=============================================================================   
ROSETTA LSK Files                                                               
=============================================================================   
                                                                                
  This "aareadme.txt" file describes the contents of the KERNELS/LSK            
  directory. It also provides the file naming conventions used for the          
  ROSETTA 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 Marc Costa Sitja (mcosta@sciops.esa.int) or the ESA SPICE Service 
  (esa_spice@sciops.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                    
                                                                                
                                                                                
=============================================================================   
Rosetta 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.                                               

                                                                                
=============================================================================   
Rosetta 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                                                  
 -----------------    -----------------------------------------------------     
 NAIFvvvv.TLS         File specifying the relationship between the Barycentric  
                      Dynamical Time (TDB, also called Ephemeris Time, ET) and  
                      Coordinated Universal Time (UTC).                         
                                                                                
                                                                                
-------------------                                                             
                                                                                
        This file was last modified on Dec. 20, 2016 (M. Costa)


End of aareadme file.