PIA09834: Gravity of the Situation
 Target Name:  S Rings
 Is a satellite of:  Saturn
 Mission:  Cassini-Huygens
 Spacecraft:  Cassini Orbiter
 Instrument:  ISS - Narrow Angle
 Product Size:  756 x 856 pixels (w x h)
 Produced By:  Cassini Imaging Team
 Primary Data Set:  Cassini
 Full-Res TIFF:  PIA09834.tif (648.1 kB)
 Full-Res JPEG:  PIA09834.jpg (25.6 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Two dark gores in Saturn's F ring demonstrate the gravitational influence of the shepherd moon Prometheus.

The older gore at the top of this view is at a steeper angle than the newer addition just above and to the left of Prometheus, since the former has sheared out over the course of an orbit: particles on the inner (right) side of the F ring travel faster in the same amount of time than the particles on the outer (left) side, leaving the outer particles behind.

Prometheus (102 kilometers, or 63 miles across) is lit at left by direct sunlight and at right by reflected light from Saturn. The bright, sunlit portion of the moon is overexposed.

Two background stars are captured above Prometheus in this view, which looks toward the unilluminated side of the rings from about 33 degrees above the ringplane.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 1, 2008. The view was acquired at a distance of approximately 1.5 million kilometers (956,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 62 degrees. Image scale is 9 kilometers (6 miles) per pixel.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov/home/index.cfm. The Cassini imaging team homepage is at http://ciclops.org.

Image Credit:
NASA/JPL/Space Science Institute

Image Addition Date: