Gliese 176
Gliese 176 is a small star with an orbiting exoplanet in the constellation of Taurus. With an apparent visual magnitude of 9.95, it is too faint to be visible to the naked eye. It is located at a distance of 30.9 light years based on parallax measurements, and is drifting further away with a heliocentric radial velocity of 26.4 km/s.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 42m 55.7750s |
| Declination | +18° 57′ 29.396″ |
| Apparent magnitude (V) | 9.95 |
| Characteristics | |
| Spectral type | M2V |
| B−V color index | 1.523±0.025 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | 26.4105±0.0004 km/s |
| Proper motion (μ) | RA: +656.647 mas/yr Dec.: −1116.594 mas/yr |
| Parallax (π) | 105.4275 ± 0.0210 mas |
| Distance | 30.937 ± 0.006 ly (9.485 ± 0.002 pc) |
| Absolute magnitude (MV) | 10.10±0.06 |
| Details | |
| Mass | 0.485±0.012 M☉ |
| Radius | 0.474±0.015 R☉ |
| Luminosity | 0.03516±0.00032 L☉ |
| Temperature | 3,632+58 −56 K |
| Metallicity [Fe/H] | −0.1±0.2 dex |
| Rotation | 40.00±0.11 days |
| Rotational velocity (v sin i) | ≤0.8 km/s |
| Age | 8.8+2.5 −2.8 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an M-type main-sequence star, sometimes called a red dwarf, with a stellar classification of M2V. It has 49% of the Sun's mass and 47% of the radius of the Sun. The star is radiating just 3.5% of the luminosity of the Sun from its photosphere at an effective temperature of 3,632 K. It is estimated to be around nine billion years old, and is spinning slowly with a rotation period of 40 days. The star is orbited by a Super-Earth.