WASP-15b
Size comparison of WASP-15b with Jupiter. | |
| Discovery | |
|---|---|
| Discovered by | West et al. (SuperWASP) |
| Discovery site | SAAO |
| Discovery date | April 29, 2009 (Publication date) |
| Transit | |
| Orbital characteristics | |
| 0.0499 ± 0.0018 AU (7,460,000 ± 270,000 km) | |
| Eccentricity | 0 |
| 3.7520656 ± 2.8e-06 d | |
| Inclination | 85.5 ± 0.5 |
| Star | WASP-15 |
| Physical characteristics | |
| 1.428 ± 0.077 RJ | |
| Mass | 0.542 ± 0.05 MJ |
Mean density | 0.247 ± 0.035 g/cm3 (0.0089 ± 0.0013 lb/cu in) |
| Temperature | 1652 ± 28 |
WASP-15b, formally named Asye, is an extrasolar planet discovered in 2008 by the SuperWASP collaboration, which seeks to discover exoplanets that transit their host stars. The planet orbits its host star at a distance of 0.05 AU every four days. The mass of this planet is about one half that of Jupiter, but its radius is nearly 50% larger than Jupiter's, making the density of this planet only one quarter that of water; it is thought that some other form of heating must explain its extremely low density. WASP-15b's discovery was published on April 29, 2009.