The Ring-Moon Systems Node of NASA's Planetary Data System is devoted to archiving, cataloging, and distributing scientific data sets relevant to planetary ring systems.

OPUS Data Search

OPUS - Our Data Search Tool

  • The OPUS API can be accessed directly. See instructions in the OPUS API Guide.

  • Supports surface searches for the planet, satellites and rings (e.g., latitudes & longitudes).

  • Uses comprehensive target lists for Cassini ISS & VIMS.

  • Provides numerous viewing, illumination, spacecraft and instrument constraints.

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Enhanced Cassini Support

Visit our Enhanced Cassini Support page for links to:

  • downloadable tables of enhanced geometric metadata,

  • preview products and the keys to their interpretation,

  • calibrated ISS images for the Jupiter & Saturn encounters,

  • new or updated data user’s guides - CIRS, ISS, RSS, & UVIS,

  • PDS’s consolidated Cassini Archive Page.

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Our generic Ephemeris Tools now work for any year between 1601 and 2599.
Galileo and Moon Tracker

Click the image (pdf) to see Galileo's observations from January 21 & 22, 1610 and the results from the Moon Tracker and Planet Viewer.

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ROSES 2017 Proposal Support
  • Our Research Proposal Support pages provide information and links to data for ROSES 2017 programs relevant to the Planetary Ring-Moon Systems Node. They also provide links to support pages for ROSES calls for previous years.
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Ephemeris Tool Updates
  • New, March 2017, the generic Ephemeris Tools have been updated to support any year between 1601 and 2599

  • The Pluto Viewer and Pluto Ephemeris Generator tools are now available.

  • The Cassini ephemeris now in use is the final selection for the remainder of the Saturn tour.
  • The small moon S/2004 N 1 is now available in all the Neptune tools.
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