 Jupiter compared to XO-6b | |
| Discovery[1] | |
|---|---|
| Discovery site | Haleakalā Observatory inMaui, Hawaii |
| Discovery date | December 8th, 2016 |
| Transit | |
| Orbital characteristics[2] | |
| 0.0412±0.002 AU | |
| Eccentricity | 0.00 (fixed)[1] |
| 3.7649923+45 −46 d | |
| Inclination | 84.77°+0.82° −0.66° |
| 2,458,843.93943±0.00012 JD[1] | |
| Semi-amplitude | <450 m/s[1] |
| Physical characteristics[2] | |
| 2.17±0.20 RJ | |
| Mass | 1.73±0.20 MJ |
| Temperature | 1,670±25 K |
XO-6b is a transitingexoplanet, ahot Jupiter, orbiting the star XO-6 around 760light years (230parsecs) away from Earth. It was discovered in 2016 by theXO planet search team.[3][4]
XO-6b is one of the puffiest planets ever discovered, with a maximum mass of 4.4 times of Jupiter. It is over twice as wide, making it one of the largest exoplanets ever found (seelist of largest exoplanets). Later estimates, however, make it around two times the mass of Jupiter.[3][4]
XO-6b has a tight orbit, which means ayear on it is only about 4 days. XO-6 is slightly more than one-tenth as far from its host star asMercury is to the sun.
XO-6b orbits XO-6, a faint 10th magnitude star in the constellationCamelopardalis.[5] Due to its magnitude, this star is too faint to be seen with the naked eye, but can be seen with a telescope.[citation needed] XO-6 is aF-type main-sequence star with about 1.5 times the mass of theSun. It is also radiating 4 times as bright, and is almost twice the size of the Sun. It is also hotter, with a temperature of 6720kelvins, which gives it the typical hue of an F-type star.[3] Unlike most other stars of its kind, XO-6 rotates rapidly at a rate of 43 km/s.
