Kepler-12 b
A confirmed exoplanet orbiting Kepler-12.
Compared with Earth
- Size
- About 20 times Earth's width.
- Mass
- About 137 times Earth's mass.
- Temperature
- About 1,207 °C (2,204 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 4.4 Earth days.
Planet
- Radius
- 19.66 × Earth
- Mass
- 137.3 × Earth
- Density
- 0.11 g/cm³
- Equilibrium temperature
- 1,480 K
- Starlight received
- Unknown
- Orbital period
- 4.438 days
- Average distance from its star
- 0.0553 AU
Star
- Host star
- Kepler-12
- Spectral class
- G — sun-like
- Surface temperature
- 5,947 K
- Radius
- 1.483 × Sun
- Mass
- 1.166 × Sun
- Age
- Unknown
System
- Distance from Earth
- 2,875 light-years (881.4 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2011
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.