Gliese 849 b

Gliese 849 b

Discovery
Discovered by	California and Carnegie Planet Search
Discovery site	W. M. Keck Observatory  USA
Discovery date	August 2006
Detection method	radial velocity
Orbital characteristics
Semi-major axis	2.39±0.082 AU
Eccentricity	0.038±0.019[1]
Orbital period (sidereal)	1924±15[1] d
Time of periastron	2453770±150[1]
Argument of periastron	66±28[1]
Semi-amplitude	23.96±0.94[1]
Star	Gliese 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

• List of star systems within 25–30 light-years

• "Gj 849". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-08-02.

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