Circle and Ellipse

It is unclear whether or not Aristotle is aware that a Circle is a special case of an Ellipse, i. e. is a closed regular plane figure of precisely one focus.  If he were, he might consider that divine, because perfect, motion might be Elliptical, and not merely Circular.  He might also recognize the deficiency of presumably self-sufficient Contemplation--that it lacks the companionship that obtains in more comprehensive enclosed contexts, e. g. Friendship, which is constituted by two foci.