CoRoT-21b
| Discovery | |
|---|---|
| Discovered by | CoRoT space telescope |
| Transit | |
| Orbital characteristics | |
| 0.0417 AU (6,240,000 km)[1] | |
| Eccentricity | 0 |
| 2.72474[1] d | |
| Inclination | 86.8[1] |
| Star | CoRoT-21 |
| Physical characteristics | |
| 1.3 RJ | |
| Mass | 2.26MJ |
| Temperature | 1857 K[2] |
CoRoT-21b is a transiting exoplanet reportedly found by the CoRoT space telescope in 2011. Planetary parameters were published in 2012.[3]
It is an extremely hot Jupiter-like planet with an orbital period of 2.72 earth days. It has a mass equivalent to 2.26 MJ, a radius of 1.3 RJ, and a density of 1.37 g/cm3.
The planet is experiencing extreme tidal forces, forcing its orbit to decay within 800 million years from now.[4]
Host star
CoRoT-21b orbits CoRoT-21 in the constellation of Monoceros. It is an F-type subgiant star (spectral type F8IV) with an effective temperature of 6,200 K (5,930 °C; 10,700 °F), a mass of 1.29 M☉, a radius of 1.945 R☉, and a near-solar metallicity. It has an estimated age between 3.6 and 4.6 Gyr.
References
- ^ a b c "Notes on CoRoT-21 b". Extrasolar Planets Encyclopaedia. Retrieved February 25, 2019.
- ^ "COROT-21 Planets in the system". Retrieved February 25, 2019.
- ^ Parviainen, H.; Deeg, H. J.; Belmonte, J. A. (2012), "Secondary eclipses in the CoRoT light curves", Astronomy & Astrophysics, 550: A67, arXiv:1211.5361, doi:10.1051/0004-6361/201220081, S2CID 54985515
- ^ Transiting exoplanets from the CoRoT space mission XXIII. CoRoT-21b: a doomed large Jupiter around a faint subgiant star
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