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Pan is a small moon of Saturn that orbits within the planet's ring system. It is notable for its unusual shape and its role in sculpting Saturn's rings through its gravitational influence.
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Pan is the innermost named moon of Saturn. It is approximately 35 kilometres (22 mi) across and 23 km (14 mi) wide and orbits within the Encke Gap in Saturn's A Ring. Pan is a ring shepherd and is responsible for keeping the Encke Gap free of ring particles. It is sometimes described as having the appearance of a walnut, or ravioli.
Pan was discovered by Mark R. Showalter in 1990 from analysis of old Voyager 2 probe photos and received the provisional designation S/1981 S 13 because the discovery images dated back to 1981.