S/2004 S 6 is the designation of a dusty object seen orbiting Saturn very close to the F ring.

It has been suggested that a spiral structure in the thinnest material around the F ring may have been a result of this.

It discovered a new, thin ring called the F ring.

The moon acts as a shepherd satellite for the inner part of Saturn's F ring.

It has been suggested that a spiral structure in the tenuous material surrounding the F ring may have been a consequence of this.

It is the outer shepherd satellite of Saturn's F ring, the inner satellite being Prometheus.

The first set of pictures show a set of "clumps" moving along the "F" ring.

These are no ordinary moons, but their gravitational effects on the "F" ring led scientists to call them "shepherd moons".

It discovers the planet's F ring and determines that its moon Titan has a thick atmosphere.

Since Prometheus orbits Saturn more rapidly than the material in the F ring, each new channel is carved about 3.2 degrees in front of the previous one.