GJ 3988 b
Orbiting GJ 3988
GJ 3988 b is an exoplanet orbiting the star GJ 3988, discovered in 2023 using the Radial Velocity method.
Minimum Mass (M sin i)
3.69
Earth masses
Orbital Period
6.9
days
Distance
9.9
parsecs
Equilibrium Temp
348
K
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
3.69
Radial-velocity minimum
Equilibrium Temperature
348 K
Parameter source: Gorrini et al. 2023
Orbital Period
6.944+0.001−0.001days
Semi-Major Axis
0.0405+0.0011−0.0012au
M sin(i) (Earth masses)
3.69+0.42−0.41
M sin(i) (Jupiter masses)
0.0116+0.0013−0.0013
Eccentricity
0.0000
Epoch of Periastron
2457509.78+0.26−0.25days(BJD)
Argument of Periastron
0.0deg
Radial Velocity Semi-Amplitude
3.83+0.37−0.37m/s
Distance from Earth
9.9 pc (~32 ly)
Spectral Type
M4.5 V
Temperature
3273 K
Mass (Solar)
0.18 M☉
Radius (Solar)
0.20 R☉
Luminosity
-2.40 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
255.8504°, 51.4090°
Discovery Method
Radial Velocity
Discovery Year
2023
Source ID: GJ 3988 b
GJ 3988 b orbits GJ 3988 and was reported in 2023 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 3.69 Earth masses (M sin i), an orbital period of 6.94 days, and an equilibrium temperature near 348 K.
Catalog data places the system at about 9.9 parsecs from Earth, a host star classified as M4.5 V, 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 3988