KPL/SCLK

SMART-1 Fictional SPICE SCLK Kernel
--------------------------------------------------------
 
   This file contains the data necessary for converting from ET to
   ticks for the fictional SMART-1 spacecraft clock (clock ID code 238.)
 
   This fictional clock begins at 2003-271T00:02:17.001 TDB and contains
   the following discontinuties:

       Time (TDB)                Reason for Partition
   ---------------------   ------------------------------
   2003-271T23:20:06.001   Onboard Clock Reset
   2003-273T07:32:06.000   Onboard Clock Reset
   2003-274T14:01:46.001   Onboard Clock Reset
   2003-287T08:10:15.001   Onboard Clock Reset
   2003-296T09:03:09.000   Onboard Clock Reset
   2004-056T13:25:02.000   Onboard Clock Reset
   2004-167T13:50:31.001   59.28820 seconds discontinuity   


   The clock has a granularity of 1/65536th a second.
 
   This SCLK is intended for study purposes and for those situations of
   data analysis, until a real clock is not available for the SMART-1
   spacecraft, to retrieve its orientation that has been modeled as a 
   CK.


   If you have any questions about this file that these comments don't
   answer, contact Jorge Diaz del Rio or Joe Zender at ESTEC: 
 
       Jorge Diaz del Rio -- jdiaz@rssd.esa.int    (+31) 71 565 5175
       Joe Zender         -- jzender@rssd.esa.int  (+31) 71 565 4919
 
Implementation notes
--------------------------------------------------------
 
   This SCLK file is constructed so that the valid SCLK strings are
   simply the number of whole TDB seconds that have passed since the
   Ephemeris epoch corresponding to the last reset of the clock,
   followed by the fractional seconds expressed as the count of
   1/65536th of a second. The start Ephemeris epoch corresponds to the
   original reset of the Onboard clock of SMART-1
 
   For all time, the clock runs at the same rate as TDB. There are 8
   different partition for this clock. This means ALL the resets of the
   SMART-1 clock, and one discontinuity observed (bigger than 1 s.) in
   the time correlation process have been included in this fictional
   clock. This circumstance makes the clock only usable for retrieving
   data from the SMART-1 CK file and NOT USABLE for any ACCURATE time
   conversion from UTC to On-board clock or vice versa.

   NOTE: By using this kernel to perform conversions from UTC to
   On-board clock or vice versa, an incertainty of +/- 1 second will
   be introduced in the obtained results.
 
   You must load this file into the kernel pool before using any of the
   SPICELIB SCLK routines. The code fragment
 
      CALL FURNSH ( < name of this file > )

   performs this task. To convert between ET and UTC, you will also
   need to load a leapseconds kernel. The additional call to FURNSH,
 
      CALL FURNSH ( < name of your leapsecond file > )

   will accomplish this. Note that you must supply the actual names of
   the files used on your system as arguments to LDPOOL. Because the
   file names are system dependent, we do not list them here.
 
   For more information, consult your SPICELIB required reading files.
   The following areas are covered:
 
      SCLK system                     SCLK required reading
      Time systems and conversion     TIME required reading
      Kernel pool                     KERNEL required reading


Kernel data
--------------------------------------------------------


\begindata

SCLK_KERNEL_ID           = ( @2005-03-04/12:37:58.00 )

SCLK_DATA_TYPE_238        = ( 1 )
SCLK01_TIME_SYSTEM_238    = ( 2 )
SCLK01_N_FIELDS_238       = ( 2 )
SCLK01_MODULI_238         = ( 4294967296 65536 )
SCLK01_OFFSETS_238        = ( 0 0 )
SCLK01_OUTPUT_DELIM_238   = ( 1 )

SCLK_PARTITION_START_238  = ( 2.3505182000000E+07
                             2.6674176000000E+07
                             7.8152451000000E+07
                             2.1006723000000E+07
                             6.2604049000000E+07
                             3.6327761000000E+07
                             1.8209275000000E+07
                             6.2863097284100E+11 )

SCLK_PARTITION_END_238    = ( 5.5199439660000E+09
                             7.6236072300000E+09
                             7.2726945970000E+09
                             7.2248822147000E+10
                             5.1231408847000E+10
                             7.0885489492900E+11
                             6.2863486828500E+11
                             2.8147497671065E+14 )

SCLK01_COEFFICIENTS_238   = (
 
    0.0000000000000E+00     1.1797940118500E+08     1.0000000000000E+00
    5.4964387840000E+09     1.1806327018500E+08     1.0000000000000E+00
    1.3093371838000E+10     1.1817919018400E+08     1.0000000000000E+00
    2.0287913984000E+10     1.1828897018500E+08     1.0000000000000E+00
    9.2515729408000E+10     1.1939107918500E+08     1.0000000000000E+00
    1.4368453420600E+11     1.2017185318400E+08     1.0000000000000E+00
    8.5250310137400E+11     1.3098756618400E+08     1.0000000000000E+00
    1.4811197603840E+12     1.4057949518500E+08     1.0000000000000E+00 )

\begintext