The Kepler-56 System
Kepler-56 is a planetary system in the constellation Cygnus hosting 3 confirmed exoplanets, about 2,978 light-years from Earth.
Size Comparison: The Planets of Kepler-56
Planets without a measured radius are not shown.
Kepler-56: Star and Habitable Zone
Kepler-56
- Surface temperature
- 4,819 K (Sun: 5,772 K)
- Radius
- 4.22 R☉
Habitable zone of Kepler-56: 2.318–5.645 AU (conservative: 2.936–5.352 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-56 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-56 b | Cold Gas Giant | 11 d | 6.51 R⊕ | 0.12 | 2012 |
| Kepler-56 c | Cold Gas Giant | 21 d | 9.80 R⊕ | 0.09 | 2012 |
| Kepler-56 d | Cold Gas Giant | 1,002 d | — | 0.36 | 2016 |
Discovery History
The first planet found here, Kepler-56 b, was discovered in 2012 using the transit method. The most recent addition, Kepler-56 d, followed in 2016.
- 2012 — Kepler-56 b (Transit)
- 2012 — Kepler-56 c (Transit)
- 2016 — Kepler-56 d (Radial Velocity)
Frequently Asked Questions About Kepler-56
How many planets does Kepler-56 have?
Kepler-56 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-56 system habitable?
None of the known planets in Kepler-56 orbit within the star's habitable zone.
How far away is Kepler-56?
Kepler-56 is about 2,978 light-years from Earth in the constellation Cygnus.
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