The Kepler-231 System
Kepler-231 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 1,033 light-years from Earth.
Size Comparison: The Planets of Kepler-231
Kepler-231: Star and Habitable Zone
Kepler-231
- Surface temperature
- 3,767 K (Sun: 5,772 K)
- Radius
- 0.49 R☉
Habitable zone of Kepler-231: 0.170–0.435 AU (conservative: 0.215–0.412 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 Kepler-231 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-231 b | Super Earth | 10 d | 1.73 R⊕ | 0.34 | 2014 |
| Kepler-231 c | Super Earth | 19 d | 1.93 R⊕ | 0.42 | 2014 |
Discovery History
The first planet found here, Kepler-231 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-231 b (Transit)
- 2014 — Kepler-231 c (Transit)
Frequently Asked Questions About Kepler-231
How many planets does Kepler-231 have?
Kepler-231 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-231 system habitable?
None of the known planets in Kepler-231 orbit within the star's habitable zone.
How far away is Kepler-231?
Kepler-231 is about 1,033 light-years from Earth in the constellation Cygnus.
Explore the Kepler-231 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
