Planet GJ 229 A b

Name GJ 229 A b
Planet Status Confirmed
Discovered in 2014
Mass 0.101 ( -0.05 +0.053 ) MJ
Mass*sin(i) 0.101 ( -0.05 +0.053 ) MJ
Semi-Major Axis 0.97 ( -0.09 +0.12 ) AU
Orbital Period 471.0 ( -12.0 +22.0 ) day
Eccentricity 0.1 ( -0.1 +0.22 )
ω 148.97 deg
Tperi
Radius
Inclination
Update 2019-03-25
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 3.83 ( -1.68 +1.74 ) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

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

Observability Predictor

Remarks

Gliese 229 is a binary system : Gliese 229 A is a red dwarf with a planet Gliese 229 A b (Tuomi et al. 2014) . Gliese 229 B is a brown dwarf.

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