The Kepler-259 System
Kepler-259 is a planetary system in the constellation Lyra hosting 2 confirmed exoplanets, about 3,269 light-years from Earth.
Size Comparison: The Planets of Kepler-259
Kepler-259: Star and Habitable Zone
Kepler-259
- Surface temperature
- 5,938 K (Sun: 5,772 K)
- Radius
- 0.90 R☉
Habitable zone of Kepler-259: 0.705–1.654 AU (conservative: 0.893–1.568 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-259 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-259 b | Mini Neptune | 8.1 d | 2.80 R⊕ | 0.23 | 2014 |
| Kepler-259 c | Mini Neptune | 37 d | 2.70 R⊕ | 0.30 | 2014 |
Discovery History
The first planet found here, Kepler-259 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-259 b (Transit)
- 2014 — Kepler-259 c (Transit)
Frequently Asked Questions About Kepler-259
How many planets does Kepler-259 have?
Kepler-259 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-259 system habitable?
None of the known planets in Kepler-259 orbit within the star's habitable zone.
How far away is Kepler-259?
Kepler-259 is about 3,269 light-years from Earth in the constellation Lyra.
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