Dwarf Earth Hygiea during the asteroid belt also has no moon. Having said that, numerous smaller asteroids (also called small planets) do have moons, but They may be all far too faint to determine in any newbie telescope. Iapetus has been called the yin and yang on the Saturn moons https://moons34947.blogacep.com/40006098/new-step-by-step-map-for-moons