The Kepler-55 System
Kepler-55 is a planetary system in the constellation Lyra hosting 5 confirmed exoplanets, about 1,888 light-years from Earth.
Size Comparison: The Planets of Kepler-55
Kepler-55: Star and Habitable Zone
Kepler-55
- Surface temperature
- 4,362 K (Sun: 5,772 K)
- Mass
- 0.62 M☉
- Radius
- 0.58 R☉
Habitable zone of Kepler-55: 0.266–0.660 AU (conservative: 0.336–0.626 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 5 Planets in the Kepler-55 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-55 b | Mini Neptune | 28 d | 2.43 R⊕ | 0.40 | 2012 |
| Kepler-55 c | Mini Neptune | 42 d | 2.21 R⊕ | 0.50 | 2012 |
| Kepler-55 d | Super Earth | 2.2 d | 1.59 R⊕ | 0.28 | 2014 |
| Kepler-55 e | Super Earth | 4.6 d | 1.55 R⊕ | 0.29 | 2014 |
| Kepler-55 f | Super Earth | 10 d | 1.59 R⊕ | 0.33 | 2014 |
Discovery History
The first planet found here, Kepler-55 b, was discovered in 2012 using the transit method. The most recent addition, Kepler-55 f, followed in 2014.
- 2012 — Kepler-55 b (Transit)
- 2012 — Kepler-55 c (Transit)
- 2014 — Kepler-55 d (Transit)
- 2014 — Kepler-55 e (Transit)
- 2014 — Kepler-55 f (Transit)
Frequently Asked Questions About Kepler-55
How many planets does Kepler-55 have?
Kepler-55 has 5 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-55 system habitable?
None of the known planets in Kepler-55 orbit within the star's habitable zone.
How far away is Kepler-55?
Kepler-55 is about 1,888 light-years from Earth in the constellation Lyra.
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