K2-28 b
A confirmed exoplanet orbiting K2-28.
Compared with Earth
- Size
- About 2.3 times Earth's width.
- Temperature
- About 295 °C (563 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 2.3 Earth days.
Planet
- Radius
- 2.32 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 568 K
- Starlight received
- Unknown
- Orbital period
- 2.26 days
- Average distance from its star
- 0.0214 AU
Star
- Host star
- K2-28
- Spectral class
- M — red dwarf
- Surface temperature
- 3,214 K
- Radius
- 0.288 × Sun
- Mass
- 0.257 × Sun
- Age
- Unknown
System
- Distance from Earth
- 205.5 light-years (63 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2016
- Method
- Transit
- Facility
- K2
Data from the NASA Exoplanet Archive, synced October 14, 2026.