PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2009-10-01
   NOTE                 = "SP-Kernel Information"
END_OBJECT              = TEXT
                                                                     
END 

General information about SPICE SP-kernels
==========================================

   The purpose of the SP-kernel -- which stands for S(pacecraft) and
   P(lanet) Kernel -- is to allow ephemerides for any collection of
   solar system bodies, spacecraft or any other objects in 3D space
   to be combined under a common file format, and accessed by a common
   set of subroutines.
   
   The SPK format is supported by a collection of subroutines that
   are part of the SPICELIB library, the major component of the NAIF
   Toolkit. These subroutines can be integrated into user application
   programs. 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 dataset. 
   
   To use SP-kernels, a Leapseconds (LSK) is required.  Also, to use
   SP-Kernels containing positions given relative to the non-inertial
   and project-defined frames, a Frame Definitions (FRAMES) and
   Planetary Constants (PcK) files are required.
   
   Refer to the SPK.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 SP-kernel data.


Odyssey (M01) SP-kernels provided in this directory 
===================================================

   This directory contains the SPICE SP-Kernel files for the Odyssey
   mission. All files are in IEEE binary format and suitable for ftp
   binary transfer to use on UNIX workstations and MACs. The following
   files are present in this directory. (Only file names are shown; the
   file name extensions of the binary SPK files are always ".bsp"):

   Spacecraft Trajectory SPK files:

         m01_PPPPPP             Final merged spacecraft trajectory SPKs
                                for cruise, aerobraking, mapping and
                                extended phases of the mission. These
                                files were made by merging
                                reconstructed OD SPK files produced by
                                Odyssey NAV. The letters ``PPPPPP''
                                indicate the mission phase or the
                                portion of the mission phase covered by
                                the file and map to the actual coverage
                                dates as follows:

                                Part of Map   Start UTC    Stop UTC
                                -----------   ----------   ----------
                                cru           2001-04-07   2001-10-23
                                ab            2001-10-24   2002-02-18
                                map1          2002-02-19   2002-03-31 (1)
                                map2          2002-04-01   2002-06-30
                                map3          2002-07-01   2002-09-30
                                map4          2002-10-01   2002-12-31
                                map5          2003-01-01   2003-03-31
                                map6          2003-04-01   2003-06-30
                                map7          2003-07-01   2003-09-30
                                map8          2003-10-01   2003-12-31
                                map9          2004-01-01   2004-03-31
                                map10         2004-04-01   2004-06-30
                                map11         2004-07-01   2004-09-30 (2)
                                ext1          2004-10-01   2004-12-31 (2)
                                ext2          2005-01-01   2005-03-31
                                ext3          2005-04-01   2005-06-30
                                ext4          2005-07-01   2005-09-30
                                ext5          2005-10-01   2005-12-31
                                ext6          2006-01-01   2006-03-31
                                ext7          2006-04-01   2006-06-30
                                ext8          2006-07-01   2006-09-30
                                ext9          2006-10-01   2006-12-31
                                ext10         2007-01-01   2007-03-31
                                ext11         2007-04-01   2007-06-30
                                ext12         2007-07-01   2007-09-30
                                ext13         2007-10-01   2007-12-31
                                ext14         2008-01-01   2008-03-31
                                ext15         2008-04-01   2008-06-30
                                ext16         2008-07-01   2008-09-30
                                ext17         2008-10-01   2008-12-31
                                ext18         2009-01-01   2009-03-30

                                (1) the ``map1'' file is shorter than
                                three months to align the file coverage
                                boundaries with the project-wide
                                archive period cut-off dates.
 
                                (2) although the extended mission
                                started in August 2004, ``map11'' file
                                goes through the end of September and
                                ``ext1'' file starts on October 1 to
                                keep the file coverage begins/ends at
                                three month boundaries.
 
                                Note that ``m01_map1'' released in June
                                2002 and covering through 2002-05-31
                                has been replaced with two files
                                containing exactly same data --
                                ``m01_map1_v2'' covering through
                                2002-03-31 and ``m01_map2'' covering
                                from 2002-04-01. This was done to align
                                the file coverage boundaries with the
                                project-wide archive period cut-off
                                dates, as requested by the project's
                                DAWG.

         m01_PPPPPP_ipng_mgs95j trajectory SPK files for mapping and
                                extended phases of the mission created
                                by Alex Konopliv of the SSD group
                                (formerly of the IPNG group), JPL,
                                using the Mars gravity model MGS95J.
                                The letters ``PPPPPP'' indicate the
                                mission phase or the portion of the
                                mission phase as specified above

   Odyssey spacecraft structures SPK file:
 
         m01_struct_v10         SPK file containing relative locations
                                of Odyssey solar array and HGA
                                structures.

   Solar System Bodies Ephemeris data SPK file:
   
         de405s                 SPK file containing JPL's Planetary
                                Ephemerides (DE) 405.

   Satellite Ephemeris data SPK files:
   
         mar033_5               This file contains ephemerides for the
                                Martian satellites Phobos and Diemos,
                                and for the Sun, Earth, Moon and Mars.

         mar033_7               The same version of ephemerides for the
                                Martian satellites but with slightly
                                longer coverage.

         mar063                 This file contains version MAR063 
                                ephemerides for the Martian satellites 
                                Phobos and Diemos, and for the Sun, 
                                Earth, Moon and Mars. This file supersedes
                                the mar033* files.


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

   The most detailed description of the data in each SPK 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 Odyssey 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 

