Gliese 849 b is an extrasolar planet approximately 29 light years away in the constellation of Aquarius. It is the first long-period Jupiter-like planet discovered around a red dwarf, announced in August 2006 by the California and Carnegie Planet Search team using the radial velocity technique. The previously longest-period Jupiter-like planet around a red dwarf was Gliese 876 b. There are, however, two disproven longer period Jupiter-like planets around Lalande 21185. There are indications of a possible second companion. The planet's mass is less than that of Jupiter, though only the minimum mass is known. The distance of the planet is 2.35 AU and it takes 5.17 years (1890 days) to revolve in a circular orbit.[2]
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Diagram of the probable structure of the Gliese 849 Star system
| Discovery | |
|---|---|
| Discovered by | California and Carnegie Planet Search |
| Discovery site | W. M. Keck Observatory USA |
| Discovery date | August 2006 |
| radial velocity | |
| Orbital characteristics | |
| 2.39±0.082 AU | |
| Eccentricity | 0.038±0.019[1] |
| 1924±15[1] d | |
| 2453770±150[1] | |
| 66±28[1] | |
| Semi-amplitude | 23.96±0.94[1] |
| Star | Gliese 849 |
See also
editReferences
edit- ^ a b c d e Feng, Y. Katherina; et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal. 800 (1). 22. arXiv:1501.00633. Bibcode:2015ApJ...800...22F. doi:10.1088/0004-637X/800/1/22. S2CID 56390823.
- ^ Butler, R. Paul; et al. (2006). "A Long-Period Jupiter-Mass Planet Orbiting the Nearby M Dwarf GJ 849". Publications of the Astronomical Society of the Pacific. 118 (850): 1685–1689. arXiv:astro-ph/0610179. Bibcode:2006PASP..118.1685B. doi:10.1086/510500. S2CID 14787596.
External links
edit- "Gj 849". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-08-02.
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