PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2010-03-15
   NOTE                 = "MESSENGER E-Kernel Information"
END_OBJECT              = TEXT

END

General Information About SPICE E-Kernels
=========================================

   The purpose of the Events (E) -kernel is to store different kinds of
   the spacecraft and science instrument events related information
   such as spacecraft and instrument commands, status parameters,
   records of spacecraft activities, ground events, and so on, and to
   systematize and provide access to this data in relational data base
   -like fashion.

   The means of an access to the EK data are provided via SPICE Toolkit
   APIs, calls to which can be integrated into user application
   programs. The information regarding how to obtain the SPICE system
   toolkit for a number of languages and computer platforms is located
   in the ``/software'' subdirectory of the main directory of this data
   set.

   To use E-kernels with INSPEKT program, a Leapseconds (LSK) is
   required.

   Refer to the ``ek.req'' and ``inspekt.ug'' documents provided with the
   toolkit to get more information on how to access E-kernel data.


MESSENGER E-kernels Provided in This Data Set
=============================================

   As the MESSENGER project did not produce any EK files, no EKs are
   included in this data set.


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

   Regarding MESSENGER project specific information provided in this
   data set:

      Mike Reid
      (240)-228-4537
      Mike.Reid@jhuapl.edu

   address:

      The Johns Hopkins University Applied Physics Laboratory
      11100 Johns Hopkins Road
      Laurel, MD 20723


   For general information about SPICE system:

      Charles H. Acton, Jr,
      (818)-354-3869,
      Charles.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 301-121
      4800 Oak Grove Drive
      Pasadena CA 91109 USA