Kepler-37 c
A confirmed exoplanet orbiting Kepler-37.
Compared with Earth
- Size
- About 76% of Earth's width.
- Mass
- About 1.3 times Earth's mass.
- Temperature
- About 342 °C (647 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 24 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 21 Earth days.
Planet
- Radius
- 0.755 × Earth
- Mass
- 1.3 × Earth
- Density
- 15 g/cm³
- Equilibrium temperature
- 615 K
- Starlight received
- 23.9 × Earth
- Orbital period
- 21.3 days
- Average distance from its star
- 0.139 AU
Star
- Host star
- Kepler-37
- Spectral class
- G — sun-like
- Surface temperature
- 5,357 K
- Radius
- 0.789 × Sun
- Mass
- 0.79 × Sun
- Age
- 7.6 billion years
System
- Distance from Earth
- 208.5 light-years (63.92 parsecs)
- Stars in system
- 1
- Known planets
- 4
Discovery
- Year
- 2013
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.