artist rendition
Artist's concept

Kepler-18 c is a Neptune-like exoplanet that orbits a G-type star. Its mass is 17.3 Earth, it takes 7.6 days to complete one orbit of its star, and is 0.0752 AU from its star. Its discovery was announced in 2011.

PLANET TYPE
Neptune-like
DISCOVERY DATE
2011
MASS
17.3 Earth
PLANET RADIUS
0.49 x Jupiter
ORBITAL RADIUS
0.0752 AU
ORBITAL PERIOD
7.6 days
ECCENTRICITY
0.0
DETECTION METHOD
Transit