| CoRoT-21b | |
| Discoverer: | CoRoT space telescope |
| Discovery Method: | Transit |
| Apsis: | astron |
| Semimajor: | 0.0417AU[1] |
| Eccentricity: | 0 |
| Period: | 2.72474 d |
| Inclination: | 86.8 |
| Star: | CoRoT-21 |
| Mean Radius: | 1.3 |
| Mass: | 2.26 |
| Single 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.
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, a radius of 1.3, 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.[3]
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 6200K, a mass of 1.29, a radius of 1.945, and a near-solar metallicity. It has an estimated age between 3.6 and 4.6 Gyr.