Gliese 649
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 16h 58m 08.850s |
| Declination | +25° 44′ 38.97″ |
| Apparent magnitude (V) | 9.655 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | M1.0V |
| Apparent magnitude (B) | 11.222 |
| Apparent magnitude (R) | 8.80 |
| Apparent magnitude (I) | 8.000 |
| Apparent magnitude (J) | 6.448 |
| Apparent magnitude (H) | 5.865 |
| Apparent magnitude (K) | 5.624 |
| B−V color index | 1.48 |
| V−R color index | 0.8 |
| R−I color index | 0.8 |
| Astrometry | |
| Radial velocity (Rv) | 3.76±0.13 km/s |
| Proper motion (μ) | RA: −115.314(21) mas/yr Dec.: −508.087(26) mas/yr |
| Parallax (π) | 96.2333±0.0244 mas |
| Distance | 33.892 ± 0.009 ly (10.391 ± 0.003 pc) |
| Absolute magnitude (MV) | 9.63 |
| Details | |
| Mass | 0.524±0.012 M☉ |
| Radius | 0.531±0.012 R☉ |
| Luminosity | 0.04373±0.00045 L☉ |
| Surface gravity (log g) | 4.76±0.04 cgs |
| Temperature | 3,621+41 −40 K |
| Metallicity [Fe/H] | −0.15±0.09 dex |
| Rotation | 24.89+0.34 −0.35 d |
| Age | 2.96±0.51 Gyr |
| Other designations | |
| BD+25 3173, HIP 83043, TYC 2063-00479-1, 2MASS J16580884+2544392 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
Gliese 649 is a small star with an orbiting exoplanet in the constellation Hercules. It has an apparent visual magnitude of 9.7, which is too faint to be seen with the naked eye. The system is located at a distance of 33.9 light years based on parallax, and is drifting further away with a radial velocity of 3.8 km/s.
This is an M-type main-sequence star, a red dwarf, with a stellar classification of M1.0V. It has 52% of the mass of the Sun and 53% of the Sun's girth. In the visible light band, the star is radiating 4.4% of the luminosity of the Sun from its photosphere at an effective temperature of 3,621 K. It is spinning slowly with a rotation period of 24.9 days.