 Size comparison of XO-4b with Jupiter. | |
| Discovery | |
|---|---|
| Discovered by | McCullough et al. |
| Discovery site | Maui, Hawaii |
| Discovery date | May 19, 2008 |
| Transit | |
| Orbital characteristics | |
| 0.0555 ± 0.00011 AU (8,303,000 ± 16,000 km) | |
| Eccentricity | 0.0024 |
| 4.12502 ± 2e-5 d 0.011293 y | |
| Inclination | 88.7 ± 1.1 |
| Star | XO-4 |
| Physical characteristics | |
| 1.34 ± 0.048 RJ | |
| Mass | 1.72 ± 0.2 MJ |
Mean density | 0.948 g/cm3[citation needed] |
| 24.8 m/s2 (2.53 g0) | |
| Temperature | ~1333[clarification needed] |
XO-4b is an extrasolar planet approximately 956 light years away in the constellation of Lynx. This planet was found by the transit method by McCullough in May 2008. The planet has mass 1.72 MJ and radius 1.34 RJ. This planet orbits very close to the F-type parent star, as it is typical for transiting planets, classing this planet as Hot Jupiter.