Saturn’s Moon Pan Saturn’s moon Pan — Pan, the innermost known
satellite, was found from photographs taken by Voyager during
its encounter with Saturn. It was discovered by Mark R.
Showalter in 1990, 9 years after the Voyager encounter. Pan is
located 133,583 kilometers from the center of Saturn and is
within the Encke Gap of Saturn’s A-ring. It acts as a shepherd
and is responsible for keeping the Encke gap open. It has a
diameter of 20 kilometers. Discovered by: Mark R. Showalter;
Voyager 2 Date of Discovery: 1990 Distance from Saturn: 133,583
km Radius: 10 km Orbital Period: 0.5750 days