The Kepler-178 System
Kepler-178 is a planetary system in the constellation Lyra hosting 3 confirmed exoplanets, about 2,335 light-years from Earth.
Size Comparison: The Planets of Kepler-178
Kepler-178: Star and Habitable Zone
Kepler-178
- Surface temperature
- 5,676 K (Sun: 5,772 K)
- Radius
- 1.07 R☉
Habitable zone of Kepler-178: 0.777–1.835 AU (conservative: 0.984–1.740 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-178 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-178 b | Mini Neptune | 9.6 d | 2.90 R⊕ | 0.23 | 2014 |
| Kepler-178 c | Mini Neptune | 21 d | 2.88 R⊕ | 0.25 | 2014 |
| Kepler-178 d | Sub Neptune | 97 d | 3.95 R⊕ | 0.40 | 2014 |
Discovery History
The first planet found here, Kepler-178 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-178 b (Transit)
- 2014 — Kepler-178 c (Transit)
- 2014 — Kepler-178 d (Transit)
Frequently Asked Questions About Kepler-178
How many planets does Kepler-178 have?
Kepler-178 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-178 system habitable?
None of the known planets in Kepler-178 orbit within the star's habitable zone.
How far away is Kepler-178?
Kepler-178 is about 2,335 light-years from Earth in the constellation Lyra.
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