Kepler-34b
| Discovery | |
|---|---|
| Discovery date | 01-11-2012 |
Detection method | Transit (Kepler Mission) |
| Orbital characteristics | |
| Epoch BJD 2454969.2000 | |
Semi-major axis | 1.0896 ± 0.0009 AU (163,000,000 ± 130,000 km) |
| Eccentricity | 0.182 +0.0016 −0.0020 |
Orbital period (sidereal) | 288.822 +0.063 −0.081 d |
| Inclination | 90.355 +0.026 −0.018 |
| −1.74 +0.14 −0.16 | |
| 106.5 +2.5 −2.0 | |
| Star | Kepler-34 |
| Physical characteristics | |
Mean radius | 0.764 +0.0012 −0.0014 RJ 8.56 REarth |
| Mass | 0.220 +0.011 −0.010 MJ (69.9 MEarth) |
Mean density | 0.613 +0.045 −0.041 g cm−3 |
Surface gravity | 936 +57 −54 m/s² |
| Temperature | 323 |
Kepler-34b (formally Kepler-34(AB)b) is a circumbinary planet announced with Kepler-35b. It is a small gas giant that orbits every ~288 days around two stars. Despite the planet's relatively long orbital period, its existence could be confirmed quickly due to transiting both of its host stars.
The Kepler-34b is unlikely to form at the current orbit, and likely migrated early from birth orbit beyond 1.5 AU away from parent binary stars, suffering multiple giant impacts in the process.[1] The eccentricity of planetary orbit may be acquired on the last stage of migration, due to interaction with the residual debris disk,[2] or by ejection of the second planet.[3]
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Categories:
- Exoplanets discovered in 2011
- Exoplanets discovered by the Kepler space telescope
- Transiting exoplanets
- Circumbinary planets
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