PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2002-11-01 NOTE = "MGS LS-Kernel Information" END_OBJECT = TEXT END General information about SPICE LS-kernels ========================================== In the SPICE system, Leapsecond (or LS) -kernel contains the leapseconds and the values of physical constants required to perform a transformation between Universal Time Coordinated (UTC) and Ephemeris time (ET). Leapseconds usually occur at the New Year or the end of June. The user should check with NAIF/JPL regularly to keep up to date about leapseconds. The information in LSK file can be manipulated by a collection of FORTRAN 77 subroutines that part of the SPICELIB library or C functions that are part of the CSPICE library to provide required time system transformation. These subroutines/functions can be integrated into user application programs. The SPICE system toolkit for a number of computer platforms or information regarding how it can be obtained is located in the "/software" subdirectory of the main directory of this data set. Refer to the "time.req" document provided with the toolkit or available from the NAIF Node of PDS if SPICE toolkit is not included with this data set to get more information about time conversions supported within the SPICE system. MGS LS-kernels contained on this volume ======================================= The following generic LSK files are provided on this volume: naif[VER].TLS If this volume contains multiple LSK files, the one with the latest version ([VER]) supersedes all previous versions. Kernel File Details =================== The most detailed description of the data in an LSK file is provided in metadata included inside the description area of the file. This information can be viewed using any text editor program. Contact Information =================== Regarding MGS project specific information provided in this data set and for general information about SPICE system: Charles H. Acton, Jr, (818)-354-3869, Chuck.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 301-125L 4800 Oak Grove Drive Pasadena CA 91109 USA