artist rendition
Artist's concept

GJ 3138 d is a gas giant exoplanet that orbits a K-type star. Its mass is at least 10.5 Earth, it takes 257.8 days to complete one orbit of its star, and is 0.698 AU from its star. Its discovery was announced in 2017.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2017
MASS
at least 10.5 Earth
PLANET RADIUS
Unknown
ORBITAL RADIUS
0.698 AU
ORBITAL PERIOD
257.8 days
ECCENTRICITY
0.32
DETECTION METHOD
Radial Velocity