K2-189 b
A confirmed exoplanet orbiting K2-189.
Compared with Earth
- Size
- About 1.4 times Earth's width.
- Temperature
- About 930 °C (1,706 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 497 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 2.6 Earth days.
Planet
- Radius
- 1.403 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 1,203 K
- Starlight received
- 497 × Earth
- Orbital period
- 2.588 days
- Average distance from its star
- Unknown
Star
- Host star
- K2-189
- Spectral class
- G — sun-like
- Surface temperature
- 5,442 K
- Radius
- 0.879 × Sun
- Mass
- 0.85 × Sun
- Age
- Unknown
System
- Distance from Earth
- 789.7 light-years (242.1 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2018
- Method
- Transit
- Facility
- K2
Data from the NASA Exoplanet Archive, synced October 14, 2026.