Planet GJ 229 Ba

Detailed information about planet GJ 229 Ba and its parameters.

Planet

Name
GJ 229 Ba
Planet Status
Confirmed
Discovered in
1995
Publication
Status
Published in a refereed paper
Update
2025-02-28
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
Angular distance
ω
Tperi
Radius
Inclination
Detection Method
Imaging, Astrometry
Mass Meas. Method
Astrometry
Radius Meas. Method
Flux
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names
Gliese 229 b, HD 42581 b, Gl 229 Ba
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference
CH4
Modeling Detected -3.352 ( +0.018 -0.017 ) 2022 - HOWE A.R.
CO
Modeling Detected -3.805 ( +0.11 -0.113 ) 2022 - HOWE A.R.
CO2
Modeling Detected -7.9 ( +2.6 -2.7 ) 2022 - HOWE A.R.
H2O
Modeling Detected -3.43 ( +0.017 -0.016 ) 2022 - HOWE A.R.
H2S
Modeling Detected -5.6 ( +0.9 -4.5 ) 2022 - HOWE A.R.
K
Modeling Detected -5.942 ( +0.11 -0.014 ) 2022 - HOWE A.R.
Na
Modeling Detected -5.942 ( +0.11 -0.014 ) 2022 - HOWE A.R.
NH3
Modeling Detected -4.504 ( +0.021 -0.024 ) 2022 - HOWE A.R.

11 Feb 2025
The GJ 229 B system has a semi-major axis of 42.9 AU around GJ 229 A (Thompson et al. 2025)

No link

Star

No remarks

No link