KPL/SCLK


DAWN SCLK File
===========================================================================

     This file is a SPICE spacecraft clock (SCLK) kernel containing
     information required for DAWN spacecraft on-board clock to UTC
     conversion.


Production/History of this SCLK file
--------------------------------------------------------

     This file was generated by the NAIF utility program MAKCLK, version
     3.5.2, from the most recent DAWN spacecraft SCLKvSCET file (see
     corresponding sections of these comments for a copy of the source
     SCLKvSCET file and MAKCLK setup file).


Usage
--------------------------------------------------------

     This file must be loaded into the user's program by a call to the
     FURNSH subroutine

          CALL FURNSH( 'this_file_name' )

     in order to use the SPICELIB SCLK family of subroutines to convert
     DAWN spacecraft on-board clock to ET and vice versa.


SCLK Format
--------------------------------------------------------

     The on-board clock, the conversion for which is provided by this SCLK
     file, consists of two fields:

          SSSSSSSSSS:FFF

     where:

          SSSSSSSSSS -- count of on-board seconds

          FFF        -- count of fractions of a second with one fraction
                        being 1/256 of a second; normally this field value
                        is within 0..255 range.


References
--------------------------------------------------------

         1.   SCLK Required Reading Document

         2.   MAKCLK User's Guide Document

         3.   SFOC SCLKvSCET SIS Document


Inquiries
--------------------------------------------------------

     If you have any questions regarding this file contact NAIF  at JPL

           Charles H. Acton, Jr
           (818) 354-3869
           Chuck.Acton@jpl.nasa.gov

           Boris V. Semenov
           (818) 354-8136
           Boris.Semenov@jpl.nasa.gov


Source SCLKvSCET File
--------------------------------------------------------

     CCSD3ZS00001$$sclk$$NJPL3KS0L015$$scet$$
     MISSION_NAME=DAWN;
     SPACECRAFT_NAME=DAWN;
     DATA_SET_ID=SCLK_SCET;
     FILE_NAME=DAWN_203_SCLKSCET.00006;
     PRODUCT_CREATION_TIME=2007-289T14:56:25.000;
     PRODUCT_VERSION_ID=00003;
     PRODUCER_ID=DSMS_TIME_SERVICES;
     APPLICABLE_START_TIME=2000-001T11:58:55.816;
     APPLICABLE_STOP_TIME=2008-103T02:29:46.995;
     MISSION_ENVIRONMENT=ops;
     MISSION_ID=30;
     SPACECRAFT_ID=203;
     CCSD3RE00000$$scet$$NJPL3IS00613$$data$$
     *____SCLK0_____    ________SCET0________ _DUT__ __SCLKRATE__
               0.000    2000-001T11:58:55.816 64.184  1.000000000
       189345665.000    2006-001T00:00:00.816 64.184  0.000010000
       189345666.000    2006-001T00:00:00.817 65.184  1.000000000
       244538000.000    2007-274T19:12:14.817 65.184  1.006101025
       244539000.000    2007-274T19:29:00.918 65.184  1.000007143
       244710000.000    2007-276T18:59:02.139 65.184  1.000010166
       244711000.000    2007-276T19:15:42.150 65.184  1.000007152
       245501801.000    2007-285T22:55:48.806 65.184  1.000033235
       245502801.000    2007-285T23:12:28.839 65.184  0.998999041
       245513651.000    2007-286T02:13:07.979 65.184  0.999015999
       245514651.000    2007-286T02:29:46.995 65.184  1.000000001
     CCSD3RE00000$$data$$CCSD3RE00000$$sclk$$
     


MAKCLK Setup file
--------------------------------------------------------

     SCLKSCET_FILE          = DAWN_203_SCLKSCET.00006.clean
     OLD_SCLK_KERNEL        = /sdma/naif/ops/projects/DAWN/scet/bin/dawn_template.tsc
     FILE_NAME              = DAWN_203_SCLKSCET.00006.tsc
     NAIF_SPACECRAFT_ID     = -203
     LEAPSECONDS_FILE       = /sdma/naif/ops/projects/DAWN/lsk/dawn.tls
     PARTITION_TOLERANCE    = 10
     LOG_FILE               = DAWN_203_SCLKSCET.00006.log
     


Kernel DATA
--------------------------------------------------------

\begindata


SCLK_KERNEL_ID           = ( @2007-10-17/03:16:03.00 )

SCLK_DATA_TYPE_203        = ( 1 )
SCLK01_TIME_SYSTEM_203    = ( 2 )
SCLK01_N_FIELDS_203       = ( 2 )
SCLK01_MODULI_203         = ( 4294967296 256 )
SCLK01_OFFSETS_203        = ( 0 0 )
SCLK01_OUTPUT_DELIM_203   = ( 1 )

SCLK_PARTITION_START_203  = ( 0.0000000000000E+00 )

SCLK_PARTITION_END_203    = ( 1.0995116277750E+12 )

SCLK01_COEFFICIENTS_203   = (
 
    0.0000000000000E+00     -3.5763036976277E-10     1.0000000000053E+00
    4.8472490496000E+10     1.8934566600100E+08     1.0000000000000E+00
    6.2601728000000E+10     2.4453800000100E+08     1.0061009999812E+00
    6.2601984000000E+10     2.4453900610200E+08     1.0000071403510E+00
    6.2645760000000E+10     2.4471000732300E+08     1.0000110000074E+00
    6.2646016000000E+10     2.4471100733400E+08     1.0000071522418E+00
    6.2848461056000E+10     2.4550181399000E+08     1.0000329999924E+00
    6.2848717056000E+10     2.4550281402300E+08     9.9899907834244E-01
    6.2851494656000E+10     2.4551365316300E+08     9.9901600000262E-01
    6.2851750656000E+10     2.4551465217900E+08     1.0000000010000E+00 )

\begintext