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).
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:
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Name | Temperature (K) | Mass | Method | Notes | References |
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KELT-9b | 4,643±26 | 2.88 MJ | Teff | Hottest known exoplanet, with a temperature comparable to K-type stars. | [1] |
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AB Aurigae b | 3,800 | 9-12 MJ | [2][3] | ||
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55 Cancri e (Janssen) | 3,771+669 −520 |
7.99 M🜨 | [4] | ||
TOI-2109b | 3,631±69 | 5.02 MJ | [5] | |||
WASP-189b | 3,435±27 | 1.99 MJ | [6] | |||
TOI-1518b | 3,237±59 | <2.3 MJ | [7] | |||
WASP-103b | 3,205±136 | 1.455 MJ | [8] | |||
KELT-16b | 3,190±61 | 2.75 MJ | [9] | |||
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WASP-12b | 3,128±66 | 1.465 MJ | This planet is so close to its parent star that its tidal forces are distorting it into an egg shape. | [10] | |
WASP-33b | 3,108±113 | 2.093 MJ | [8] | |||
WASP-18b | 3,067±104 | 10.20 MJ | [8] | |||
MASCARA-1b | 3,062±67 | 3.7 MJ | [11] | |||
HATS-70b | 2,730+140 −160 |
12.9 MJ | Teq | [12] | ||
WASP-100b | 2,710 | 2.03 MJ | Teff | [13] | ||
HIP 78530 b | 2,700±100 | 23 MJ | Likely a brown dwarf. | [14] | ||
MASCARA-5b | 2,700 | 3.12 MJ | [15] | |||
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WASP-76b | 2,670 (dayside) | 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).[16][17] | [18] | |
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HAT-P-7b | 2,667±57 | 1.682 MJ | [19] | ||
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GQ Lupi b | 2,650±100 | 20 MJ | Likely a brown dwarf. | [20] | |
TOI-2260 b | 2,609±86 | Teq | [12] | |||
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CT Chamaelontis b | 2,600±250 | 17 MJ | Teff | Likely a brown dwarf. | [21] |
HAT-P-70b | 2,562+43 −52 |
6.78 MJ | Teq | [12] | ||
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Kepler-13b | 2,550±80 (2277 °C) | 9.78 MJ | [12] | ||
The following well-known planets are listed for the purpose of comparison. | ||||||
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Kepler-10b | 2,130+60 −120 (1,857 °C) |
4.6 M🜨 | Teq | [22] | |
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TrES-4b | 1,782±29 (1,509 °C) | 0.919 MJ | One of the largest known exoplanets. | [23] | |
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CoRoT-7b | 1,756±27 (1,483 °C) | 5.74 M🜨 | [24] | ||
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Upsilon Andromedae b (Saffar) | 1,673 (1,400 °C) | 1.7 MJ | Teff | [25][26] | |
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WASP-17b (Ditsö̀) | 1,550+170 −200 (1,277 °C) |
0.512 MJ | With a density of about 0.08 g/cm3,[27] it is one of the puffiest exoplanets known. | [28] | |
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HD 209458 b (Osiris) | 1,499±15 (1,226 °C) | 0.682 MJ | [29][28] | ||
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TrES-2b | 1,466±9 (1,193 °C) | 1.253 MJ | Teq | The darkest exoplanet known, reflecting less than 1% its star's light. | [30] |
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Beta Pictoris b | 1,451±15 (1,178 °C) | 11.729 MJ | Teff | [31][32] | |
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51 Pegasi b (Dimidium) | 1,265 (992 °C) | 0.46 MJ | Teq | The first exoplanet discovered orbiting a main-sequence star. | |
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Kepler-20e | 1,004±14 (735 °C) | <0.76 M🜨 | The first planet smaller than Earth discovered after PSR B1257+12 b. | [33] | |
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Venus (for reference) | 735 (462 °C) | 0.815 M🜨 | Hottest planet in the Solar System. | [34] |
These planet candidates have not been confirmed.
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Name | Temperature (K) | Mass | Method | Notes and references |
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Kepler-70b | 7,662 | 0.44 M🜨 | Teq | [a] |
Kepler-70c | 6,807 | 0.655 M🜨 | [b] | ||
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Vega b | 3,250 | 21.9 M🜨 | [35][c] |