Gliese 849

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**Gliese 849**
Observation data Epoch J2000.0
Constellation (pronunciation)	Aquarius
Right ascension	22^h 9^m 40.346^s
Declination	–4° 38′ 26.624″
Apparent magnitude (V)	10.42
Characteristics
Spectral type	M3.5V
U-B color index	1.13
B-V color index	1.51
V-R color index	1.11
R-I color index	1.41
Variable type	suspected
Astrometry
Radial velocity (R_v)	−12 km/s
Proper motion (μ)	RA: 1134.93 mas/yr Dec.: −19.71 mas/yr
Parallax (π)	113.97 ± 2.10 mas
Distance	28.618 ± 0.7 ly (8.774 ± 0.2 pc)
Absolute magnitude (M_V)	10.70
Details
Mass	0.36 M_☉
Radius	0.52 ± 0.07 R_☉
Surface gravity (log g)	4.66
Luminosity	0.0045 L_☉
Temperature	? K
Metallicity	?
Rotation	?
Age	? years
Other designations
BD-05° 5715, LHS 517, LFT 1689, LPM 814, LTT 8889, Wolf 1329, Vys 73, HIP 109388
Database references
SIMBAD	data
Planet
Gliese 849b	Data

Gliese 849 is a red dwarf star in the constellation of Aquarius.

Aquarius Constellation

[edit] Gliese 849 b

**Gliese 849 b**
Orbital elements
Extrasolar planet		List of extrasolar planets
Semimajor axis	(a)	2.35 AU
Eccentricity	(e)	0.06 ± 0.09
Orbital period	(P)	1890 ± 130 d
Angular distance	(θ)	267.039 mas
Longitude of periastron	(ω)	351 ± 60°
Time of periastron	(T₀)	2411462 ± 550 JD
Semi-amplitude	(K)	22 ± 4 m/s
Physical characteristics
Mass	(m)	>0.82 M_J
Radius	(r)	(Estimated) 1.0 R_J
Discovery information
Discovery date		Aug 2006
Discoverer(s)		Buccino et al.
Detection method		radial velocity
Discovery status		Published
Database references
exoplanet	[data]

Gliese 849 b is a first long-period Jupiter-like planet discovered around the red dwarf star, announced in August 2006 by Buccino that used a radial velocity technique. The previously longest-period Jupiter-like planet around the red dwarf star was Gliese 876 b. However, there are two disproven longer period Jupiter-like planets around Lalande 21185. There are indication 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 1890 days to revolve. The orbit is circular.