The Kepler-339 System
Kepler-339 is a planetary system in the constellation Cygnus hosting 3 confirmed exoplanets, about 2,011 light-years from Earth.
Size Comparison: The Planets of Kepler-339
Kepler-339: Star and Habitable Zone
Kepler-339
- Surface temperature
- 5,631 K (Sun: 5,772 K)
- Radius
- 0.80 R☉
Habitable zone of Kepler-339: 0.577–1.364 AU (conservative: 0.730–1.293 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-339 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-339 b | Super Earth | 5.0 d | 1.42 R⊕ | 0.29 | 2014 |
| Kepler-339 c | Terrestrial | 7.0 d | 1.15 R⊕ | 0.30 | 2014 |
| Kepler-339 d | Terrestrial | 11 d | 1.17 R⊕ | 0.31 | 2014 |
Discovery History
The first planet found here, Kepler-339 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-339 b (Transit)
- 2014 — Kepler-339 c (Transit)
- 2014 — Kepler-339 d (Transit)
Frequently Asked Questions About Kepler-339
How many planets does Kepler-339 have?
Kepler-339 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-339 system habitable?
None of the known planets in Kepler-339 orbit within the star's habitable zone.
How far away is Kepler-339?
Kepler-339 is about 2,011 light-years from Earth in the constellation Cygnus.
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