Loading

Bull-eye Moons

NASA/JPL-Caltech/Space Science Institute2015-12-14

NASA

NASA
Washington, DC, United States

Like a cosmic bull's-eye, Enceladus and Tethys line up almost perfectly for Cassini's cameras.

Since the two moons are not only aligned, but also at relatively similar distances from Cassini, the apparent sizes in this image are a good approximation of the relative sizes of Enceladus (313 miles or 504 kilometers across) and Tethys (660 miles or 1,062 kilometers across).

This view looks toward the unilluminated side of the rings from 0.34 degrees below the ring plane. The image was taken in red light with the Cassini spacecraft narrow-angle camera on Sept. 24, 2015.

The image was obtained at a distance of approximately 1.3 million miles (2.1 million kilometers) from Enceladus. Image scale on Enceladus is 7 miles (12 kilometers) per pixel. Tethys was at a distance of 1.6 million miles (2.6 million kilometers) with a pixel scale of 10 miles (16 kilometers) per pixel.

http://photojournal.jpl.nasa.gov/catalog/PIA18349

Show lessRead more
  • Title: Bull-eye Moons
  • Creator: NASA/JPL-Caltech/Space Science Institute
  • Date Created: 2015-12-14
  • Rights: JPL

Recommended

Home
Explore
Nearby
Profile