Prometheus is considered a “shepherding moon” because it constrains the inner edge of Saturn’s F ring. Prometheus orbits Saturn at a distance of about 87,000 miles and is known for its extremely irregular, visibly cratered surface.
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Prometheus is considered a “shepherding moon” because it constrains the inner edge of Saturn’s F ring. Prometheus orbits Saturn at a distance of about 87,000 miles and is known for its extremely irregular, visibly cratered surface.