KPL/SCLK JUICE SCLK File -- TEST DATA -- FICTIONAL =========================================================================== This file is a SPICE spacecraft clock (SCLK) kernel containing information required for the JUpiter ICy moons Explorer (JUICE) spacecraft on-board clock to UTC conversion. This file contains the data necessary for converting from ET to ticks for the FICTIONAL JUICE spacecraft clock (clock ID code 907) This is intended for study purposes or for those situations in which a clock is not available for the structure whose orientation will be modelled by a C-kernel. Version and Date ----------------------------------------------------------------------------- Version 0.0 -- February 24, 2016 -- Marc Costa Sitja, ESAC/ESA Initial release. Version 0.1 -- March 26, 2016 -- Jorge Diaz del Rio, ODC Space Redefined to be used with test CK files for recently added structures. Production/History of this SCLK file ----------------------------------------------------------------------------- This file has been manually created by Jorge Diaz del Rio (ODC Space) and contains FAKE DATA. It is intended ONLY for study purposes. NO DATA ANALYSIS SHALL BE PERFORMED BASED ON THIS FILE. This SCLK kernel is intended to be used with test CK files with structure IDs listed below on board the spacecraft -907 (JUICE): JUICE_SPACECRAFT -907000 JUICE_SA+Y -907011 JUICE_SA-Y -907013 JUICE_MAJIS_SCAN -907401 JUICE_SWI_SCANNER -907810 Usage ----------------------------------------------------------------------------- This file must be loaded into the user's program by a call to the FURNSH subroutine CALL FURNSH ( 'this_file_name; ) -- FORTRAN furnsh_c ( "this_file_name" ); -- C cspice_furnsh, 'this_file_name' -- IDL cspice_furnsh( 'this_file_name' ) -- MATLAB in order to use the SPICE SCLK family of subroutines to convert JUICE 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.FFFFF where: SSSSSSSSSS -- count of on-board seconds FFFFF -- count of fractions of a second with one fraction being 1/65536 of a second; normally this field value is within 0..65535 range. References ---------------------------------------------------------------------------- 1. SCLK Required Reading Document 2. TIME Required Reading Document 3. KERNEL Pool Required Reading Document Inquiries and Contact Information ----------------------------------------------------------------------------- If you have any questions regarding this file contact SPICE support at ESAC: Marc Costa Sitja (+34) 91-8131-457 mcosta@sciops.esa.int, esa_spice@sciops.esa.int or NAIF at JPL: Boris Semenov (818) 354-8136 Boris.Semenov@jpl.nasa.gov Kernel DATA ----------------------------------------------------------------------------- This SCLK file is constructed so that the valid SCLK strings are simply the number of TDB seconds that have passed since the Ephemeris epoch 2022-MAY-31-23:59:59.999. Thus 1/288929292.8201 simply represents the epoch that occurs 288929292.12514 TDB seconds past the ET epoch 2022-MAY-31-23:59:59.999. For all time, the clock runs at the same rate as TDB. There is only one partition for this clock. \begindata SCLK_KERNEL_ID = ( @2016-03-26 ) SCLK_DATA_TYPE_907 = ( 1 ) SCLK01_TIME_SYSTEM_907 = ( 1 ) SCLK01_N_FIELDS_907 = ( 2 ) SCLK01_MODULI_907 = ( 4294967296 65536 ) SCLK01_OFFSETS_907 = ( 0 0 ) SCLK01_OUTPUT_DELIM_907 = ( 1 ) SCLK_PARTITION_START_907 = ( 0 ) SCLK_PARTITION_END_907 = ( 2.81474976710656E14 ) SCLK01_COEFFICIENTS_907 = ( 0.0000000000000E+00 @2022-MAY-31-23:59:59.999 1 ) \begintext End of SCLK file.