CoRoT-4

CoRoT-4 (formerly known as CoRoT-Exo-4^[9]) is a yellow-white dwarf main-sequence star in the constellation Monoceros.

CoRoT-4

Observation data Epoch J2000      Equinox J2000
Constellation	Monoceros[1]
Right ascension	06h 48m 46.7134s[2]
Declination	−00° 40′ 21.970″[2]
Apparent magnitude (V)	13.45[3]
Characteristics
Evolutionary stage	main sequence[4]
Spectral type	F8V[3]
Apparent magnitude (R)	13.42[5]
Apparent magnitude (J)	12.619±0.026[5]
Apparent magnitude (H)	12.359±0.029[5]
Apparent magnitude (K)	12.29±0.03[5]
Astrometry
Proper motion (μ)	RA: −3.659±0.049[2] mas/yr Dec.: −3.898±0.044[2] mas/yr
Parallax (π)	1.3484±0.0280 mas[2]
Distance	2,420 ± 50 ly (740 ± 20 pc)
Details
Mass	1.16+0.03 −0.02[6] M☉
Radius	1.17+0.01 −0.03[6] R☉
Luminosity	1.5[7] L☉
Surface gravity (log g)	4.42[7] cgs
Temperature	6,190±60[6] K
Metallicity [Fe/H]	0.00±0.15[8] dex
Rotation	8.87±1.12 d[8]
Rotational velocity (v sin i)	6.4±1.0[6] km/s
Age	1+1.0 −0.3[6] Gyr
Other designations
GSC 04800-02187, GSC2 S1002103169, UCAC2 31467163, CoRoT-Exo-4, 2MASS J06484671-0040219, USNO-B1.0 0893-00105986[5]
Database references
SIMBAD	data

Planetary system

The star is orbited by one known extrasolar planet, designated CoRoT-4b. It was catalogued as part of the CoRoT mission to find transiting planets, when a planet was spotted using the transit method.^[8]

The CoRoT-4 planetary system

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	0.72±0.08 MJ	0.090±0.001	9.20205±0.00037	0	—	—

See also

• List of extrasolar planets