GJ 422 b
Orbiting GJ 422
GJ 422 b is an exoplanet orbiting the star GJ 422, discovered in 2014 using the Radial Velocity method.
Minimum Mass (M sin i)
11.07
Earth masses
Orbital Period
20.1
days
Distance
12.7
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
11.07
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Feng et al. 2020
Orbital Period
20.129+0.005−0.005days
Semi-Major Axis
0.1110+0.0040−0.0040au
M sin(i) (Earth masses)
11.07+1.12−1.12
M sin(i) (Jupiter masses)
0.0348+0.0035−0.0035
Eccentricity
0.1100+0.0400−0.0400
Argument of Periastron
265.0+18.0−18.0deg
Radial Velocity Semi-Amplitude
4.47+0.34−0.34m/s
Distance from Earth
12.7 pc (~41 ly)
Spectral Type
Unknown
Temperature
Unknown
Mass (Solar)
0.35 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
168.9810°, -57.5426°
Discovery Method
Radial Velocity
Discovery Year
2014
Source ID: GJ 422 b
GJ 422 b orbits GJ 422 and was reported in 2014 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 11.07 Earth masses (M sin i) and an orbital period of 20.13 days.
Catalog data places the system at about 12.7 parsecs from Earth and 1 known planet in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open GJ 422