Moons are classed into two different groups In accordance with their orbits: standard moons, that have prograde orbits (they orbit from the course in their planets' rotation) and lie near to the aircraft in their equators, and irregular moons, whose orbits is often pro- or retrograde (against the course in https://bestmoons05936.tkzblog.com/34515086/bestmoons-no-further-a-mystery