K2-238 b
A confirmed exoplanet orbiting K2-238.
Compared with Earth
- Size
- About 15 times Earth's width.
- Mass
- About 273 times Earth's mass.
- Temperature
- About 1,314 °C (2,397 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 3.2 Earth days.
Planet
- Radius
- 14.57 × Earth
- Mass
- 273.3 × Earth
- Density
- 0.56 g/cm³
- Equilibrium temperature
- 1,587 K
- Starlight received
- Unknown
- Orbital period
- 3.205 days
- Average distance from its star
- 0.046 AU
Star
- Host star
- K2-238
- Spectral class
- G — sun-like
- Surface temperature
- 5,630 K
- Radius
- 1.59 × Sun
- Mass
- 1.19 × Sun
- Age
- 5.63 billion years
System
- Distance from Earth
- 1,755 light-years (538 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2018
- Method
- Transit
- Facility
- K2
Data from the NASA Exoplanet Archive, synced October 14, 2026.