CoRoT-20

CoRoT-20
Observation data; Epoch J2000.0 Equinox J2000.0
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
	2MASS J06305289+0013369

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.

The CoRoT-20 planetary system[2]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	4.3 M_J	0.09	—	0.59	—	—
c	17 M_J	2.9	—	0.6	—	—

References

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. Retrieved 2011-10-27.{{cite web}}: CS1 maint: multiple names: authors list (link)
"CoRoT-20 Planets in the system". Retrieved February 25, 2019.

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[Deleuil-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. Retrieved 2011-10-27.{{cite web}}: CS1 maint: multiple names: authors list (link)

[2] "CoRoT-20 Planets in the system". Retrieved February 25, 2019.