Gliese 86
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Eridanus |
| Gliese 86 A | |
| Right ascension | 02h 10m 25.9191s |
| Declination | −50° 49′ 25.467″ |
| Apparent magnitude (V) | 6.17 |
| Gliese 86 B | |
| Right ascension | 02h 10m 26s |
| Declination | −50° 49′ 2″ |
| Characteristics | |
| Spectral type | K1V + DQ6 |
| U−B color index | 0.45 |
| B−V color index | 0.812 |
| V−R color index | 0.45 |
| R−I color index | 0.40 |
| Astrometry | |
| Radial velocity (Rv) | 56.7 km/s |
| Proper motion (μ) | RA: 2,124.853±0.075 mas/yr Dec.: 638.092±0.063 mas/yr |
| Parallax (π) | 92.7042±0.0454 mas |
| Distance | 35.18 ± 0.02 ly (10.787 ± 0.005 pc) |
| Absolute magnitude (MV) | 5.95 |
| Orbit | |
| Primary | Gliese 86 A |
| Companion | Gliese 86 B |
| Period (P) | ≈100 yr |
| Semi-major axis (a) | 23.7 au |
| Eccentricity (e) | 0.429 |
| Inclination (i) | 126.44° |
| Longitude of the node (Ω) | 234.2° |
| Details | |
| Gliese 86 A | |
| Mass | 0.83±0.05 M☉ |
| Radius | 0.79±0.03 R☉ |
| Surface gravity (log g) | 4.56±0.10 cgs |
| Temperature | 5180±80 K |
| Metallicity [Fe/H] | −0.27±0.07 dex |
| Rotational velocity (v sin i) | 2.0±1.0 km/s |
| Age | 10±1 Gyr |
| Gliese 86 B | |
| Mass | 0.5425 M☉ |
| Temperature | 8180±120 K |
| Other designations | |
| Gliese 86A: CD−51°532, HD 13445, HIP 10138, HR 637, SAO 232658, WDS J02104-5049A | |
| Gliese 86B: GJ 86 B, HD 13445B, WDS J02104-5049B, WD 0208-510 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
Gliese 86 (13 G. Eridani, HD 13445) is a K-type main-sequence star approximately 35 light-years away in the constellation of Eridanus. It has been confirmed that a white dwarf orbits the primary star. In 1998 the European Southern Observatory announced that an extrasolar planet was orbiting the star.