Daphnis, 8 kilometers across, occupies an inclined orbit within the 42-kilometer-wide Keeler Gap in Saturn's outer A ring.
Recent analysis by imaging scientists published in the Astronomical Journal illustrates how the moon's gravitational pull perturbs the orbits of the particles forming the gap's edge and sculpts the edge into waves having both horizontal and vertical components.
Daphnis itself can be seen casting a shadow onto the nearby ring.
June 25, 2009 5:00 AM PDT
Photo by: NASA/JPL/Space Science Institute
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