PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2013-01-07 
   NOTE                 = "MGS PC-Kernel Information"
END_OBJECT              = TEXT
                                                                     
END 


General information about SPICE PC-kernels
==========================================

   In the SPICE system, the PC-kernels contain planetary attitude and
   body shape information. The PCK kernel includes orientation and
   shape information pertaining to extended solar system bodies such as
   the Sun, the planets, the natural satellites of the planets, comets,
   and asteroids. The most recent PC kernel file can always be obtained
   from NAIF/JPL.
   
   The purpose of the PCK kernels and associated software is to provide
   SPICE users with a convenient mechanism for supplying planetary
   physical constants to application programs. SPICE's PCK software is
   able to read files conforming to the PCK format and return to a
   calling application program both the data contained in such files
   and a small number of commonly used numeric quantities derived from
   the kernel data. The SPICE system toolkit for a number of computer
   platforms or information regarding how it can be obtained is located
   in the "/software" subdirectory of the main directory of this
   data set.
   
   Refer to the "pck.req" document provided with the toolkit or
   available from the NAIF Node of PDS if SPICE toolkit is not included
   with this data set to get more information on how to access
   PC-kernel data.


MGS PC-kernel contained on this volume
======================================

   The following PC-Kernel files are provided on this volume
   
           pck00006.tpc          generic SPICE PCK file distributed by
                                 NAIF/JPL during mission operations. This 
                                 file is based on the 1994 IAU constants.

           mars_iau2000_v0.tpc   PcK file containing only Mars and Martian 
                                 satellite constants from 2000 IAU report.

           pck00009.tpc          Generic SPICE PCK file containing 
                                 constants from the IAU 2006 report.
                                 This PCK file contains the same constants 
                                 for Mars and Martian satellites as the PCK 
                                 file mars_iau2000_v0.tpc.


Kernel File Details
===================

   The most detailed description of the data in a text PCK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
   
   The most detailed description of the data in a binary PCK file is
   provided in metadata included inside the comment area of the file.
   This information can be viewed using utility programs COMMNT and
   SPACIT included into the NAIF Toolkit.


Contact Information
===================

   Regarding MGS project specific information provided in this data set
   and for general information about SPICE system:
   
      Charles H. Acton, Jr, 
      (818)-354-3869, 
      Chuck.Acton@jpl.nasa.gov, 
      
   or 
   
      Boris Semenov 
      (818)-354-8136 
      Boris.Semenov@jpl.nasa.gov
      
   address:
   
      Navigation and Ancillary Information Facility (NAIF)
      Jet Propulsion Laboratory
      MS 301-125L
      4800 Oak Grove Drive
      Pasadena CA 91109 USA