GJ 163 is a star with 0.4 times the mass of the Sun, and 0.41 times its radius. It is located 49.34 light years away from the solar system and is estimated to be 6 billion years old, as compared to the Sun which is roughly 4.6 billion years old.
GJ 163 is known to have 3 exoplanets in orbit around it.
GJ 163 b was discovered by the La Silla Observatory observatory, in 2013-08, using the radial velocity method. Its semi-major axis is 0.06 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of GJ 163 b is 10.605 times the mass of Earth. The radius of GJ 163 b is 3.250 that of Earth. At more than 10 Earth masses, GJ 163 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.
GJ 163 c was discovered by the La Silla Observatory observatory, in 2013-08, using the radial velocity method. Its semi-major axis is 0.13 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of GJ 163 c is 6.805 times the mass of Earth. The radius of GJ 163 c is 2.500 that of Earth. At more than 10 Earth masses, GJ 163 c 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.
GJ 163 d was discovered by the La Silla Observatory observatory, in 2013-08, using the radial velocity method. Its semi-major axis is 1.03 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of GJ 163 d is 29.415 times the mass of Earth. The radius of GJ 163 d is 5.920 that of Earth. At more than 10 Earth masses, GJ 163 d 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.