Dwarf Earth Hygiea in the asteroid belt also has no moon. On the other hand, many more compact asteroids (also referred to as minimal planets) do have moons, but They're all also faint to check out in almost any beginner telescope. Saturn has two ocean moons – Enceladus and Titan. https://bestmoons91368.blogrelation.com/41013805/5-tips-about-bestmoons-you-can-use-today