The Kepler-181 System
Kepler-181 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 1,987 light-years from Earth.
Size Comparison: The Planets of Kepler-181
Kepler-181: Star and Habitable Zone
Kepler-181
- Surface temperature
- 5,333 K (Sun: 5,772 K)
- Radius
- 0.75 R☉
Habitable zone of Kepler-181: 0.491–1.173 AU (conservative: 0.622–1.112 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-181 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-181 b | Super Earth | 3.1 d | 1.27 R⊕ | 0.29 | 2014 |
| Kepler-181 c | Super Earth | 4.3 d | 1.99 R⊕ | 0.26 | 2014 |
Discovery History
The first planet found here, Kepler-181 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-181 b (Transit)
- 2014 — Kepler-181 c (Transit)
Frequently Asked Questions About Kepler-181
How many planets does Kepler-181 have?
Kepler-181 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-181 system habitable?
None of the known planets in Kepler-181 orbit within the star's habitable zone.
How far away is Kepler-181?
Kepler-181 is about 1,987 light-years from Earth in the constellation Cygnus.
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