Solar Orbiter PCK files
===========================================================================

   This ``aareadme.txt'' file describes the contents of the kernels/pck
   directory of the Solar Orbiter SPICE Kernel Dataset.

   It was last modified on February 23, 2023 by Ricardo Valles, ESAC/ESA.


Brief Summary
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   This directory contains generic and mission-specific SPICE Planetary
   Constants Kernel files for the Solar Orbiter mission. The data in these
   kernels correspond to the best knowledge of the orientation, size and
   shape of the Sun and the Earth.


File naming conventions
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   Naming Scheme for Generic PCKs

      The naming scheme for generic PCKs is:

            pckNNNNN.tpc

      where

            NNNNN    version number (required)(e.g. 00010);

                     If multiple versions of a generic PCK Kernel file are
                     provided, always use the latest version (unless an
                     earlier version is needed for some special reasons.)


      The naming scheme for generic PCK containing masses for Solar System
      bodies is:

            de-NNN-masses.tpc

      where

            NNNN     planetary ephemeris version number (required)(e.g. 403);

                     If multiple versions of a generic PCK Kernel file are
                     provided, always use the latest version (unless an
                     earlier version is needed for some special reasons.)


   Naming Scheme for Earth high-precision PCKs

      The naming scheme for the Earth high-precision PCKs is:

            earth_SDAT_EDAT_PDAT.bpc

      where

            SDAT     is the file's coverage start time in YYMMDD format;

            EDAT     is the file's coverage end time in YYMMDD format;

            PDAT     is the date from which the information contained
                     in the file corresponds to predicted data. Any data
                     prior to this date corresponds to actual measurements.


Current PCK Kernels Set
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   pck00010.tpc

      SPICE text PCK file containing constants from the IAU 2009 report,
      created by NAIF, JPL.


   de-403-masses.tpc

      SPICE text PCK file containing the masses for the sun, planets,
      satellites and planetary barycenters. These masses are given as
      ratios to of Solar GM to barycenter GM. Created by Bill Taber.


   earth_000101_190812_190521.bpc

      SPICE binary PCK file containing the orientation of the Earth as a
      function of time for the given interval with reconstructed and
      predicted. Created by NAIF, JPL.


Other directory contents
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   aareadme.txt         This file.


Particulars
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   Nothing to report.


Kernel File Details
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   The most detailed description of the data in a text PCK file is
   provided in metadata included inside the descriptive text areas
   of the file. This information can be viewed using any text
   editor.

   For binary PCK files, this description is provided in metadata
   included inside the comment area of the file. This information
   can be viewed using the utility programs COMMNT and SPACIT
   included in the NAIF Toolkit.


Contact Information
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   If you have any questions regarding this file contact the
   ESA SPICE Service (ESS) at ESAC:

           Alfredo Escalante Lopez
           (+34) 91-8131-429
           spice@sciops.esa.int

   or the Solar Orbiter Science Operations Center at ESAC:

           sol_soc@esa.int


References and required readings
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   1. ``PCK Required Reading'', NAIF

   2. ``NAIF Integer ID Codes Required Reading,'' NAIF


End of aareadme file.