K2-137 is a star with 0.46 times the mass of the Sun, and 0.44 times its radius. It is located 322.49 light years away from the solar system.
K2-137 is known to have 1 exoplanets in orbit around it.
K2-137 b was discovered by the K2 observatory, in 2018-03, using the transit method. Its semi-major axis is 0.01 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of K2-137 b is 159.000 times the mass of Earth. The radius of K2-137 b is 0.890 that of Earth. At more than 50 Earth masses, K2-137 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.