The Kepler-27 System
Kepler-27 is a planetary system in the constellation Cygnus hosting 3 confirmed exoplanets, about 3,406 light-years from Earth.
Size Comparison: The Planets of Kepler-27
Kepler-27: Star and Habitable Zone
Kepler-27
- Surface temperature
- 5,251 K (Sun: 5,772 K)
- Mass
- 0.93 M☉
- Radius
- 0.82 R☉
Habitable zone of Kepler-27: 0.522–1.250 AU (conservative: 0.661–1.185 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-27 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-27 b | Super Earth | 15 d | 4.00 R⊕ | 0.21 | 2011 |
| Kepler-27 c | Neptune-like | 31 d | 4.90 R⊕ | 0.24 | 2011 |
| Kepler-27 d | Mini Neptune | 6.5 d | 2.71 R⊕ | 0.23 | 2021 |
Discovery History
The first planet found here, Kepler-27 b, was discovered in 2011 using the transit method. The most recent addition, Kepler-27 d, followed in 2021.
- 2011 — Kepler-27 b (Transit)
- 2011 — Kepler-27 c (Transit)
- 2021 — Kepler-27 d (Transit)
Frequently Asked Questions About Kepler-27
How many planets does Kepler-27 have?
Kepler-27 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-27 system habitable?
None of the known planets in Kepler-27 orbit within the star's habitable zone.
How far away is Kepler-27?
Kepler-27 is about 3,406 light-years from Earth in the constellation Cygnus.
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