The Kepler-57 System
Kepler-57 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 2,101 light-years from Earth.
Size Comparison: The Planets of Kepler-57
Kepler-57: Star and Habitable Zone
Kepler-57
- Surface temperature
- 5,188 K (Sun: 5,772 K)
- Mass
- 0.86 M☉
- Radius
- 0.83 R☉
Habitable zone of Kepler-57: 0.517–1.240 AU (conservative: 0.654–1.176 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-57 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-57 b | Super Earth | 5.7 d | 3.14 R⊕ | 0.26 | 2012 |
| Kepler-57 c | Super Earth | 12 d | 2.20 R⊕ | 0.30 | 2012 |
Discovery History
The first planet found here, Kepler-57 b, was discovered in 2012 using the transit method.
- 2012 — Kepler-57 b (Transit)
- 2012 — Kepler-57 c (Transit)
Frequently Asked Questions About Kepler-57
How many planets does Kepler-57 have?
Kepler-57 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-57 system habitable?
None of the known planets in Kepler-57 orbit within the star's habitable zone.
How far away is Kepler-57?
Kepler-57 is about 2,101 light-years from Earth in the constellation Cygnus.
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