K2-55 b
A confirmed exoplanet orbiting K2-55.
Compared with Earth
- Size
- About 4.4 times Earth's width.
- Mass
- About 44 times Earth's mass.
- Temperature
- About 627 °C (1,160 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 141 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 2.8 Earth days.
Planet
- Radius
- 4.43 × Earth
- Mass
- 44 × Earth
- Density
- 2.8 g/cm³
- Equilibrium temperature
- 900 K
- Starlight received
- 141.3 × Earth
- Orbital period
- 2.849 days
- Average distance from its star
- Unknown
Star
- Host star
- K2-55
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,300 K
- Radius
- 0.715 × Sun
- Mass
- 0.688 × Sun
- Age
- Unknown
System
- Distance from Earth
- 520.3 light-years (159.5 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.