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CoRoT-21b

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Extrasolar planet
CoRoT-21b
Discovery
Discovered byCoRoT space telescope
Detection methodTransit
Orbital characteristics
Semi-major axis0.0417 AU (6,240,000 km)
Eccentricity0
Orbital period (sidereal)2.72474 d
Inclination86.8
StarCoRoT-21
Physical characteristics
Mean radius1.3 RJ
Mass2.26MJ
Temperature1857 K

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 MJ, a radius of 1.3 RJ, and a density of 1.37 g/cm.

The planet is experiencing extreme tidal forces, forcing its orbit to decay within 800 million years from now.

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

  1. ^ "Notes on CoRoT-21 b". Extrasolar Planets Encyclopaedia. Retrieved February 25, 2019.
  2. "COROT-21 Planets in the system". Retrieved February 25, 2019.
  3. 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
  4. Transiting exoplanets from the CoRoT space mission XXIII. CoRoT-21b: a doomed large Jupiter around a faint subgiant star
2012 in space
Space probe launches Space probes launched in 2013

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Exoplanets Exoplanets discovered in 2012
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