ExoAtmospheres
IAC community database for exoplanet atmospheric observations
KELT-20 b
| Planet status | Confirmed |
|---|---|
| Planet type | UltraHot Jupiter |
| Period | 3.4741085 d |
| Mass | 3.518 MJ 1118.0204 M⊕ |
| Radius | 1.83 RJ 20.496 R⊕ |
| Semi major axis | 0.0542 AU |
| Star name | KELT-20 |
| Star distance | 136.426 pc |
| Star teff | 8981 K |
| Star radius | 1.561 R☉ |
| Temperature (calculated) | 2230 K |
| V | 7.58 mag |
| J | 7.424 mag |
| K | 7.415 mag |
| Alternate names | HD 185603 b, MASCARA-2 b, KELT-20 b/MASCARA-2 b |
| Exoplanet Encyclopaedia |  |
Molecules
H: Detection Mg: Detection Na: Detection Fe: Detection Cr: Detection Fe+: Detection Cr+: Upper limit K: Detection Ca: Detection V: Detection Mn: Detection Ba+: Detection
|
G-B: High resolution IR | The GAPS programme at TNG LXXVIII. Phase-resolved detection of multiple atomic species in the atmosphere of KELT-20b/MASCARA-2b2026, F. Biassoni, F. Borsa et al. |
Tentative detection of Pr |
Ca: Detection Ni: Detection Molecular ratios: C/O, etc...: Detection
|
G-B: High resolution visible | PEPSI Investigation, Retrieval, and Atlas of Numerous Giant Atmospheres (PIRANGA). IV. High-Resolution Phased-Resolved Spectroscopy of The Ultra Hot Jupiter KELT-20 b2025, Victoria Bonidie, Marshall C. Johnson et al. |
|
Rayleigh Scattering: Detection
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HST-COS | HST-COS Transit Spectroscopy of KELT-20b: First Detection of Excess Far-ultraviolet Absorption From an Ultra-hot Jupiter2025, Patrick R. Behr, Kevin France et al. |
FUV transit depth increases with decreasing wavelengths |
H2O: Detection Rayleigh Scattering: Detection
|
HST STIS | Strong NUV Refractory Absorption and Dissociated Water in the Hubble Transmission Spectrum of the Ultra Hot Jupiter KELT-20 b2025, Yayaati Chachan, Joshua Lothringer et al. |