55 Cancri f (abbreviated 55 Cnc f and also referred to as Rho1 Cancri f) is an extrasolar planet approximately 41 light-years away from Earth in the constellation of Cancer (the Crab). 55 Cancri f is the fourth known planet (in order of distance) from the star 55 Cancri and the first planet to have been given the designation of "f".
Read more about 55 Cancri F: Discovery, Orbit and Mass, Characteristics