplanet known, reflecting less than 1% its star's light.
	Beta Pictoris b	1,451±15 (1,178 °C)[31]	11.729 MJ[32]	Teff
	51 Pegasi b (Dimidium)	1,265 (992 °C)	0.46 MJ	Teq	The first exoplanet discovered orbiting a main-sequence star.
	Kepler-20e	1,004±14 (735 °C)[33]	<0.76 M🜨[33]		The first planet smaller than Earth discovered after PSR B1257+12 b.
	Venus (for reference)	735 (462 °C)[34]	0.815 M🜨[34]		Hottest planet in the Solar System.

Unconfirmed candidates

These planet candidates have not been confirmed.

Image (Or artistic representation)	Name	Temperature (K)	Mass	Method
	Kepler-70b	7,662 [a]	0.44 M🜨	Teq
	Kepler-70c	6,807 [b]	0.655 M🜨
	Vega b	3,250[35][c]	21.9 M🜨

Notes

References

This page was last edited on 24 April 2024, at 10:56