K2-129 b
A confirmed exoplanet orbiting K2-129.
Compared with Earth
- Size
- Almost exactly Earth's width.
- Starlight
- About 4.5 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 8.2 Earth days.
Planet
- Radius
- 1.04 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- 4.5 × Earth
- Orbital period
- 8.239 days
- Average distance from its star
- 0.057 AU
Star
- Host star
- K2-129
- Spectral class
- M — red dwarf
- Surface temperature
- 3,459 K
- Radius
- 0.36 × Sun
- Mass
- 0.36 × Sun
- Age
- Unknown
System
- Distance from Earth
- 90.66 light-years (27.8 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.