The Kepler-258 System
Kepler-258 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 1,879 light-years from Earth.
Size Comparison: The Planets of Kepler-258
Kepler-258: Star and Habitable Zone
Kepler-258
- Surface temperature
- 4,942 K (Sun: 5,772 K)
- Radius
- 0.92 R☉
Habitable zone of Kepler-258: 0.526–1.274 AU (conservative: 0.666–1.208 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-258 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-258 b | Neptune-like | 13 d | 4.06 R⊕ | 0.22 | 2014 |
| Kepler-258 c | Sub Neptune | 34 d | 3.61 R⊕ | 0.33 | 2014 |
Discovery History
The first planet found here, Kepler-258 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-258 b (Transit)
- 2014 — Kepler-258 c (Transit)
Frequently Asked Questions About Kepler-258
How many planets does Kepler-258 have?
Kepler-258 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-258 system habitable?
None of the known planets in Kepler-258 orbit within the star's habitable zone.
How far away is Kepler-258?
Kepler-258 is about 1,879 light-years from Earth in the constellation Cygnus.
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