=============================================================================
MEX LSK Files
=============================================================================

  Last update:  08 AUG 2005       

  This "aareadme.txt" file describes the contents of the KERNELS/LSK
  directory.  It also provides the file naming conventions used for the
  MEX LSK kernels, and it provides identification of the most current
  version of LSK files.

  The LSK file is modified every time a new Leapsecond is announced by the
  International Earth Rotation Service (IERS).

  All LSK files (*.TLS) contained in this directory are unix text files. 
  These may be used in a non-compatible text environment by using the ASCII
  mode of FTP to port the file.  [Ref 2b]

  Contact Jose Luis Vazquez (jlvazquez@sciops.esa.int) or Joe Zender 
  (Joe.Zender@esa.int) if you have any questions.


=============================================================================
References
=============================================================================
    1. Time Required Reading. NAIF Document No. 225.07  17 Jan 2002

    2. Selected SPICE Tutorials from the NAIF server:  
ftp://naif.jpl.nasa.gov/pub/naif/toolkit_docs/Tutorials/office/individual_docs

       a) SCLK Tutorial               13_lsk_and_sclk.ppt
       b) Porting Kernels Tutorial    09_porting_kernels.ppt

  
=============================================================================
Mars Express LSK Directory Structure
=============================================================================
 aareadme.txt        Text file describing the directory structure, the naming
                     conventions for the LSKs, and the current version(s) of
                     each LSK type.

 former_versions     Subdirectory that contains obsolete versions of the 
                     LSK files that have been updated in the Current LSK
                     Kernels Set.

=============================================================================
MEX LSK Naming Covention                    NAIFxxxx.TLS
=============================================================================

       token        description
       ---------    -------------------------------------------------------
       xxxx         Version number. This is the standard naming convention
                    for generic leapseconds kernel files.

=============================================================================
Current LSK Kernels Set
=============================================================================

 Name                Comments
 ----------------    -------------------------------------------------------
 NAIF0008.TLS        File specifying the relationship between the Barycentric
                     Dynamical Time (TDB, also called Ephemeris Time, ET) and
                     Coordinated Universal Time (UTC) up to the last
                     modification in the Leapseconds: December 31, 2005.