Gliese 625
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Draco |
| Right ascension | 16h 25m 24.62304s |
| Declination | +54° 18′ 14.7655″ |
| Apparent magnitude (V) | 10.13 |
| Characteristics | |
| Spectral type | M1.5V |
| B−V color index | 1.591±0.027 |
| Astrometry | |
| Radial velocity (Rv) | −13.37±0.14 km/s |
| Proper motion (μ) | RA: 432.230(19) mas/yr Dec.: −171.652(22) mas/yr |
| Parallax (π) | 154.3503±0.0161 mas |
| Distance | 21.131 ± 0.002 ly (6.4788 ± 0.0007 pc) |
| Absolute magnitude (MV) | 11.06 |
| Details | |
| Mass | 0.240±0.013 M☉ |
| Radius | 0.255±0.034 R☉ |
| Luminosity | 0.01482±0.00022 L☉ |
| Surface gravity (log g) | 4.94±0.06 cgs |
| Temperature | 3,557±9 K |
| Metallicity [Fe/H] | −0.401±0.005 dex |
| Rotation | 77.8±5.5 d |
| Rotational velocity (v sin i) | 2.2±0.7 km/s |
| Other designations | |
| GJ 625, HIP 80459, AC +54 1646, G 202-48, G 226-7, G 225-62, LSPM J1625+5418, NLTT 42804, PLX 3740.03, TYC 3878-1193-1, 2MASS J16252459+5418148 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
GJ 625 (AC 54 1646-56) is a small red dwarf star with an exoplanetary companion in the northern constellation of Draco. The system is located at a distance of 21.1 light-years from the Sun based on parallax, but is drifting closer with a radial velocity of −13 km/s. It is too faint to be visible to the naked eye, having an apparent visual magnitude of 10.13 and an absolute magnitude of 11.06.
This is an M-type main-sequence star with a stellar classification of M1.5V. It is spinning slowly with a rotation period of roughly 78 days, and has a low magnetic activity level. The star has about a quarter of the mass and size of the Sun, and the metal content is 40% the abundances in the Sun's atmosphere. It is radiating just 1.5% of the luminosity of the Sun from its photosphere at an effective temperature of 3,557 K.