The Kepler-11 System
Kepler-11 is a planetary system in the constellation Cygnus hosting 6 confirmed exoplanets, about 2,108 light-years from Earth.
Size Comparison: The Planets of Kepler-11
Kepler-11: Star and Habitable Zone
Kepler-11
- Surface temperature
- 5,663 K (Sun: 5,772 K)
- Mass
- 0.96 M☉
- Radius
- 1.07 R☉
- Age
- 8.5 billion years (Sun: 4.6)
Habitable zone of Kepler-11: 0.773–1.827 AU (conservative: 0.979–1.732 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 6 Planets in the Kepler-11 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-11 b | Mini Neptune | 10 d | 1.80 R⊕ | 0.27 | 2010 |
| Kepler-11 c | Puffy Planet | 13 d | 2.87 R⊕ | 0.23 | 2010 |
| Kepler-11 d | Puffy Planet | 23 d | 3.12 R⊕ | 0.23 | 2010 |
| Kepler-11 e | Neptune-like | 32 d | 4.19 R⊕ | 0.20 | 2010 |
| Kepler-11 f | Puffy Planet | 47 d | 2.49 R⊕ | 0.29 | 2010 |
| Kepler-11 g | Super Earth | 118 d | 3.33 R⊕ | 0.36 | 2010 |
Discovery History
The first planet found here, Kepler-11 b, was discovered in 2010 using the transit method.
- 2010 — Kepler-11 b (Transit)
- 2010 — Kepler-11 c (Transit)
- 2010 — Kepler-11 d (Transit)
- 2010 — Kepler-11 e (Transit)
- 2010 — Kepler-11 f (Transit)
- 2010 — Kepler-11 g (Transit)
Frequently Asked Questions About Kepler-11
How many planets does Kepler-11 have?
Kepler-11 has 6 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-11 system habitable?
None of the known planets in Kepler-11 orbit within the star's habitable zone.
How far away is Kepler-11?
Kepler-11 is about 2,108 light-years from Earth in the constellation Cygnus.
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