artist rendition
Artist's concept

HAT-P-31 b is a gas giant exoplanet that orbits a F-type star. Its mass is 2.171 Jupiter, it takes 5 days to complete one orbit of its star, and is 0.055 AU from its star. Its discovery was announced in 2011.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2011
MASS
2.171 Jupiter
PLANET RADIUS
1.07 x Jupiter
ORBITAL RADIUS
0.055 AU
ORBITAL PERIOD
5 days
ECCENTRICITY
0.245
DETECTION METHOD
Transit