Keywords: Orbit4.gif Two bodies with an extreme difference in mass orbiting around a common barycenter red cross with circular orbits Dwa ciała o bardzo dużej różnicy mas krążące wokół wspólnego barycentrum np Ziemia i Księżyc Own User Zhatt Zhatt 100px 100px 100px 100px Animations of Kepler motions Two-body problem Barycenter animations Animations on black background Animated GIF |