The Kepler-261 System
Kepler-261 is a planetary system in the constellation Lyra hosting 2 confirmed exoplanets, about 1,036 light-years from Earth.
Size Comparison: The Planets of Kepler-261
Kepler-261: Star and Habitable Zone
Kepler-261
- Surface temperature
- 5,098 K (Sun: 5,772 K)
- Radius
- 0.79 R☉
Habitable zone of Kepler-261: 0.482–1.161 AU (conservative: 0.610–1.100 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-261 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-261 b | Mini Neptune | 10 d | 2.18 R⊕ | 0.28 | 2014 |
| Kepler-261 c | Super Earth | 25 d | 2.00 R⊕ | 0.34 | 2014 |
Discovery History
The first planet found here, Kepler-261 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-261 b (Transit)
- 2014 — Kepler-261 c (Transit)
Frequently Asked Questions About Kepler-261
How many planets does Kepler-261 have?
Kepler-261 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-261 system habitable?
None of the known planets in Kepler-261 orbit within the star's habitable zone.
How far away is Kepler-261?
Kepler-261 is about 1,036 light-years from Earth in the constellation Lyra.
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