The K2-8 Exoplanetary System
K2-8 is a star with 0.78 times the mass of the Sun, and 0.74 times its radius. It is located 1330.49 light years away from the solar system.
K2-8 is known to have 2 exoplanets in orbit around it.
K2-8 b was discovered by the K2 observatory using the transit method. Its discovery was announced in 2015-03. Its semi-major axis is 0.09 astronomical units, as compared to Earth's which is 1 astronomical unit. It takes 10.35 Earth days to complete an orbit around its host star, K2-8.
The mass of K2-8 b is 20.48 times the mass of Earth. The radius of K2-8 b is 3.58 that of Earth. At more than 10 Earth masses, K2-8 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.