The KOI-55 Exoplanetary System
KOI-55 is a star with 0.5 times the mass of the Sun, and 0.2 times its radius. It is located 3848.64 light years away from the solar system.
KOI-55 is known to have 2 exoplanets in orbit around it.
KOI-55 b was discovered by the Kepler observatory using the orbital brightness modulation method. Its discovery was announced in 2011-12. Its semi-major axis is 0.01 astronomical units, as compared to Earth's which is 1 astronomical unit. It takes 0.24 Earth days to complete an orbit around its host star, KOI-55.
The mass of KOI-55 b is 0.44 times the mass of Earth. The radius of KOI-55 b is 0.759 that of Earth. At less than 1.5 Earth masses, KOI-55 b is a regular terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.