Gliese 317 b
Gliese 317 b is an extrasolar planet[1] approximately 50 light-years away in the constellation of Pyxis. The planet was announced in July 2007 to be orbiting the red dwarf star Gliese 317. The planet is a jovian planet that orbits about 95% the distance between Earth to the Sun. Despite of this, it takes about 1.9 years, corresponding to slow orbital velocity of 14.82 km/s.
| Discovery | |
|---|---|
| Discovered by | Johnson et al. |
| Discovery site |  W. M. Keck |
| Discovery date | 6 July 2007 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| 0.95 AU (142,000,000 km) | |
| Eccentricity | 0.193 ± 0.06 |
| 692.9 ± 4 d 1.9 ± 1.1 y | |
| 2451639 ± 30 | |
| 344 ± 10 | |
| Semi-amplitude | 57.3 |
| Star | Gliese 317 |
See also
- Gliese 317 c
- Gliese 436 b
References
- Johnson; Butler, R. Paul; Marcy, Geoffrey W.; Fischer, Debra A.; Vogt, Steven S.; Wright, Jason T.; Peek, Kathryn M. G. (2007). "A New Planet Around an M Dwarf: Revealing a Correlation Between Exoplanets and Stellar Mass". The Astrophysical Journal. 670 (1): 833–840. arXiv:0707.2409. Bibcode:2007ApJ...670..833J. doi:10.1086/521720.
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