WASP-39b
Exoplanet WASP-39b artist's concept | |
| Discovery | |
|---|---|
| Discovery site | WASP |
| Discovery date | 2011 |
| Transit | |
| Designations | |
| Bocaprins | |
| Orbital characteristics | |
| 0.0486 ± 0.0005 AU (7,270,000 ± 75,000 km) | |
| Eccentricity | <0.048 |
| 4.05529470(97) d | |
| Inclination | 87.83+0.25 −0.22 |
| Semi-amplitude | 36.9+6.0 −5.3 m/s |
| Star | WASP-39 |
| Physical characteristics | |
| 1.27±0.04 RJ (91000±3000 km) | |
| Mass | 0.275+0.042 −0.043 MJ |
Mean density | 0.166+0.032 −0.029 g/cm3 |
WASP-39b, officially named Bocaprins, is a hot Jupiter extrasolar planet discovered in February 2011 by the WASP project, notable for containing a substantial amount of water in its atmosphere. In addition WASP-39b was the first exoplanet found to contain carbon dioxide in its atmosphere, and likewise for sulfur dioxide.
WASP-39b orbits the star WASP-39 in the constellation Virgo, about 700 light-years from Earth. As part of the NameExoWorlds campaigns at the 100th anniversary of the IAU, the planet was named Bocaprins, after the beach Boca Prins in the Arikok National Park of Aruba.