artist rendition
Artist's concept

Kepler-9 c is a gas giant exoplanet that orbits a G-type star. Its mass is 0.171 Jupiters, it takes 38.9 days to complete one orbit of its star, and is 0.225 AU from its star. Its discovery was announced in 2010.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2010
MASS
0.171 Jupiters
PLANET RADIUS
0.823 x Jupiter
ORBITAL RADIUS
0.225 AU
ORBITAL PERIOD
38.9 days
ECCENTRICITY
0.13
DETECTION METHOD
Transit