K2-339 b
A confirmed exoplanet orbiting K2-339.
Compared with Earth
- Size
- About 1.9 times Earth's width.
- Temperature
- About 235 °C (455 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 20 Earth days.
Planet
- Radius
- 1.92 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 508 K
- Starlight received
- Unknown
- Orbital period
- 19.51 days
- Average distance from its star
- Unknown
Star
- Host star
- K2-339
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,857 K
- Radius
- 0.72 × Sun
- Mass
- 0.74 × Sun
- Age
- Unknown
System
- Distance from Earth
- 1,175 light-years (360.4 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2021
- Method
- Transit
- Facility
- K2
Data from the NASA Exoplanet Archive, synced October 14, 2026.