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CoRoT-21b is a transiting exoplanet reportedly found by the CoRoT space telescope in 2011. Planetary parameters were published in 2012.[3]

COROT-21b
Discovery
Discovered byCoRoT space telescope
Detection method
Transit
Orbital characteristics
Semi-major axis
0.0417 AU (6,240,000 km)[1]
Eccentricity0
Orbital period (sidereal)
2.72474[1] d
Inclination86.8[1]
StarCOROT-21
Physical characteristics
Mean radius
1.3 RJ
Mass2.26MJ
Temperature1857 K[2]

    It is an extremely hot Jupiter-like planet with an orbital period of 2.72 earth days. Its mass is equivalent to 2.26 Jupiter masses, 1.3 Jupiter radius, and has a density of 1.37 g/cm3. CoRoT-21b orbits a F8IV star with Te = 6200K, M = 1.29M☉, R = 1.945R☉, and near-solar metallicity. It has an estimated age between 3.6 and 4.6 Gyr.

    The planet is experiencing an extreme tidal forces forcing its orbit to decay within 800 million years from now.[4]


    References


    1. "Notes on CoRoT-21 b". Retrieved February 25, 2019.
    2. "COROT-21 Planets in the system". Retrieved February 25, 2019.
    3. Secondary eclipses in the CoRoT light curves A homogeneous search based on Bayesian model selection, 2012, arXiv:1211.5361
    4. Transiting exoplanets from the CoRoT space mission XXIII. CoRoT-21b: a doomed large Jupiter around a faint subgiant star

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