K2-139 b is a gas giant exoplanet that orbits a G-type star. Its mass is 0.387 Jupiters, it takes 28.4 days to complete one orbit of its star, and is 0.179 AU from its star. Its discovery was announced in 2017.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2017
MASS
0.387 Jupiters
PLANET RADIUS
0.808 x Jupiter
ORBITAL RADIUS
0.179 AU
ORBITAL PERIOD
28.4 days
ECCENTRICITY
0.12
DETECTION METHOD
Transit