The Kepler-303 System
Kepler-303 is a planetary system in the constellation Lyra hosting 2 confirmed exoplanets, about 684 light-years from Earth.
Size Comparison: The Planets of Kepler-303
Kepler-303: Star and Habitable Zone
Kepler-303
- Surface temperature
- 3,944 K (Sun: 5,772 K)
- Radius
- 0.49 R☉
Habitable zone of Kepler-303: 0.184–0.466 AU (conservative: 0.232–0.442 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 2 Planets in the Kepler-303 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-303 b | Terrestrial | 1.9 d | 0.89 R⊕ | 0.30 | 2014 |
| Kepler-303 c | Terrestrial | 7.1 d | 1.14 R⊕ | 0.34 | 2014 |
Discovery History
The first planet found here, Kepler-303 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-303 b (Transit)
- 2014 — Kepler-303 c (Transit)
Frequently Asked Questions About Kepler-303
How many planets does Kepler-303 have?
Kepler-303 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-303 system habitable?
None of the known planets in Kepler-303 orbit within the star's habitable zone.
How far away is Kepler-303?
Kepler-303 is about 684 light-years from Earth in the constellation Lyra.
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