PIA07621: Tethys Meets Dione

Tethys Meets Dione


This image shows Saturn's moon Tethys partially occulting the moon Dione. The difference in the surface brightness of the two moons is immediately apparent.

The diameter of Tethys is 1,071 kilometers (665 miles), while Dione is 1,126 kilometers (700 miles) across.

This still image was acquired on Sept. 16, 2005, at a distance of 2.1 million kilometers (1.3 million miles) from Dione and 2.7 million kilometers (1.7 million miles) from Tethys. Resolution in the original images was 13 kilometers (8 miles) per pixel on Dione and 16 kilometers (10 miles) per pixel on Tethys. The still image was magnified by a factor of two to aid visibility of surface features.

A brief movie of is also available (see PIA07620 ).

Cataloging Keywords:

Name Value Additional Values
Target Tethys Dione
System Saturn
Target Type Satellite
Mission Cassini-Huygens
Instrument Host Cassini Orbiter
Host Type Orbiter
Instrument Imaging Science Subsystem (ISS)
Extra Keywords Grayscale
Acquisition Date
Release Date 2005-11-01
Date in Caption
Image Credit NASA/JPL/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA07621
Identifier PIA07621