Prometheus

Prometheus was discovered in 1980 through Voyager 1 spacecraft images and named after the intelligent Titan of Greek mythology. With dimensions of approximately 148 kilometers in its longest direction, Prometheus displays an irregular shape and is likely composed of water ice. Positioned just interior to Saturn's F Ring, its eccentric orbit is intricately linked to the ring's dynamics. Operating as a "shepherd moon," Prometheus exerts gravitational influences on the F Ring, sculpting its structure and creating distinctive features like "streamer-channels." This moon's interactions with the F Ring, including its complex gravitational interplay, have been significantly revealed through observations made by the Cassini spacecraft during its mission.