GJ 720 A is a star with 0.57 times the mass of the Sun, and 0.56 times its radius. It is located 50.74 light years away from the solar system.
GJ 720 A is known to have 1 exoplanets in orbit around it.
GJ 720 A b was discovered by the Roque de los Muchachos Observatory observatory, in 2021-05, using the radial velocity method. Its semi-major axis is 0.12 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of GJ 720 A b is 13.649 times the mass of Earth. The radius of GJ 720 A b is 3.770 that of Earth. At more than 10 Earth masses, GJ 720 A b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune in our solar system.