The Kepler-46 System
Kepler-46 is a planetary system in the constellation Lyra hosting 3 confirmed exoplanets, about 2,534 light-years from Earth.
Size Comparison: The Planets of Kepler-46
Planets without a measured radius are not shown.
Kepler-46: Star and Habitable Zone
Kepler-46
- Surface temperature
- 5,155 K (Sun: 5,772 K)
- Mass
- 0.90 M☉
- Radius
- 0.94 R☉
- Luminosity
- 0.5559 L☉
- Age
- 9.7 billion years (Sun: 4.6)
Habitable zone of Kepler-46: 0.580–1.393 AU (conservative: 0.734–1.321 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-46 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-46 b | Cold Gas Giant | 34 d | 9.06 R⊕ | 0.16 | 2012 |
| Kepler-46 c | Cold Gas Giant | 57 d | — | 0.19 | 2012 |
| Kepler-46 d | Super Earth | 6.8 d | 1.64 R⊕ | 0.29 | 2014 |
Discovery History
The first planet found here, Kepler-46 b, was discovered in 2012 using the transit method. The most recent addition, Kepler-46 d, followed in 2014.
- 2012 — Kepler-46 b (Transit)
- 2012 — Kepler-46 c (Transit Timing Variations)
- 2014 — Kepler-46 d (Transit)
Frequently Asked Questions About Kepler-46
How many planets does Kepler-46 have?
Kepler-46 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-46 system habitable?
None of the known planets in Kepler-46 orbit within the star's habitable zone.
How far away is Kepler-46?
Kepler-46 is about 2,534 light-years from Earth in the constellation Lyra.
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