PIA12515: Reappearing Rhea

Reappearing Rhea


Rhea emerges after being occulted by the larger moon Titan.

Mutual event observations such as this one, in which one moon passes close to or in front of another, help scientists refine their understanding of the orbits of Saturn's moons. Titan is about 1 million kilometers (621,000 miles) from Cassini in this image. Rhea is about 2.3 million kilometers (1.4 million miles) from Cassini.

The high altitude detached haze layer of Titan's atmosphere is clearly visible in the image. See PIA07774 to learn more.

Lit terrain seen here is on the trailing hemispheres of Titan (5,150 kilometers, or 3,200 miles across) and Rhea (1,528 kilometers, or 949 miles across). The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 27, 2009. Image scale is 6 kilometers (4 miles) per pixel on Titan and 14 kilometers (9 miles) per pixel on Rhea.

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 Rhea Titan
System Saturn
Target Type Satellite
Mission Cassini-Huygens
Instrument Host Cassini Orbiter
Host Type Orbiter
Instrument Imaging Science Subsystem (ISS)
Detector Narrow Angle Camera
Extra Keywords Atmosphere, Grayscale, Haze, Visual
Acquisition Date
Release Date 2009-12-29
Date in Caption 2009-10-27
Image Credit NASA/JPL/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA12515
Identifier PIA12515