HD 221420 is a star with 1.67 times the mass of the Sun, and NaN times its radius. It is located 101.57 light years away from the solar system.
HD 221420 is known to have 1 exoplanets in orbit around it.
HD 221420 b was discovered by the Anglo-Australian Telescope observatory, in 2019-06, using the radial velocity method. Its semi-major axis is 18.50 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of HD 221420 b is 3084.600 times the mass of Earth. The radius of HD 221420 b is 12.500 that of Earth. At more than 50 Earth masses, HD 221420 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.