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Availability: Archived at NSSDC, accessible from elsewhere


This description was generated automatically using input from the Planetary Data System.

Data Set Overview ================= This shape model of Mimas is based on 668 Cassini Imaging Science Subsystem narrow angle camera (ISSNA) images taken in 2005-2009, and 17 Voyager 1 Imaging Science Subsystem Narrow (ISSN) camera images taken in 1980. The geometrical coordinate system of this model is defined by the planetary constants file cpck13Sep2010.tpc, available in PDS from the NAIF node. To find the file in PDS, go to the NAIF SPICE archive at In the table of data links, select the volume FTP link for the Cassini Orbiter mission. Within the volume, go to the data/pck directory, and download the desired file (cpck13Sep2010.tpc). The parameters of the model are as follows: Number of landmarks: 893 Formal position uncertainty: 130 m/component Number of images: 685 Pointing uncertainty: .007 mrad S/C position uncertainty: N/A Pointing residuals (relative to CK): 0.314 mrad range residuals: N/A number of measurement pairs: 97283 Number of measurements per landmark: 109 RMS LMK location residual: 297 m/componnent The models were originally prepared in the Implicitly Connected Quadrilateral (ICQ) format. Vertex-facet format versions, derived from the ICQ versions, are also provided. The filenames are and, where 512 is the value of Q (an indicator of the resolution). Files with three selections of lower resolution are also provided for each format, with similar filenames but lower values of q. The file '' is a list of the Cassini ISSNA and Voyager 1 ISSN images used to generate this model. A text file, 'icqmodel.asc' is provided in the 'document' directory which describes the ICQ format and the derivation of the vertex-facet versions.

These data are available on-line from the Planetary Data System (PDS) at:

Alternate Names



  • Planetary Science: Small Bodies

Additional Information



Questions and comments about this data collection can be directed to: Dr. Edwin V. Bell, II



NameRoleOriginal AffiliationE-mail
Dr. Carolyn C. PorcoData ProviderUniversity of
Dr. Carol NeeseGeneral ContactPlanetary Science
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