K2-280 b
A confirmed exoplanet orbiting K2-280.
Compared with Earth
- Size
- About 7.5 times Earth's width.
- Mass
- About 37 times Earth's mass.
- Temperature
- About 514 °C (957 °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
- 7.5 × Earth
- Mass
- 37.1 × Earth
- Density
- 0.48 g/cm³
- Equilibrium temperature
- 787 K
- Starlight received
- Unknown
- Orbital period
- 19.9 days
- Average distance from its star
- 0.1461 AU
Star
- Host star
- K2-280
- Spectral class
- G — sun-like
- Surface temperature
- 5,500 K
- Radius
- 1.28 × Sun
- Mass
- 1.03 × Sun
- Age
- 8.96 billion years
System
- Distance from Earth
- 1,277 light-years (391.5 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.