KPL/SCLK JUICE SCLK File -- 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 28999) This is intended for study purposes or for those situations in which a predicted data is used and whose orientation will be modelled by a C-kernel. Version and Date ----------------------------------------------------------------------------- Version 0.2 -- November 23, 2022 -- Alfredo Escalante Lopez, ESAC/ESA Updated clock output string delimiter to ":" and parallel time system to Terrestrial dynamical time. Version 0.1 -- October 21, 2022 -- Marc Costa Sitja, ESAC/ESA Updated description and filename dates from YYYYMMDD to YYMMDD. Version draft-0.3 -- November 24, 2021 -- Ricardo Valles Blanco, ESAC/ESA Updated clock ID code to 28999 and updated contact information. Version draft-0.2 -- June 04, 2016 -- Marc Costa Sitja, ESAC/ESA Updated all NAIF ID codes from -907* to -28* since the JUICE spacecraft NAIF ID has been updated from -907 to -28. Updated filename following the convention described in ``ESA-SCI-SPICE-SRS-0003_Cross_Mission_Filename_Convention'' Version draft-0.1 -- May 12, 2016 -- Jorge Diaz del Rio, ODC Space Included JUICE_RIME, JUICE_MAG_BOOM and JUICE_RPWI_LBPx frames in the list of test CKs to be used with this file. Updated comments. Version draft-0.0 -- March 26, 2016 -- Jorge Diaz del Rio, ODC Space Initial release. Production/History of this SCLK file ----------------------------------------------------------------------------- This file has been manually created by Jorge Diaz del Rio (ODC Space) and contains FICTIONAL 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 -28 (JUICE): Name NAIF ID ======================== ========= JUICE_SPACECRAFT_PLAN -28001 JUICE_SA+Y_PLAN -28012 JUICE_SA-Y_PLAN -28016 JUICE_MGA_AZ_PLAN -28042 JUICE_MGA_EL_PLAN -28046 Usage ----------------------------------------------------------------------------- This file is used by the SPICE system as follows: programs that make use of this frame kernel must "load" the kernel normally during program initialization. Loading the kernel associates the data items with their names in a data structure called the "kernel pool". The routine that loads a kernel into the pool is shown below: FORTRAN: (SPICELIB) CALL FURNSH ( frame_kernel_name ) C: (CSPICE) furnsh_c ( frame_kernel_name ); IDL: (ICY) cspice_furnsh, frame_kernel_name MATLAB: (MICE) cspice_furnsh ( 'frame_kernel_name' ) This file must be loaded into the user's program in order to use the SPICE SCLK family of subroutines to convert JUICE FICTIONAL spacecraft on-board clock to ET and vice versa. This file was created and may be updated with a text editor or word processor. 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 the ESA SPICE Service (ESS) at ESAC: Alfredo Escalante Lopez (+34) 91-8131-429 spice@sciops.esa.int or the JUICE Science Operations Center at ESAC: Marc Costa Sitja (+34) 646-746-711 Marc.Costa@ext.esa.int 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_28999 = ( 1 ) SCLK01_TIME_SYSTEM_28999 = ( 2 ) SCLK01_N_FIELDS_28999 = ( 2 ) SCLK01_MODULI_28999 = ( 4294967296 65536 ) SCLK01_OFFSETS_28999 = ( 0 0 ) SCLK01_OUTPUT_DELIM_28999 = ( 2 ) SCLK_PARTITION_START_28999 = ( 0 ) SCLK_PARTITION_END_28999 = ( 2.81474976710656E14 ) SCLK01_COEFFICIENTS_28999 = ( 0.0000000000000E+00 @2022-MAY-31-23:59:59.999 1 ) \begintext End of SCLK file.