HD 31253 is a star with 1.7 times the mass of the Sun, and 1.75 times its radius. It is located 189.64 light years away from the solar system and is estimated to be 3 billion years old, as compared to the Sun which is roughly 4.6 billion years old.
HD 31253 is known to have 1 exoplanets in orbit around it.
HD 31253 b was discovered by the W. M. Keck Observatory observatory, in 2011-02, using the radial velocity method. Its semi-major axis is 1.26 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of HD 31253 b is 197.160 times the mass of Earth. The radius of HD 31253 b is 14.100 that of Earth. At more than 50 Earth masses, HD 31253 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.