HD 145457 is a star with 1.23 times the mass of the Sun, and 10.52 times its radius. It is located 441.26 light years away from the solar system.
HD 145457 is known to have 1 exoplanets in orbit around it.
HD 145457 b was discovered by the Subaru Telescope observatory, in 2010-08, using the radial velocity method. Its semi-major axis is 0.76 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of HD 145457 b is 709.140 times the mass of Earth. The radius of HD 145457 b is 13.300 that of Earth. At more than 50 Earth masses, HD 145457 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.