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Gliese 849 b

Coordinates: Sky map 22h 09m 40.3460s, −4° 38′ 26.624″
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Gliese 849 b
Discovery
Discovered byCalifornia and Carnegie Planet Search
Discovery siteW. M. Keck Observatory
 USA
Discovery dateAugust 2006
radial velocity
Orbital characteristics
2.39±0.082 AU
Eccentricity0.038±0.019[1]
1924±15[1] d
2453770±150[1]
66±28[1]
Semi-amplitude23.96±0.94[1]
StarGliese 849

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]

  • Diagram of the probable structure of the Gliese 849 Star system
    Diagram of the probable structure of the Gliese 849 Star system


See also

References

  1. ^ a b c d e Feng, Y. Katherina; Wright, Jason T.; Nelson, Benjamin; Wang, Sharon X.; Ford, Eric B.; Marcy, Geoffrey W.; Isaacson, Howard; Howard, Andrew W. (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. {{cite journal}}: Unknown parameter |displayauthors= ignored (|display-authors= suggested) (help)
  2. ^ 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.



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