K2-21 c is a Neptune-like exoplanet that orbits a K-type star. Its mass is Unknown, it takes 15.5 days to complete one orbit of its star, and is 0.107 AU from its star. Its discovery was announced in 2015.

PLANET TYPE
Neptune-like
DISCOVERY DATE
2015
MASS
Unknown
PLANET RADIUS
0.222 x Jupiter
ORBITAL RADIUS
0.107 AU
ORBITAL PERIOD
15.5 days
ECCENTRICITY
0.21
DETECTION METHOD
Transit