The K2-331 System
K2-331 is a planetary system in the constellation Cancer hosting 2 confirmed exoplanets, about 690 light-years from Earth.
Size Comparison: The Planets of K2-331
K2-331: Star and Habitable Zone
K2-331
- Surface temperature
- 5,994 K (Sun: 5,772 K)
- Mass
- 1.10 M☉
- Radius
- 1.06 R☉
Habitable zone of K2-331: 0.845–1.980 AU (conservative: 1.070–1.877 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 2 Planets in the K2-331 System
Discovery History
The first planet found here, K2-331 b, was discovered in 2021 using the transit method.
Frequently Asked Questions About K2-331
How many planets does K2-331 have?
K2-331 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the K2-331 system habitable?
None of the known planets in K2-331 orbit within the star's habitable zone.
How far away is K2-331?
K2-331 is about 690 light-years from Earth in the constellation Cancer.
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