CoRoT-4
Star in the constellation Monoceros
From Wikipedia, the free encyclopedia
CoRoT-4 (formerly known as CoRoT-Exo-4[9]) is a yellow-white dwarf main-sequence star in the constellation Monoceros.
| 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]
| 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 | — | — |