CoRoT-2

CoRoT-2

CoRoT-2 is a G7V class star somewhat less massive than the Sun (G2V)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aquila
Right ascension 19h 27m 06.4944s[1]
Declination +01° 23′ 01.360″[1]
Apparent magnitude (V) 12.57[2]
Characteristics
Spectral type G7V[3]
K0V (SIMBAD)[2]
Apparent magnitude (V) ~12.577
Apparent magnitude (I) 11.49 ±0.03
Apparent magnitude (J) 10.5783 ±0.028
Apparent magnitude (H) 10.44 ±0.04
Apparent magnitude (K) 10.31 ±0.03
Astrometry
Proper motion (μ) RA: −3.360(16) mas/yr[1]
Dec.: −11.101(12) mas/yr[1]
Parallax (π)4.6895 ± 0.0143 mas[1]
Distance696 ± 2 ly
(213.2 ± 0.7 pc)
Details
Mass0.97 ±0.06 M☉
Radius0.902 ±0.018 R☉
Temperature5625 ±120 K
Metallicity0 ±0.1
Age? years
Other designations
GSC 00465-01282, CoRoT-Exo-2, GSC2 N023200075, UCAC2 32263596, CoRoT 101206560, DENIS-P J192706.4+012301, 2MASS J19270649+0123013, USNO-B1.0 0913-00447544[2]
Database references
SIMBADdata

CoRoT-2 is a yellow dwarf main sequence star a little cooler than the Sun. This star is located approximately 700 light-years away in the constellation of Aquila. The apparent magnitude of this star is 12, which means it is not visible to the naked eye but can be seen with a medium-sized amateur telescope on a clear dark night.[2]

It has a true physical companion, 2MASS J19270636+0122577, with a spectral type of K9, as earlier hypothesized by Alonso et al. (2008), making CoRoT-2 a wide binary system with at least one planet.[4]

  1. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  2. ^ a b c d "GSC 00465-01282". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-04-27.
  3. ^ Cite error: The named reference Alonso2008 was invoked but never defined (see the help page).
  4. ^ S. Czesla; S. Schröter; U. Wolter; C. von Essen; K. F. Huber; J. H. M. M. Schmitt; D. E. Reichart; J. P. Moore (March 2012). "The extended chromosphere of CoRoT-2A: Discovery and analysis of the chromospheric Rossiter-McLaughlin effect". Astronomy and Astrophysics. 539: A150. Bibcode:2012A&A...539A.150C. doi:10.1051/0004-6361/201118042.