The Kepler-222 Exoplanetary System
Kepler-222 is a star with 0.765 times the mass of the Sun, and 0.87 times its radius. It is located 2529.70 light years away from the solar system.
Kepler-222 is known to have 3 exoplanets in orbit around it.
Kepler-222 b was discovered by the Kepler observatory using the transit method. Its discovery was announced in 2014-03. Its semi-major axis is 0.05 astronomical units, as compared to Earth's which is 1 astronomical unit. It takes 3.94 Earth days to complete an orbit around its host star, Kepler-222.
The mass of Kepler-222 b is 15.23 times the mass of Earth. The radius of Kepler-222 b is 3.16 that of Earth. At more than 10 Earth masses, Kepler-222 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.