Kepler-251 c

A confirmed exoplanet orbiting Kepler-251.

Compared with Earth

Size
About 2.8 times Earth's width.
Year
A year here lasts about 17 Earth days.

Planet

Radius
2.77 × Earth
Mass
Unknown
Density
Unknown
Equilibrium temperature
Unknown
Starlight received
Unknown
Orbital period
16.51 days
Average distance from its star
0.122 AU

Star

Host star
Kepler-251
Spectral class
G — sun-like
Surface temperature
5,526 K
Radius
0.89 × Sun
Mass
Unknown
Age
Unknown

System

Distance from Earth
3,016 light-years (924.6 parsecs)
Stars in system
1
Known planets
4

Discovery

Year
2014
Method
Transit
Facility
Kepler

Data from the NASA Exoplanet Archive, synced October 14, 2026.