The Kepler-401 System
Kepler-401 is a planetary system in the constellation Cygnus hosting 3 confirmed exoplanets, about 3,149 light-years from Earth.
Size Comparison: The Planets of Kepler-401
Kepler-401: Star and Habitable Zone
Kepler-401
- Surface temperature
- 6,117 K (Sun: 5,772 K)
- Radius
- 1.33 R☉
Habitable zone of Kepler-401: 1.098–2.567 AU (conservative: 1.391–2.434 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-401 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-401 b | Super Earth | 14 d | 1.71 R⊕ | 0.27 | 2014 |
| Kepler-401 c | Mini Neptune | 47 d | 2.15 R⊕ | 0.27 | 2014 |
| Kepler-401 d | Mini Neptune | 184 d | 2.27 R⊕ | 0.38 | 2016 |
Discovery History
The first planet found here, Kepler-401 b, was discovered in 2014 using the transit method. The most recent addition, Kepler-401 d, followed in 2016.
- 2014 — Kepler-401 b (Transit)
- 2014 — Kepler-401 c (Transit)
- 2016 — Kepler-401 d (Transit)
Frequently Asked Questions About Kepler-401
How many planets does Kepler-401 have?
Kepler-401 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-401 system habitable?
None of the known planets in Kepler-401 orbit within the star's habitable zone.
How far away is Kepler-401?
Kepler-401 is about 3,149 light-years from Earth in the constellation Cygnus.
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