Astronomy:KELT-20b
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.png) An artist's impression of ultra-hot Jupiter planet KELT-20b orbiting its host star. | |
| Discovery | |
|---|---|
| Discovery site | KELT |
| Discovery date | 2017 |
| Transit method | |
| Orbital characteristics | |
| 0.0542 AU | |
| Orbital period | 3.6127647 d = 3.474 |
| Inclination | 86.12 |
| Star | KELT-20 |
| Physical characteristics[1] | |
| Mean radius | 1.821 |♃|J}}}}}} |
| Mass | 3.355 |♃|J}}}}}} |
| Mean density | 0.737 g cm−3 |
KELT-20b, also known as MASCARA-2b, is an exoplanet announced in 2017. It is an Ultra-hot Jupiter orbiting an A-type star. The carbon monoxide, steam[2][3] and neutral iron[4] detection in the atmosphere of KELT-20b was announced in 2022.
Host star
The host star is an A-type main-sequence star in the constellation of Cygnus having 2.282 solar masses, 1.617 solar radius and an apparent magnitude of 7.58.
See also
- Kilodegree Extremely Little Telescope
- Multi-site All-Sky CAmeRA
References
- ↑ Saha, Suman (2023). "Precise Transit Photometry Using TESS: Updated Physical Properties for 28 Exoplanets Around Bright Stars". The Astrophysical Journal Supplement Series 268 (1): 2. doi:10.3847/1538-4365/acdb6b. Bibcode: 2023ApJS..268....2S.
- ↑ Fu, Guangwei; Sing, David K.; Lothringer, Joshua D.; Deming, Drake; Ih, Jegug; Kempton, Eliza M. -R.; Malik, Matej; Komacek, Thaddeus D. et al. (2022), "Strong H2O and CO Emission Features in the Spectrum of KELT-20b Driven by Stellar UV Irradiation", The Astrophysical Journal Letters 925 (1): L3, doi:10.3847/2041-8213/ac4968, Bibcode: 2022ApJ...925L...3F
- ↑ Kasper, David; Bean, Jacob L.; Line, Michael R.; Seifahrt, Andreas; Brady, Madison T.; Lothringer, Joshua; Pino, Lorenzo; Fu, Guangwei et al. (2023), "Unifying High- and Low-resolution Observations to Constrain the Dayside Atmosphere of KELT-20b/MASCARA-2b", The Astronomical Journal 165 (1): 7, doi:10.3847/1538-3881/ac9f40, Bibcode: 2023AJ....165....7K
- ↑ Yan, F.; Reiners, A.; Pallé, E.; Shulyak, D.; Stangret, M.; Molaverdikhani, K.; Nortmann, L.; Mollière, P. et al. (2022), "Detection of iron emission lines and a temperature inversion on the dayside of the ultra-hot Jupiter KELT-20b", Astronomy & Astrophysics 659: A7, doi:10.1051/0004-6361/202142395, Bibcode: 2022A&A...659A...7Y
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