K2-288 B b
A confirmed exoplanet orbiting K2-288 B.
Compared with Earth
- Size
- About 1.9 times Earth's width.
- Temperature
- About -47 °C (-52 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 31 Earth days.
Planet
- Radius
- 1.9 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 226.4 K
- Starlight received
- Unknown
- Orbital period
- 31.39 days
- Average distance from its star
- 0.164 AU
Star
- Host star
- K2-288 B
- Spectral class
- M — red dwarf
- Surface temperature
- 3,341 K
- Radius
- 0.32 × Sun
- Mass
- 0.33 × Sun
- Age
- 1 billion years
System
- Distance from Earth
- 214 light-years (65.61 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2018
- Method
- Transit
- Facility
- K2
Data from the NASA Exoplanet Archive, synced October 14, 2026.