Astronomy:CoRoT-20
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Monoceros |
| Right ascension | 06h 30m 52,900s |
| Declination | +00° 13′ 36.85″ |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Spectral type | G2V |
| Variable type | planetary transit |
| Astrometry | |
| Details | |
| Mass | 1.14 M☉ |
| Radius | 1.02 R☉ |
| Temperature | 5880 K |
| Age | 100 million years |
| Other designations | |
CoRoT-20 is a star, which is located in the constellation Monoceros at a distance of about 4011 light years from us. 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 our 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[1] the discovery of the planet CoRoT-20b and CoRoT-20c in this system. 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 M. Deleuil, A.S. Bonomo, S. Ferraz-Mello, A. Erikson, F. Bouchy, M. Havel, S. Aigrain, J.-M. Almenara, R. Alonso, M. Auvergne, A. Baglin, P. Barge, P. Bordé, H. Bruntt, J. Cabrera, S. Carpano, C. Cavarroc, Sz. Csizmadia, C. Damiani, H.J. Deeg, R. Dvorak, M. Fridlund, G. Hébrard, D. Gandolfi, M. Gillon, E. Guenther, T. Guillot, A. Hatzes, L. Jorda, A. Léger, H. Lammer, T. Mazeh, C. Moutou, M. Ollivier, A. Ofir, H. Parviainen, D. Queloz, H. Rauer, A. Rodríguez, D. Rouan, A. Santerne, J. Schneider, L. Tal-Or, B. Tingley, J. Weingrill, G. Wuchterl (2011-09-14). "XX. CoRoT-20b: A very high density, high eccentricity transiting giant planet". Arxiv.org. Archived from the original on 2012-09-01. https://www.webcitation.org/6AMdjLltZ?url=http://arxiv.org/abs/1109.3203. Retrieved 2011-10-27.
- ↑ "CoRoT-20 Planets in the system". http://www.openexoplanetcatalogue.com/planet/CoRoT-20%20b/. Retrieved February 25, 2019.
 |  |
