Gliese 876 b
Gliese 876 b is an exoplanet orbiting the red dwarf Gliese 876. It completes one orbit in approximately 61 days. Discovered in June 1998, Gliese 876 b was the first planet to be discovered orbiting a red dwarf.
An artist's impression of Gliese 876 b | |
| Discovery | |
|---|---|
| Discovered by | California and Carnegie Planet Search Team and independently by the Geneva Extrasolar Planet Search Team |
| Discovery site | Lick, Keck, Haute-Provence and La Silla Observatories |
| Discovery date | June 22, 1998 |
Detection method | Doppler spectroscopy |
| Orbital characteristics | |
| Epoch 2,450,602.09311 BJD | |
Semi-major axis | 0.218627±0.000017 AU |
| Eccentricity | 0.0325+0.0016 −0.0017 |
Orbital period (sidereal) | 61.1057±0.0074 d |
Mean anomaly | 340.6+4.4 −4 º |
| Inclination | 53.06±0.85 º |
| 35.5+4.1 −4.4 º | |
| Semi-amplitude | 211.57+0.3 −0.29 m/s |
| Star | Gliese 876 |
| Physical characteristics | |
| Mass | 845.2+9.5 −9.4 M🜨 |
| Temperature | 194 K (−79 °C; −110 °F) |
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