Planet GJ 229 B

Name GJ 229 B
Planet Status Confirmed
Discovered in 1995
Mass 35.0 ( -15.0 +15.0 ) MJ
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Update 2017-03-09
Detection Method Imaging
Mass Detection Method
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 1200.0 ( -1200.0 +0.0 ) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names Gliese 229 B

Star

GJ 229 A
Name GJ 229 A
Distance
Spectral type M1 V
Apparent magnitude V 8.125
Mass 0.58 MSun
Age
Effective temperature 3564.0 K
Radius
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000 06:10:34.6
Dec2000 -21:51:53
Alternate Names
Planetary system
2 planets

Remarks

Gliese 229 is a binary system : Gliese 229 A is a red dwarf with a planet Gliese 229 A b. Gliese 229 B is a brown dwarf

More data


Related publications

Physical Properties of Gliese 229B Based on Newly Determined Carbon and Oxygen Abundances of Gliese 229A
2015 NAKAJIMA T., TSUJI T. & TAKEDA Y.
Astron. J., 150, 53
paper  arxiv   ADS

Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics
2014 TUOMI M., JONES H., BARNES J., ANGLADA-ESCUDE G. & JRNKINS J.
MNRAS, 441, 1545
paper  arxiv  

Discovery of a cool brown dwarf
1995 NAKAJIMA T., OPPENHEIMER B. R., KULKARNI S. R., GOLIMOWSKI D. A., MATTHEWS K. & DURRANCE S. T.
Nature, 378, 463
paper with Figs. 1, 2 & 3