CoRoT-7
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Monoceros |
| A | |
| Right ascension | 06h 43m 49.4688s |
| Declination | −01° 03′ 46.817″ |
| Apparent magnitude (V) | 11.668 |
| B | |
| Right ascension | 06h 43m 44.4243s |
| Declination | −01° 03′ 49.427″ |
| Characteristics | |
| CoRoT-7A | |
| Evolutionary stage | main sequence |
| Spectral type | G9V |
| CoRoT-7B | |
| Spectral type | M4 |
| Astrometry | |
| A | |
| Radial velocity (Rv) | +31.174±0.0086 km/s |
| Proper motion (μ) | RA: +10.984 mas/yr Dec.: −0.040 mas/yr |
| Parallax (π) | 6.2676±0.0139 mas |
| Distance | 520 ± 1 ly (159.6 ± 0.4 pc) |
| Absolute magnitude (MV) | 5.78 |
| B | |
| Proper motion (μ) | RA: +10.900 mas/yr Dec.: −0.047 mas/yr |
| Parallax (π) | 6.1353 ± 0.1028 mas |
| Distance | 532 ± 9 ly (163 ± 3 pc) |
| Position (relative to CoRoT-7A) | |
| Component | CoRoT-7B |
| Epoch of observation | 2021 |
| Angular distance | 75.7″ |
| Projected separation | 12160 AU |
| Details | |
| CoRoT-7A | |
| Mass | 0.91±0.03 M☉ |
| Radius | 0.82±0.04 R☉ |
| Luminosity | 0.51 L☉ |
| Surface gravity (log g) | 4.47±0.10 cgs |
| Temperature | 5,250±60 K |
| Metallicity [Fe/H] | 0.12±0.06 dex |
| Rotation | ~23 days |
| Rotational velocity (v sin i) | <3.5 km/s |
| Age | (1.2–2.3) × 109 years |
| CoRoT-7B | |
| Mass | 0.23 M☉ |
| Radius | 0.29 R☉ |
| Luminosity | 0.0087 L☉ |
| Surface gravity (log g) | 4.96 cgs |
| Temperature | 3.284 K |
| Other designations | |
| 2MASS J06434947-0103468, TYC 4799-1733-1, GSC 04799-01733 | |
| CoRoT-7A: Gaia DR3 3107267177757848576 | |
| CoRoT-7B: Gaia DR3 3107267212116737792 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
CoRoT-7 (TYC 4799-1733-1) is a binary star system made up of a late G-type star and a M-dwarf star that was discovered in 2021. The primary star has three exoplanets, including CoRoT-7b, a super-Earth exoplanet that is remarkable due to its extremely high temperature (around 2000 °C) and very short orbital period, around 20 hours. It was the first exoplanet shown to be rocky. The system has the name CoRoT-7 after the CoRoT space telescope, which discovered the exoplanets around the star CoRoT-7A. The stellar system is 520 light-years from the Earth.