artist rendition
Artist's concept

Kepler-9 b is a gas giant exoplanet that orbits a G-type star. Its mass is 0.252 Jupiter, it takes 19.2 days to complete one orbit of its star, and is 0.14 AU from its star. Its discovery was announced in 2010.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2010
MASS
0.252 Jupiter
PLANET RADIUS
0.842 x Jupiter
ORBITAL RADIUS
0.14 AU
ORBITAL PERIOD
19.2 days
ECCENTRICITY
0.15
DETECTION METHOD
Transit