KPL/MK Meta-kernel for JUICE CReMA 3.2 gan N56 Pp5 Q19 ============================================================================ This meta-kernel lists the JUICE SPICE kernels providing information for the Baseline launch (141a). The main updates are: - Decrease of radiation dose and eclipses - Europa FBs radio source shielding and illumination adjustement - 29 deg max Tour inclination The scenario is based on the following OEM file provided by Mission Analysis: JUICE_CReMA32d0_Baseline_0001.oem In addition, for the Ganymede phase the trajectory included in the previous OEM is superseded by: juice_mat_crema_4_1_N56_Pp5_Q19_v01.bsp Note the default attitude of the spacecraft has been updated from CReMA 3.2 so to account for the updated Ganymede trajectory. Warning: computations of the spacecraft positions and velocities may show discontinuities when the kernels: juice_mat_crema_3_2_20220601_20330626_v01.bsp and juice_mat_crema_4_1_N56_Pp5_Q19_v01.bsp start to overlap on 2033 FEB 16 00:56:52.934. Usage of the Meta-kernel ------------------------------------------------------------------------- This metakernel is only for project analysis at this stage. Note that a default Attitude profile has been implemented for the whole mission by the following C-Kernels: juice_sc_sat_crema_x_y_default_YYMMDD_YYMMDD_f20160326_vnn.bc juice_sc_sat_crema_x_y_comms_YYMMDD_YYMMDD_f20160326_vnn.bc juice_sc_sat_crema_x_y_conjctn_YYMMDD_YYMMDD_f20160326_vnn.bc juice_sc_sat_crema_x_y_flybys_YYMMDD_YYMMDD_f20160326_vnn.bc Please note that the order in which the previous kernels is loaded is important. The *_default_* kernel implements the default attitude during the main phases of the mission (interplanetary transfer, Jupiter Tour and Ganymede Phase) this kernel needs to be loaded first and is followed by *_comms_* which provides a baseline of the communications attitude (required to perform an 8 hours daily pass with Malargue). If desired this kernel can be removed to omit this attitude. In order to generate this attitude, we consider JUICE to be visible from MALARGUE when JUICE has elevation above 10 degrees in the MALARGUE topocentric reference frame MALARGUE_TOPO. Next a CK implementing the Conjunction phases is set with a default conjunction orientation. Finally the *_flybys_* kernel is loaded which includes the default S/C orientation for the planetary swing-bys and moon fly-bys. In addition a default Solar Arrays orientation is implemented as follows: by default the Solar Arrays are in the power optimized direction except during pushbrooms around flybys CA when the solar panel in the S/C XY (panel surface normal aligned with +Z, wich is SADM=0). Reading the comments of the binary C-Kernels is very helpful to understand the implemented attitude. You can use the following NAIF command line utility to extract that information from the kernels: > commnt -r juice_sc_*.bc The kernels listed below can be obtained from the ESA SPICE Service FTP server: ftp://spiftp.esac.esa.int/data/SPICE/JUICE/kernels/ Implementation Notes ------------------------------------------------------------------------- IMPORTANT: this trajectory is designed using the latest Jupiter Moons ephemeris data as provided by the IMCCE - so called IMCCE L2 model It is recommended that users make a local copy of this file