K2-123 b
A confirmed exoplanet orbiting K2-123.
Compared with Earth
- Size
- About 2.8 times Earth's width.
- Temperature
- About 65 °C (149 °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
- 2.76 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 338 K
- Starlight received
- Unknown
- Orbital period
- 30.95 days
- Average distance from its star
- 0.1649 AU
Star
- Host star
- K2-123
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,035 K
- Radius
- 0.59 × Sun
- Mass
- 0.62 × Sun
- Age
- Unknown
System
- Distance from Earth
- 526.9 light-years (161.6 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2017
- Method
- Transit
- Facility
- K2
Data from the NASA Exoplanet Archive, synced October 14, 2026.