K2-289 is a star with 0.95 times the mass of the Sun, and 1.02 times its radius. It is located 894.65 light years away from the solar system.
K2-289 is known to have 1 exoplanets in orbit around it.
K2-289 b was discovered by the K2 observatory, in 2019-03, using the transit method. Its semi-major axis is 0.11 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of K2-289 b is 61.056 times the mass of Earth. The radius of K2-289 b is 9.100 that of Earth. At more than 50 Earth masses, K2-289 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.