GJ 3942 b
Orbiting GJ 3942
GJ 3942 b is an exoplanet orbiting the star GJ 3942, discovered in 2017 using the Radial Velocity method.
Minimum Mass (M sin i)
7.14
Earth masses
Orbital Period
6.9
days
Distance
16.9
parsecs
Equilibrium Temp
590
K
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
7.14
Radial-velocity minimum
Equilibrium Temperature
590 K
Parameter source: Perger et al. 2017
Orbital Period
6.905+0.040−0.040days
Semi-Major Axis
0.0608+0.0068−0.0068au
M sin(i) (Earth masses)
7.14+0.59−0.59
M sin(i) (Jupiter masses)
0.0225+0.0019−0.0019
Eccentricity
0.1210+0.1180−0.1180
Argument of Periastron
112.7+0.1−0.1deg
Radial Velocity Semi-Amplitude
3.29+0.12−0.12m/s
Distance from Earth
16.9 pc (~55 ly)
Spectral Type
M0
Temperature
3867 K
Mass (Solar)
0.63 M☉
Radius (Solar)
0.61 R☉
Luminosity
-1.12 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
242.2645°, 52.9441°
Discovery Method
Radial Velocity
Discovery Year
2017
Source ID: GJ 3942 b
GJ 3942 b orbits GJ 3942 and was reported in 2017 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 7.14 Earth masses (M sin i), an orbital period of 6.91 days, and an equilibrium temperature near 590 K.
Catalog data places the system at about 16.9 parsecs from Earth, a host star classified as M0, 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 3942