PIA12717: Trio of Small Moons

Trio of Small Moons


The F ring's shepherds, Prometheus and Pandora, join Epimetheus in this image of three of Saturn's moons and the rings.

Prometheus (86 kilometers, or 53 miles across) can be seen orbiting inside the thin F ring near the middle of the image. Pandora (81 kilometers, or 50 miles across) orbits outside the F ring to the left of Prometheus. Epimetheus (113 kilometers, or 70 miles across) orbits beyond the F ring near the bottom of the image.

See PIA07653 to learn more about how Prometheus and Pandora "shepherd" the F ring.

This view looks toward the southern, unilluminated side of the rings from about 2 degrees below the ringplane. Several background stars are visible.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 2, 2010. The view was acquired at a distance of approximately 2.5 million kilometers (1.6 million miles) from Prometheus and Pandora. The view was acquired at a distance of approximately 2.6 million kilometers (1.6 million miles) from Epimetheus. Image scale is 15 kilometers (9 miles) per pixel on Prometheus and Pandora. Image scale is 16 kilometers (10 miles) per pixel on Epimetheus.

Background Info:

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/ . The Cassini imaging team homepage is at http://ciclops.org .

Cataloging Keywords:

Name Value Additional Values
Target Saturn Rings Epimetheus, F Ring, Pandora, Prometheus, Saturn
System Saturn
Target Type Ring Planet, Satellite
Mission Cassini-Huygens
Instrument Host Cassini Orbiter
Host Type Orbiter
Instrument Imaging Science Subsystem (ISS)
Detector Narrow Angle Camera
Extra Keywords Grayscale
Acquisition Date
Release Date 2010-09-09
Date in Caption 2010-08-02
Image Credit NASA/JPL/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA12717
Identifier PIA12717