WASP-103 is a star with 1.22 times the mass of the Sun, and 1.44 times its radius. It is located 1225.20 light years away from the solar system and is estimated to be 4 billion years old, as compared to the Sun which is roughly 4.6 billion years old.
WASP-103 is known to have 1 exoplanets in orbit around it.
WASP-103 b was discovered by the SuperWASP observatory, in 2014-02, 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-103 b is 473.820 times the mass of Earth. The radius of WASP-103 b is 17.127 that of Earth. At more than 50 Earth masses, WASP-103 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.