K2-203 b
A confirmed exoplanet orbiting K2-203.
Compared with Earth
- Size
- About 1.3 times Earth's width.
- Temperature
- About 465 °C (869 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 9.7 Earth days.
Planet
- Radius
- 1.265 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 738.4 K
- Starlight received
- Unknown
- Orbital period
- 9.695 days
- Average distance from its star
- 0.0824 AU
Star
- Host star
- K2-203
- Spectral class
- K — orange dwarf
- Surface temperature
- 5,026 K
- Radius
- 0.765 × Sun
- Mass
- 0.793 × Sun
- Age
- 6.9 billion years
System
- Distance from Earth
- 541.9 light-years (166.1 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.