CoRoT-20

Last updated
CoRoT-20
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Monoceros [1]
Right ascension 06h 30m 52.902s [2]
Declination +00° 13′ 36.86″ [2]
Apparent magnitude  (V)14.66 [3]
Characteristics
Evolutionary stage main sequence [2] [3]
Spectral type G2V [3]
Variable type planetary transit
Astrometry
Radial velocity (Rv)+69.47±9.37 [2] km/s
Proper motion (μ)RA: −0.263 [2] mas/yr
Dec.: −2.797 [2] mas/yr
Parallax (π)1.1216±0.0220  mas [2]
Distance 2,910 ± 60  ly
(890 ± 20  pc)
Details
Mass 1.11 [3]   M☉
Radius 1.02 [3]   R☉
Luminosity 1.75 [2]   L☉
Surface gravity (log g)4.20 [3]   cgs
Temperature 5,880 [3]   K
Metallicity [Fe/H]0.14 [3]   dex
Age 100 [3]   Myr
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 [4]
Database references
SIMBAD data

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.

Contents

Characteristics

CoRoT-20 is a very young star of 14.66 magnitude by astronomical standards. Its age is estimated at approximately 100 million years. [5] 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. [5] 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 [6]
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. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 4 5 6 7 8 9 Raetz, St; Heras, A. M.; Fernández, M.; Casanova, V.; Marka, C. (2019). "Transit analysis of the CoRoT-5, CoRoT-8, CoRoT-12, CoRoT-18, CoRoT-20, and CoRoT-27 systems with combined ground- and space-based photometry". Monthly Notices of the Royal Astronomical Society. 483 (1): 824. arXiv: 1812.01536 . Bibcode:2019MNRAS.483..824R. doi: 10.1093/mnras/sty3085 .
  4. ↑ "CoRoT-20". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2025-05-17.
  5. 1 2 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. arXiv: 1109.3203 . Bibcode:2012A&A...538A.145D. doi:10.1051/0004-6361/201117681.
  6. ↑ "CoRoT-20 Planets in the system" . Retrieved February 25, 2019.
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