GJ 229 A c
Orbiting GJ 229
GJ 229 A c is an exoplanet orbiting the star GJ 229, discovered in 2020 using the Radial Velocity method.
Minimum Mass (M sin i)
8.58
Earth masses
Orbital Period
121.9
days
Distance
5.8
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
8.58
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Feng et al. 2022
Orbital Period
121.933+0.067−0.082days
Semi-Major Axis
0.3840+0.0050−0.0050au
M sin(i) (Earth masses)
8.58+0.64−0.64
M sin(i) (Jupiter masses)
0.0270+0.0020−0.0020
Eccentricity
0.3660+0.0650−0.0630
Epoch of Periastron
2450370.18+2.82−2.53days(BJD)
Argument of Periastron
128.6+9.2−9.4deg
Radial Velocity Semi-Amplitude
1.87+0.13−0.13m/s
Distance from Earth
5.8 pc (~19 ly)
Spectral Type
Unknown
Temperature
Unknown
Mass (Solar)
0.51 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
2
Stars in System
3
Coordinates (RA, Dec)
92.6436°, -21.8677°
Discovery Method
Radial Velocity
Discovery Year
2020
Source ID: GJ 229 A c
GJ 229 A c orbits GJ 229 and was reported in 2020 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 8.58 Earth masses (M sin i) and an orbital period of 121.93 days.
Catalog data places the system at about 5.8 parsecs from Earth and 2 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open GJ 229More planets in this system