Dwarf World Hygiea in the asteroid belt also has no moon. Having said that, a number of smaller sized asteroids (also referred to as insignificant planets) do have moons, but They're all far too faint to see in any amateur telescope. Saturn has two ocean moons – Enceladus and Titan. https://kylerzeijg.blog4youth.com/35383052/the-single-best-strategy-to-use-for-moons