Kepler-20 b
A confirmed exoplanet orbiting Kepler-20.
Compared with Earth
- Size
- About 1.8 times Earth's width.
- Mass
- About 9.7 times Earth's mass.
- Temperature
- About 914 °C (1,677 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 331 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 3.7 Earth days.
Planet
- Radius
- 1.773 × Earth
- Mass
- 9.7 × Earth
- Density
- 9.4 g/cm³
- Equilibrium temperature
- 1,187 K
- Starlight received
- 331 × Earth
- Orbital period
- 3.696 days
- Average distance from its star
- 0.04565 AU
Star
- Host star
- Kepler-20
- Spectral class
- G — sun-like
- Surface temperature
- 5,495 K
- Radius
- 0.9164 × Sun
- Mass
- 0.929 × Sun
- Age
- 5.6 billion years
System
- Distance from Earth
- 921.6 light-years (282.6 parsecs)
- Stars in system
- 2
- Known planets
- 6
Discovery
- Year
- 2011
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.