Solar System Generic Stations SPK files
===========================================================================

     This ``aareadme.txt'' file describes the contents of the
     kernels/spk/stations directory of the Solar System Generic SPICE
     data server.

     It was last modified on August 23rd, 2022 by Alfredo Escalante Lopez, ESAC/ESA.


Contact Information
--------------------------------------------------------
 
     If you have any questions regarding this directory or its
     contents, please contact the ESA SPICE Service at ESAC:

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

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


Brief Summary
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     This directory contains Solar System Generic SPICE SP-Kernel files
     including Ground Earth Stations locations.


Current SPK Kernels Set
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   earthstns_fx_YYMMDD.bsp

      SPICE SPK file containing ephemeris data for NASA DSN stations relative
      to the terrestrial reference frame label 'ITRF93'. This file was released
      the 14th of July 2005 by NAIF, JPL.


   earthstns_itrf93_YYMMDD.bsp

      SPICE SPK file containing ephemeris data for NASA DSN stations relative
      to the terrestrial reference frame label 'ITRF93'. This file was released
      the 14th of July 2005 by NAIF, JPL.


   estrack_vNN.bsp

      SPICE SPK file that defines the position for each of the ESA ESTRACK
      ground stations, as seen from the center of the Earth, in the
      topocentric frame defined in the corresponding ESTRACK FK. Created
      by the ESA SPICE Service (ESS).


   earthstns_ru_YYYYMMDD.bsp

      SPICE SPK file that contains the position for each of the Russian
      ground stations relative to the center of the Earth. Created by IKI.


   new_norcia.bsp

      SPICE SPK file that defines the position of the ESA New Norcia
      ground station, as seen from the center of the Earth, in the
      topocentric frame defined in the corresponding New Norcia FK.


   earthstns_jaxa_YYYYMMDD.tf

      SPICE SPK file that defines the position for each of the JAXA deep space
      ground stations, as seen from the center of the Earth, in the
      topocentric frame defined in the corresponding JAXA DSS FK. Created
      by the ESA SPICE Service (ESS).


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 binary SPK file 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.


End of aareadme file.