The Kepler-171 System
Kepler-171 is a planetary system in the constellation Cygnus hosting 3 confirmed exoplanets, about 2,818 light-years from Earth.
Size Comparison: The Planets of Kepler-171
Kepler-171: Star and Habitable Zone
Kepler-171
- Surface temperature
- 5,642 K (Sun: 5,772 K)
- Radius
- 0.84 R☉
Habitable zone of Kepler-171: 0.605–1.431 AU (conservative: 0.767–1.357 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-171 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-171 b | Mini Neptune | 4.2 d | 2.34 R⊕ | 0.24 | 2014 |
| Kepler-171 c | Mini Neptune | 11 d | 2.56 R⊕ | 0.24 | 2014 |
| Kepler-171 d | Super Earth | 40 d | 1.89 R⊕ | 0.34 | 2014 |
Discovery History
The first planet found here, Kepler-171 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-171 b (Transit)
- 2014 — Kepler-171 c (Transit)
- 2014 — Kepler-171 d (Transit)
Frequently Asked Questions About Kepler-171
How many planets does Kepler-171 have?
Kepler-171 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-171 system habitable?
None of the known planets in Kepler-171 orbit within the star's habitable zone.
How far away is Kepler-171?
Kepler-171 is about 2,818 light-years from Earth in the constellation Cygnus.
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