The Kepler-403 System
Kepler-403 is a planetary system in the constellation Cygnus hosting 3 confirmed exoplanets, about 2,741 light-years from Earth.
Size Comparison: The Planets of Kepler-403
Kepler-403: Star and Habitable Zone
Kepler-403
- Surface temperature
- 6,090 K (Sun: 5,772 K)
- Radius
- 1.33 R☉
Habitable zone of Kepler-403: 1.087–2.542 AU (conservative: 1.377–2.410 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-403 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-403 b | Terrestrial | 7.0 d | 1.25 R⊕ | 0.29 | 2014 |
| Kepler-403 c | Super Earth | 54 d | 1.75 R⊕ | 0.29 | 2014 |
| Kepler-403 d | Super Earth | 14 d | 1.42 R⊕ | 0.29 | 2016 |
Discovery History
The first planet found here, Kepler-403 b, was discovered in 2014 using the transit method. The most recent addition, Kepler-403 d, followed in 2016.
- 2014 — Kepler-403 b (Transit)
- 2014 — Kepler-403 c (Transit)
- 2016 — Kepler-403 d (Transit)
Frequently Asked Questions About Kepler-403
How many planets does Kepler-403 have?
Kepler-403 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-403 system habitable?
None of the known planets in Kepler-403 orbit within the star's habitable zone.
How far away is Kepler-403?
Kepler-403 is about 2,741 light-years from Earth in the constellation Cygnus.
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