HD 200964 is a star with 1.39 times the mass of the Sun, and 4.92 times its radius. It is located 236.76 light years away from the solar system and is estimated to be 3 billion years old, as compared to the Sun which is roughly 4.6 billion years old.
HD 200964 is known to have 2 exoplanets in orbit around it.
HD 200964 b was discovered by the Lick Observatory observatory, in 2011-01, using the radial velocity method. Its semi-major axis is 1.56 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of HD 200964 b is 508.482 times the mass of Earth. The radius of HD 200964 b is 13.500 that of Earth. At more than 50 Earth masses, HD 200964 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn in our solar system.
HD 200964 c was discovered by the Lick Observatory observatory, in 2011-01, using the radial velocity method. Its semi-major axis is 1.96 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of HD 200964 c is 386.052 times the mass of Earth. The radius of HD 200964 c is 13.700 that of Earth. At more than 50 Earth masses, HD 200964 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn in our solar system.