Epimetheus — moon orbiting Saturn, shown live in Cosmoscope, a real-time 3D map of the universe.
Half of the solar system’s only co-orbital pair: every four years Epimetheus and Janus close in on each other and trade orbits instead of colliding.
Cosmoscope puts Epimetheus at its true position in the solar system, computed from JPL-derived ephemeris and updated continuously. Open the live 3D view to see, in real time, how far Epimetheus is from the Sun and from Earth right now, how many minutes or hours light takes to cross that gap, and how fast it is moving along its orbit. Scrub the timeline to place Epimetheus where it was on any past date, or where it will be years from now.