The Kepler-258 Exoplanetary System
Kepler-258 is a star with 0.8299999999999998 times the mass of the Sun, and 0.92 times its radius. It is located 1909.97 light years away from the solar system.
Kepler-258 is known to have 2 exoplanets in orbit around it.
Kepler-258 b was discovered by the Kepler observatory using the transit method. Its discovery was announced in 2014-03. Its semi-major axis is 0.10 astronomical units, as compared to Earth's which is 1 astronomical unit. It takes 13.20 Earth days to complete an orbit around its host star, Kepler-258.
The mass of Kepler-258 b is 27.74 times the mass of Earth. The radius of Kepler-258 b is 4.06 that of Earth. At more than 10 Earth masses, Kepler-258 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.