Saturn’s F ring is shepherded in part by the moon Pandora.
Pandora orbits just outside the F ring, while the moon Prometheus travels just inside it. Their gravitational effects help confine and shape the ring, which is unusually narrow and dynamically active. The pair are therefore called shepherd satellites, an astronomical term for moons whose gravity influences the edges or structure of a ring.
The F ring is one of Saturn’s outer main rings and lies beyond the brighter A ring. It contains strands, kinks, and clumps that can change as the ring particles interact with Prometheus and Pandora. Spacecraft observations have shown that its appearance is more complicated than a simple smooth band.
Pandora does not shepherd every ring around Saturn. The A, B, and C rings are separate structures with different particles, boundaries, and interacting moons. The precise answer is the F ring, named with a letter rather than a mythological title.