Daphnis (moon)

Before it was photographed, the existence of a moon in Daphnis's position had already been inferred from gravitational ripples observed on the outer edge of the Keeler gap.

The discovery of Daphnis was announced by the Cassini Imaging Science Team Archived 2011-05-20 at the Wayback Machine on May 6, 2005.

[10] The discovery images were taken by the Cassini probe over 16 min on May 1, 2005, from a time-lapse sequence of 0.180 second narrow-angle-camera exposures of the outer edge of the A ring.

Both, particularly the inclination, are significantly greater than those of Pan (the larger moonlet which forms the Encke Gap).

The moon was discovered to be an irregularly-shaped object with a mostly smooth surface, a few craters, and an equatorial ridge.

Daphnis was resolved into a disc for the first time in this 2005 Cassini probe image. The gravitational ripples on the edges of the rings, which had earlier hinted at the moon's presence, are clearly visible. [ 9 ]
The waves that Daphnis induces nearby in the A ring have vertical relief (due to its orbital inclination ) and cast shadows when Saturn is close to its equinox .