WASP-33 is a star with 1.5 times the mass of the Sun, and 1.44 times its radius. It is located 397.73 light years away from the solar system.
WASP-33 is known to have 1 exoplanets in orbit around it.
WASP-33 b was discovered by the SuperWASP observatory, in 2010-09, using the transit method. Its semi-major axis is 0.02 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of WASP-33 b is 665.574 times the mass of Earth. The radius of WASP-33 b is 17.856 that of Earth. At more than 50 Earth masses, WASP-33 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn in our solar system.