============================================================================= SMART-1 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 SMART-1 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 Jorge Diaz del Rio (jdiaz@rssd.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 ============================================================================= SMART-1 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. ============================================================================= SMART-1 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.