Kepler-23c

Kepler-23c is a Neptune-sized exoplanet orbiting the star Kepler-23, located in the constellation Cygnus.^[3] The planet is 3.12 times wider than the Earth^[2] and is 0.189 Jupiter masses.^[3] The planet was discovered using data taken from the Kepler space telescope.^[1] It is likely a gas giant. The planets Kepler-23b and d both reside in the same planetary system.

Kepler-23c

Discovery
Discovered by	Eric B. Ford et al.[1]
Discovery date	25 January 2012
Detection method	Transit method
Orbital characteristics
Semi-major axis	0.099 AU (14,800,000 km)[1]
Eccentricity	0.02+0.39 −0.02[2]
Orbital period (sidereal)	10.742434(39)[2] d
Star	Kepler-23
Physical characteristics
Mean radius	3.12 ± 0.10[2] R🜨
Mass	0.189+0.033 −0.036[3] MJ

Comparative sizes of Earth, Kepler-23 c and Jupiter.