The Kepler-381 System
Kepler-381 is a planetary system in the constellation Lyra hosting 3 confirmed exoplanets, about 872 light-years from Earth.
Size Comparison: The Planets of Kepler-381
Kepler-381: Star and Habitable Zone
Kepler-381
- Surface temperature
- 6,152 K (Sun: 5,772 K)
- Radius
- 1.57 R☉
Habitable zone of Kepler-381: 1.304–3.045 AU (conservative: 1.652–2.887 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-381 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-381 b | Terrestrial | 5.6 d | 0.99 R⊕ | 0.29 | 2014 |
| Kepler-381 c | Terrestrial | 13 d | 1.12 R⊕ | 0.30 | 2014 |
| Kepler-381 d | Terrestrial | 8.3 d | 1.07 R⊕ | 0.30 | 2021 |
Discovery History
The first planet found here, Kepler-381 b, was discovered in 2014 using the transit method. The most recent addition, Kepler-381 d, followed in 2021.
- 2014 — Kepler-381 b (Transit)
- 2014 — Kepler-381 c (Transit)
- 2021 — Kepler-381 d (Transit)
Frequently Asked Questions About Kepler-381
How many planets does Kepler-381 have?
Kepler-381 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-381 system habitable?
None of the known planets in Kepler-381 orbit within the star's habitable zone.
How far away is Kepler-381?
Kepler-381 is about 872 light-years from Earth in the constellation Lyra.
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