The Kepler-172 System
Kepler-172 is a planetary system in the constellation Lyra hosting 4 confirmed exoplanets, about 2,703 light-years from Earth.
Size Comparison: The Planets of Kepler-172
Kepler-172: Star and Habitable Zone
Kepler-172
- Surface temperature
- 5,526 K (Sun: 5,772 K)
- Radius
- 1.09 R☉
Habitable zone of Kepler-172: 0.756–1.794 AU (conservative: 0.957–1.701 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 4 Planets in the Kepler-172 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-172 b | Mini Neptune | 2.9 d | 2.35 R⊕ | 0.24 | 2014 |
| Kepler-172 c | Mini Neptune | 6.4 d | 2.86 R⊕ | 0.22 | 2014 |
| Kepler-172 d | Mini Neptune | 15 d | 2.25 R⊕ | 0.26 | 2014 |
| Kepler-172 e | Mini Neptune | 35 d | 2.76 R⊕ | 0.28 | 2014 |
Discovery History
The first planet found here, Kepler-172 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-172 b (Transit)
- 2014 — Kepler-172 c (Transit)
- 2014 — Kepler-172 d (Transit)
- 2014 — Kepler-172 e (Transit)
Frequently Asked Questions About Kepler-172
How many planets does Kepler-172 have?
Kepler-172 has 4 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-172 system habitable?
None of the known planets in Kepler-172 orbit within the star's habitable zone.
How far away is Kepler-172?
Kepler-172 is about 2,703 light-years from Earth in the constellation Lyra.
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