WASP-39b, officially named Bocaprins, is a "hot Jupiter" extrasolar planet discovered in February 2011[3] by the WASP project, notable for containing a substantial amount of water in its atmosphere.
[1] As part of the NameExoWorlds campaigns at the 100th anniversary of the IAU, the planet was named Bocaprins, after the beach Boca Prins [de; es] in the Arikok National Park of Aruba.
[6] The exoplanet orbits very close (7 million km) to WASP-39, its host star, every 4 days.
[8] High-fidelity spectra obtained by the James Webb Space Telescope in 2022 did not confirm a disequilibrium chemistry.
[6][10][7] Planetary transmission spectra taken in 2022 has indicated the atmosphere of WASP-39b is partially cloudy, and planet C/O ratio appears to be subsolar.