The Kepler-239 System
Kepler-239 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 2,114 light-years from Earth.
Size Comparison: The Planets of Kepler-239
Kepler-239: Star and Habitable Zone
Kepler-239
- Surface temperature
- 4,914 K (Sun: 5,772 K)
- Radius
- 0.76 R☉
Habitable zone of Kepler-239: 0.434–1.053 AU (conservative: 0.550–0.998 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-239 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-239 b | Mini Neptune | 12 d | 2.33 R⊕ | 0.27 | 2014 |
| Kepler-239 c | Mini Neptune | 56 d | 2.51 R⊕ | 0.45 | 2014 |
Discovery History
The first planet found here, Kepler-239 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-239 b (Transit)
- 2014 — Kepler-239 c (Transit)
Frequently Asked Questions About Kepler-239
How many planets does Kepler-239 have?
Kepler-239 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-239 system habitable?
None of the known planets in Kepler-239 orbit within the star's habitable zone.
How far away is Kepler-239?
Kepler-239 is about 2,114 light-years from Earth in the constellation Cygnus.
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