Kepler-309 b

A confirmed exoplanet orbiting Kepler-309.

Compared with Earth

Size
About 1.6 times Earth's width.
Year
A year here lasts about 5.9 Earth days.

Planet

Radius
1.56 × Earth
Mass
Unknown
Density
Unknown
Equilibrium temperature
Unknown
Starlight received
Unknown
Orbital period
5.924 days
Average distance from its star
0.059 AU

Star

Host star
Kepler-309
Spectral class
K — orange dwarf
Surface temperature
4,713 K
Radius
0.721 × Sun
Mass
Unknown
Age
Unknown

System

Distance from Earth
1,776 light-years (544.6 parsecs)
Stars in system
1
Known planets
2

Discovery

Year
2014
Method
Transit
Facility
Kepler

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