The diameter of Sycorax is estimated at 150 km ( assuming an albedo of 0.04 ) , making it the largest irregular satellite of Uranus , comparable in size with Puck and with Himalia , the biggest irregular satellite of Jupiter .
The diameter of Sycorax is estimated at 150 km ( assuming albedo of 0.04 ) making it the biggest non-spherical moon of Uranus , comparable in size with Himalia , the biggest non-spherical moon of Jupiter .