and modify the value of the PATH_VALUES keyword to point to the actual location of the JUICE SPICE data set's ``data'' directory on their system. Replacing ``/'' with ``\'' and converting line terminators to the format native to the user's system may also be required if this meta-kernel is to be used on a non-UNIX workstation. DISCLAIMER: Pleae note that the current kernels are pre-operational and they are subject to change. ------------------- This file was created on June 24, 2021 by Alfredo Escalante ESAC/ESA. \begindata PATH_VALUES = ( '../..' ) PATH_SYMBOLS = ( 'KERNELS' ) KERNELS_TO_LOAD = ( '$KERNELS/ck/juice_sc_sat_crema_3_2_g_default_20220601_20330702_f20160326_v01.bc' '$KERNELS/ck/juice_sc_sat_crema_3_2_g_comms_20291007_20330701_f20160326_v01.bc' '$KERNELS/ck/juice_sc_sat_crema_3_2_g_conjctn_20250923_20330206_f20160326_v01.bc' '$KERNELS/ck/juice_sc_sat_crema_3_2_g_flybys_20230530_20320915_f20160326_v01.bc' '$KERNELS/ck/juice_lpbooms_f20160326_v01.bc' '$KERNELS/ck/juice_magboom_f20160326_v03.bc' '$KERNELS/ck/juice_mga_zero_f20160326_v02.bc' '$KERNELS/ck/juice_majis_scan_zero_f20160326_v02.bc' '$KERNELS/ck/juice_swi_scan_zero_f20160326_v02.bc' '$KERNELS/ck/juice_sa_crema_3_2_g_default_f20160326_v01.bc' '$KERNELS/fk/juice_v23.tf' '$KERNELS/fk/juice_sci_v08.tf' '$KERNELS/fk/juice_ops_v07.tf' '$KERNELS/fk/juice_dsk_surfaces_v03.tf' '$KERNELS/fk/juice_roi_v01.tf' '$KERNELS/fk/rssd0002.tf' '$KERNELS/fk/earth_topo_050714.tf' '$KERNELS/fk/earthfixediau.tf' '$KERNELS/fk/estrack_v03.tf' '$KERNELS/ik/juice_gala_v03.ti' '$KERNELS/ik/juice_janus_v06.ti' '$KERNELS/ik/juice_jmc_v02.ti' '$KERNELS/ik/juice_majis_v05.ti' '$KERNELS/ik/juice_navcam_v01.ti' '$KERNELS/ik/juice_pep_v09.ti' '$KERNELS/ik/juice_rime_v04.ti' '$KERNELS/ik/juice_rpwi_v02.ti' '$KERNELS/ik/juice_str_v01.ti' '$KERNELS/ik/juice_swi_v07.ti' '$KERNELS/ik/juice_uvs_v03.ti' '$KERNELS/ik/juice_aux_v00.ti' '$KERNELS/lsk/naif0012.tls' '$KERNELS/pck/pck00010.tpc' '$KERNELS/pck/de-403-masses.tpc' '$KERNELS/pck/gm_de431.tpc' '$KERNELS/pck/juice_jup006.tpc' '$KERNELS/pck/juice_roi_v00.tpc' '$KERNELS/sclk/juice_fict_20160326.tsc' '$KERNELS/spk/juice_struct_v10.bsp' '$KERNELS/spk/juice_cog_v00.bsp' '$KERNELS/spk/juice_roi_v01.bsp' '$KERNELS/spk/de432s.bsp' '$KERNELS/spk/mar085_20200101_20400101.bsp' '$KERNELS/spk/earthstns_fx_050714.bsp' '$KERNELS/spk/estrack_v03.bsp' '$KERNELS/spk/jup310_20200101_20500101.bsp' '$KERNELS/spk/jup343_20200101_20500101.bsp' '$KERNELS/spk/noe-5-2017-gal-a-reduced_20200101_20380902.bsp' '$KERNELS/spk/juice_mat_crema_3_2_20220601_20330626_v01.bsp' '$KERNELS/spk/juice_mat_crema_4_1_N56_Pp5_Q19_v01.bsp' '$KERNELS/dsk/juice_io_plasma_torus_v04.bds' '$KERNELS/dsk/juice_sc_bus_v03.bds' '$KERNELS/dsk/juice_sc_mag_v03.bds' '$KERNELS/dsk/juice_sc_mga_apm_v03.bds' '$KERNELS/dsk/juice_sc_mga_dish_v03.bds' '$KERNELS/dsk/juice_sc_sa+y_v03.bds' '$KERNELS/dsk/juice_sc_sa-y_v03.bds' ) \begintext SPICE Kernel Dataset Version ------------------------------------------------------------------------ The SPICE Kernel Dataset version of the kernels present in this meta-kernel is provided by the following keyword (please note that this might not be the last version of the SPICE Kernel Dataset): \begindata SKD_VERSION = 'v290_20210624_001' \begintext 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 End of MK file.