The Ring-Moon Systems Node of NASA's Planetary Data System is devoted to archiving, cataloging, and distributing scientific data sets relevant to planetary rings and moons, and the ways they interact.

Planetary Data and Support

Search for data using OPUS (Outer Planets Unified Search)

  • Systems: Jupiter, Saturn, Uranus, Neptune, and Pluto.

  • Missions: Cassini, New Horizons, Voyager, Galileo, HST, and others.

  • Search Options: Surface geometry for moons, planets and rings, lighting geometry, resolution, and much more!


Browse our Data holdings using Viewmaster

  • See and preview every data set in our archive.
  • Drill down to individual products, complete with preview images, diagrams, indices, and documentation.
  • Links to download tar.gz archives of entire collections are never more than one click away.

Learn about how to use our data sets by following one of the “Missions and Data” links at left.


Expand Your Search if you are not finding what you need. Try the PDS-Wide Search Engine.


If you have a question, Ask Us.

Image Galleries

Explore the solar system by visiting our Image Galleries.

Help Us to Serve You Better
ROSES 2019 Proposal Support

Our Research Proposal Support pages provide information and links to data for ROSES 2019 programs relevant to the Planetary Ring-Moon Systems Node. They also provide links to support pages for ROSES calls for previous years.

Cassini Ring Radio Occultations

Updated January 17, 2019 to version 2 of the dataset.

  • Browse the dataset or download as a single tar.gz file.

  • Version 2: includes

    • reprocessed versions of the material contained in the earlier version,

    • all subsequent RSS occultations obtained prior to the loss of the Cassini UltraStable Oscillator (USO) in late 2011;

    • occultations in three wavelength bands, K, S, and X

    • 1 km and 10 km resolution diffraction corrected ring profiles;

    • higher resolution, calibrated, but diffraction-limited, optical depth and phase shift profiles of Saturn’s rings.