The Kepler-331 System
Kepler-331 is a planetary system in the constellation Lyra hosting 3 confirmed exoplanets, about 1,892 light-years from Earth.
Size Comparison: The Planets of Kepler-331
Kepler-331: Star and Habitable Zone
Kepler-331
- Surface temperature
- 4,347 K (Sun: 5,772 K)
- Radius
- 0.49 R☉
Habitable zone of Kepler-331: 0.224–0.557 AU (conservative: 0.284–0.528 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 3 Planets in the Kepler-331 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-331 b | Super Earth | 8.5 d | 1.82 R⊕ | 0.30 | 2014 |
| Kepler-331 c | Super Earth | 17 d | 1.84 R⊕ | 0.35 | 2014 |
| Kepler-331 d | Super Earth | 32 d | 1.64 R⊕ | 0.45 | 2014 |
Discovery History
The first planet found here, Kepler-331 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-331 b (Transit)
- 2014 — Kepler-331 c (Transit)
- 2014 — Kepler-331 d (Transit)
Frequently Asked Questions About Kepler-331
How many planets does Kepler-331 have?
Kepler-331 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-331 system habitable?
None of the known planets in Kepler-331 orbit within the star's habitable zone.
How far away is Kepler-331?
Kepler-331 is about 1,892 light-years from Earth in the constellation Lyra.
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