Orbiting circles
(these two have been based on this sketch which in turn has been my attempt to figure out and recreate this one ; note that each white dot remains on its own circle the whole time; code here)

Orbiting circles

(these two have been based on this sketch which in turn has been my attempt to figure out and recreate¬†this one ; note that each white dot remains on its own circle the whole time;¬†code here)