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Gliese 849 b

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Jovian planet orbiting Gliese 849
Gliese 849 b
Discovery
Discovered byCalifornia and Carnegie Planet Search
Discovery siteW. M. Keck Observatory
 USA
Discovery dateAugust 2006
Detection methodradial velocity
Orbital characteristics
Semi-major axis2.39±0.082 AU
Eccentricity0.038±0.019
Orbital period (sidereal)1924±15 d
Time of periastron2453770±150
Argument of periastron66±28
Semi-amplitude23.96±0.94
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.

  • 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. ^ 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.
  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. S2CID 14787596.

External links


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