Wikipedia

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 edit

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.

Methods for finding 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 edit

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 edit

  1. ^ Assuming albedo of 0.1
  2. ^ Assuming albedo of 0.1
  3. ^ Assuming bond albedo of 0.25

References edit

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