Kepler-538 b
A confirmed exoplanet orbiting Kepler-538.
Compared with Earth
- Size
- About 2.2 times Earth's width.
- Mass
- About 13 times Earth's mass.
- Temperature
- About 144 °C (291 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 5.1 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 82 Earth days.
Planet
- Radius
- 2.215 × Earth
- Mass
- 12.9 × Earth
- Density
- 6.5 g/cm³
- Equilibrium temperature
- 417 K
- Starlight received
- 5.07 × Earth
- Orbital period
- 81.74 days
- Average distance from its star
- 0.3554 AU
Star
- Host star
- Kepler-538
- Spectral class
- G — sun-like
- Surface temperature
- 5,534 K
- Radius
- 0.8717 × Sun
- Mass
- 0.892 × Sun
- Age
- 5.3 billion years
System
- Distance from Earth
- 508.7 light-years (156 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2016
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.