artist rendition
Artist's concept

Kepler-18 d is a Neptune-like exoplanet that orbits a G-type star. Its mass is 16.4 Earths, it takes 14.9 days to complete one orbit of its star, and is 0.1172 AU from its star. Its discovery was announced in 2011.

PLANET TYPE
Neptune-like
DISCOVERY DATE
2011
MASS
16.4 Earths
PLANET RADIUS
0.623 x Jupiter
ORBITAL RADIUS
0.1172 AU
ORBITAL PERIOD
14.9 days
ECCENTRICITY
0.0
DETECTION METHOD
Transit