K2-117 b
A confirmed exoplanet orbiting K2-117.
Compared with Earth
- Size
- About 2 times Earth's width.
- Temperature
- About 595 °C (1,103 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 1.3 Earth days.
Planet
- Radius
- 2.03 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 868 K
- Starlight received
- Unknown
- Orbital period
- 1.292 days
- Average distance from its star
- 0.0189 AU
Star
- Host star
- K2-117
- Spectral class
- M — red dwarf
- Surface temperature
- 3,778 K
- Radius
- 0.51 × Sun
- Mass
- 0.54 × Sun
- Age
- Unknown
System
- Distance from Earth
- 331.5 light-years (101.6 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2017
- Method
- Transit
- Facility
- K2
Data from the NASA Exoplanet Archive, synced October 14, 2026.