| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Orion |
| Right ascension | 04h 52m 05.73s [1] |
| Declination | +06° 28′ 35.5″ [1] |
| Apparent magnitude (V) | 11.96 |
| Characteristics | |
| Spectral type | M4V |
| Apparent magnitude (U) | 14.791 |
| Apparent magnitude (B) | 13.56 |
| Apparent magnitude (R) | 10.854 |
| Apparent magnitude (I) | 9.334 |
| Apparent magnitude (J) | 7.814 |
| Apparent magnitude (H) | 7.209 |
| Apparent magnitude (K) | 6.942 |
| U−B color index | 1.23 |
| B−V color index | 1.60 |
| V−R color index | 1.11 |
| R−I color index | 1.520 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | –9.1 km/s |
| Proper motion (μ) | RA: 142.98 ± 4.06 [1] mas/yr Dec.: -309.39 ± 2.38 [1] mas/yr |
| Parallax (π) | 81.38 ± 4.04[1] mas |
| Distance | 40 ± 2 ly (12.3 ± 0.6 pc) |
| Absolute magnitude (MV) | 11.54 |
| Details | |
| Mass | 0.357 M☉ |
| Radius | 0.38 R☉ |
| Surface gravity (log g) | 4.83 |
| Luminosity | 0.016 L☉ |
| Temperature | 3370 K |
| Metallicity | +0.30 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| NStED | data |
| ARICNS | data |
| Extrasolar Planets Encyclopaedia |
data |
Gliese 179 is a 12th magnitude M-type main sequence star located approximately 40 light years away in the constellation Orion. This star is smaller, cooler, fainter, and less massive than our Sun. Also its metal content is twice as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | ≥0.82 ± 0.07 MJ | 2.41 ± 0.04 | 2288 ± 59 | 0.21 ± 0.08 |