WASP-28 is a star with 1.02 times the mass of the Sun, and 1.09 times its radius. It is located 1136.63 light years away from the solar system and is estimated to be 5 billion years old, as compared to the Sun which is roughly 4.6 billion years old.
WASP-28 is known to have 1 exoplanets in orbit around it.
WASP-28 b was discovered by the SuperWASP observatory, in 2015-01, using the transit method. Its semi-major axis is 0.04 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of WASP-28 b is 288.426 times the mass of Earth. The radius of WASP-28 b is 13.597 that of Earth. At more than 50 Earth masses, WASP-28 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.