CoRoT-21b is a transiting exoplanet reportedly found by the CoRoT space telescope in 2011.
[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.
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.