Kepler-17b
| Discovery | |
|---|---|
| Discovered by | Aldo S. Bonomo et al. |
| Discovery date | 25 October 2011 |
| Transit method | |
| Orbital characteristics | |
| 0.0268 ± 0.0005 AU (4,009,000 ± 75,000 km) | |
| 1.4857108 ± 0.0000002 d | |
| Inclination | 87.22 ± 0.15 |
| Star | Kepler-17 |
| Physical characteristics | |
| 1.33 ± 0.04 RJ | |
| Mass | 2.47 ± 0.10 MJ |
Mean density | 1.30 ± 0.14 g/cm3 (0.0470 ± 0.0051 lb/cu in) |
| 3.54 ± 0.03 m/s2 (11.614 ± 0.098 ft/s2) | |
| Temperature | 2229+50 −58 K. |
Kepler-17b is a planet in the orbit of star Kepler-17, first observed by the Kepler spacecraft observatory in 2011. Kepler-17b is a gas giant nearly 2.45 times the mass of Jupiter, and is sometimes described as a "super-Jupiter".
The planet is likely to be tidally locked to the parent star. In 2015, the planetary nightside temperature was estimated to be equal to 2229+50
−58 K.
The study in 2012, utilizing a Rossiter–McLaughlin effect, have determined the planetary orbit is probably aligned with the equatorial plane of the star, misalignment equal to 0±15°.