tau Gem is a star with 2.3 times the mass of the Sun, and 26.8 times its radius. It is located 367.05 light years away from the solar system and is estimated to be 1.22 billion years old, as compared to the Sun which is roughly 4.6 billion years old.
tau Gem is known to have 1 exoplanets in orbit around it.
tau Gem b was discovered by the Lick Observatory observatory, in 2013-07, using the radial velocity method. Its semi-major axis is 1.17 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of tau Gem b is 6550.800 times the mass of Earth. The radius of tau Gem b is 12.100 that of Earth. At more than 50 Earth masses, tau Gem 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.