Dwarf planet Hygiea inside the asteroid belt also has no moon. However, several scaled-down asteroids (also known as insignificant planets) do have moons, but They're all also faint to check out in any amateur telescope. Graphs are unavailable as a result of specialized concerns. Updates on reimplementing the Graph extension, https://simonzfffd.alltdesign.com/5-essential-elements-for-best-moons-53791944