CoRoT-20

Star in Monoceros

CoRoT-20
Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Monoceros
Right ascension	06^h 30^m 52,900^s
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 , CMC14 J063052.9+001336, UCAC2 31822344, UCAC3 =181-42077, USNO-B1.0 0902-00091920, USNO-A2.0 0900-03054387, CoRoT-Exo 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 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

^ ^a ^b 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 2012-07-08. Retrieved 2011-10-27.{{cite web}}: CS1 maint: multiple names: authors list (link)
^ "CoRoT-20 Planets in the system". Retrieved February 25, 2019.

Constellation of Monoceros

Stars

Bayer	α β γ δ ε ζ
Flamsteed	1 2 3 6 7 9 10 12 13 14 16 17 18 19 20 21 23 24 25 27 28 77 Ori 78 Ori
Variable	R S (15) T U V RU RW SV TU UX VV VY AO AR AU AX BE BN BT BX CL CS CV CW DD FU GI IM PZ V372 V396 V474 V505 V569 V577 V578 V582 V588 V589 V590 V592 V614 V616 V638 V640 V641 V644 V653 V682 V684 V689 V694 V695 V696 V700 V715 V721 V723 V728 V731 V739 V743 V750 V753 V827 V838 V926
HR	2150 2154 2179 2205 2224 2234 2237 2267 2270 2280 2292 2300 2313 2317 2321 2324 2325 2328 2333 2342 2347 2355 2367 2370 2375 2378 2381 2386 2395 2406 2409 2418 2426 2430 2440 2458 2461 2467 2469 2474 2479 2502 2508 2514 2521 2530 2543 2551 2555 2570 2572 2577 2582 2584 2589 2599 2606 2610 2613 2624 2627 2636 2639 2647 2655 2656 2663 2676 2694 2731 2732 2739 2752 2765 2806 2807 2811 2833 2865 2866 2867 2876 2883 2920 2958 3014 3047 3054 3072 3150 3172 3174 3189
HD	42132 44179 44219 45090 45166 45215 45652 (Lusitânia) 46149 46150 46202 46223 46375 46966 48099 50064 50138 50281 52265 (Citalá) 65938 66428
Other	A0620-00 AFGL 961 CoRoT-1 CoRoT-4 CoRoT-5 CoRoT-7 CoRoT-12 CoRoT-13 CoRoT-14 CoRoT-15 CoRoT-18 CoRoT-19 CoRoT-20 CoRoT-21 CoRoT-24 Gliese 282 Monoceros R2 IRS 3 NGC 2264 IRS 1 Ross 614 Scholz's SCR 0640−0552 UGPS J0652+0324 UGPS J0722−0540

Exoplanets	CoRoT-1b CoRoT-4b CoRoT-5b CoRoT-7b CoRoT-7c CoRoT-7d CoRoT-12b CoRoT-13b CoRoT-14b CoRoT-15b CoRoT-18b CoRoT-19b CoRoT-20b CoRoT-20c CoRoT-21b CoRoT-24b CoRoT-24c HD 44219 b HD 45652 b (Viriato) HD 46375 b HD 52265 b (Cayahuanca)