Keywords: Orbit2.gif Two bodies with a slight difference in mass orbiting around a common barycenter red cross with circular orbits Dwa ciała o zbliżonych masach krążące wokół wspólnego barycentrum np Pluton i Charon Own User Zhatt Zhatt 100px 100px 100px 100px Animations of Kepler motions Two-body problem Barycenter animations Animations on black background Animated GIF |