| Kepler-17b | |
| Discoverer: | Aldo S. Bonomo et al. |
| Discovered: | 25 October 2011 |
| Apsis: | astron |
| Semimajor: | 0.0268± |
| Period: | 1.4857108 ± 0.0000002 d |
| Inclination: | 87.22 ± 0.15[1] |
| Mean Radius: | 1.33 ± 0.04 |
| Mass: | 2.47 ± 0.10 |
| Density: | 1.3± |
| Surface Grav: | 3.54± |
| Single Temperature: | 2229 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 K.[2]
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°.