Astronomy:CoRoT-20
CoRoT-20 is a star, which is located in the constellation Monoceros at a distance of about 4011 light years from the Earth. The star is orbited by at least two planets.
Characteristics
CoRoT-20 is a very young star of 14.66 magnitude by astronomical standards. Its age is estimated at approximately 100 million years.[1] In terms of mass and radius, it is almost identical to the Sun. Its surface temperature is about 5880 kelvins. CoRoT-20 got its name thanks to the space telescope CoRoT, which discovered its two planets.
Planetary system
In 2011, a group of astronomers working within the CoRoT program announced the discovery of the planet CoRoT-20b and CoRoT-20c in this system.[1] It is a hot gas giant, more than four times the mass of Jupiter. However, the planet's radius is only 84% of Jupiter's, which indicates an average high density. CoRoT-20b and c both orbit close to its parent star - at a distance of 0.09 AU The discovery of the planet was made by transit method.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 4.3 MJ | 0.09 | — | 0.59 | — | — |
| c | 17 MJ | 2.9 | — | 0.6 | — | — |
References
- ↑ 1.0 1.1 Deleuil, M. et al. (2012). "Transiting exoplanets from the CoRoT space mission. XX. CoRoT-20b: A very high density, high eccentricity transiting giant planet". Astronomy and Astrophysics 538: A145. doi:10.1051/0004-6361/201117681. Bibcode: 2012A&A...538A.145D.
- ↑ "CoRoT-20 Planets in the system". http://www.openexoplanetcatalogue.com/planet/CoRoT-20%20b/. Retrieved February 25, 2019.
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