HD 39855 is a star with 0.87 times the mass of the Sun, and NaN times its radius. It is located 75.86 light years away from the solar system.
HD 39855 is known to have 1 exoplanets in orbit around it.
HD 39855 b was discovered by the Las Campanas Observatory observatory, in 2019-06, using the radial velocity method. Its semi-major axis is 0.04 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of HD 39855 b is 8.503 times the mass of Earth. The radius of HD 39855 b is 2.850 that of Earth. At more than 10 Earth masses, HD 39855 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.