WASP-50
WASP-50 is a G-type main-sequence star about 594 light-years away. The star is older than the Sun and slightly depleted in heavy elements compared to the Sun, and has a close to average starspot activity. Despite its advanced age, the star is rotating rapidly, being spun up by the tides raised by a giant planet on a close orbit.
The star was named Chaophraya in December 2019 by Thai amateur astronomers through NameExoWorlds.
Planetary system
In 2011 a transiting hot superjovian planet, WASP-50b (named Maeping in 2019) was detected. In 2022 its albedo was found to be no more than 0.44, meaning that the planet reflects less than 44% of the light irradiated by its host star. This allows the planetary equilibrium temperature to be constrained at 1393±42 K.