CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Moons of Interest

Moons of Interest
PIA 08207

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  Wrinkled and cracked Enceladus hangs in the distance as the pitted ring moon Janus rounds the outer edge of the F ring.

Enceladus (504 kilometers, 313 miles across) is remarkable for its actively venting south polar region, while Janus (179 kilometers, 111 miles across) is known for its orbital swap with the moon Epimetheus.

The bright core of the F ring is perhaps 50 kilometers wide and contains numerous clumps and kinks. Dimmer, flanking ringlets on either side of the core wind into a tight spiral structure, discovered in Cassini images.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 21, 2006 at a distance of approximately 565,000 kilometers (351,000 miles) from Janus, 702,000 kilometers (436,000 miles) from Enceladus and 530,000 kilometers (329,000 miles) from Saturn. Image scale is 3 kilometers (2 miles) per pixel on Janus and 4 kilometers (2 miles) per pixel on Enceladus.

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 Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission, visit and the Cassini imaging team home page,

Credit: NASA/JPL/Space Science Institute
Released: June 26, 2006 (PIA 08207)
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