ExoMars2016 SPK files =========================================================================== This ``aareadme.txt'' file describes the contents of the kernels/spk directory of the ExoMars 2016 SPICE Kernel Dataset. It was last modified on April 05, 2021 by Ricardo Valles Blanco, ESAC/ESA. Brief Summary -------------------------------------------------------- This directory contains the SPICE SP-Kernel files for the ExoMars 2016 mission, including mission analysis, nominal and operational spacecraft trajectory SPKs, generic planetary and satellite ephemeris SPKs. File naming conventions -------------------------------------------------------- Naming Scheme for ExoMars 2016 spacecraft SPKs: The naming scheme for the ExoMars 2016 spacecraft trajectory SPKs is: em16_SC_TYPE[_ID][_DESC]_YYYYMMDD_YYYYMMDD_vNN.bsp where SC acronym of the spacecraft: tgo: for the Trace Gas Orbiter (TGO) spacecraft; edm: for the Schiaparelli (EDM) lander; TYPE Data type, where a reference to the originator of the data, the type of data and the reference period is provided. This is a three letter acronym. The first letter defines the file originator: s: Science Operations Center; m: Mission Analysis; f: Flight Dynamics; the second letter defines the reference period of the data: c: Cruise phase reference; p: Pre-aerobraking phase reference; a: Aerobraking phase reference; l: Science phase Long term reference; m: Science phase Medium term reference; s: Science phase Short term reference; o: Undefined reference; the third letter indicates the type of data p: Predicted and often reconstructed data; r: Reconstructed data; t: Test data; ID mapping to the original file product IDs as defined per an ICD document (optional); DESC free text description of any particular aspect of the data (optional); YYYYMMDD coverage start and stop times in TDB (required); NN version number, starting from 01 (required; e.g. 01); The naming scheme for the ExoMars 2016 spacecraft center-of-gravity SPKs is: em16_SC_cog[_ID][_YYYYMMDD_YYYYMMDD]_vNN.bsp where SC acronym of the spacecraft: tgo: for the Trace Gas Orbiter (TGO) spacecraft; edm: for the Schiaparelli (EDM) lander; ID mapping to the original file product IDs as defined per an ICD document (optional); YYYYMMDD coverage start and stop times in TDB (optional); NN version number, starting from 01 (required; e.g. 01); The naming scheme for the ExoMars 2016 spacecraft structures SPKs is: em16_SC_structures_vNN.bsp where SC acronym of the spacecraft: tgo: for the Trace Gas Orbiter (TGO) spacecraft; edm: for the Schiaparelli (EDM) lander; NN version number, starting from 01 (required; e.g. 01); Naming Scheme for Generic Planetary Ephemeris SPKs The naming scheme for generic planetary SPKs is: deNNN.bsp where NNN DE version (required; e.g. 421); Naming Scheme for Generic Mars Satellite Ephemeris SPKs The naming scheme for generic mars satellite SPKs is: marNNN[_EXTRA].bsp where NNN satellite ephemeris number (required; e.g. 083); EXTRA additional information token (optional); Naming Scheme for Generic Outer Planets Ephemeris SPKs The naming scheme for generic mars satellite SPKs is: outerplanets_vNNNN.BSP where NNNN version (required; e.g. 0004); Naming Scheme for ESA ESTRACK ground stations SPKs The naming scheme for ESA ESTRACK ground stations SPKs is: estrack_vNN.bsp where NN version (required; e.g. 01); Naming Scheme for ESA New Norcia ground station SPKs The naming scheme for ESA New Norcia ground stations SPKs is: new_norcia.bsp Current SPK Kernels Set -------------------------------------------------------- em16_tgo_fsp_NNN_NN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains TGO spacecraft operational Mars centric ephemeris for the science phase. This file contains both reconstructed and predicted data. The predicted data typically starts around 22:00 and 23:59 CET of the day before the source file was provided by Flight Dynamics (which is the SPK generation date). This file should be considered final for the data period it covers and should be used for data analysis. Please note that SPICE Toolkit Version N66 or higher is required to use the latest versions of these SPKs. Created by the ESA SPICE Service (ESS). em16_tgo_flp_NNN_NN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains TGO spacecraft long term planning operational Mars centric ephemeris for the science phase. This file contains only predicted data. This files are used for Long and Medium term planning purposes. Created by the ESA SPICE Service (ESS). em16_tgo_fap_NNN_NN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains TGO spacecraft operational Mars centric ephemeris for the aerobraking phase. This file contains both reconstructed and predicted data. The predicted data typically starts around 22:00 and 23:59 CET of the day before the source file was provided by Flight Dynamics (which is the SPK generation date). This file should be considered final for the data period it covers. Created by the ESA SPICE Service (ESS). em16_tgo_fpp_NNN_NN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains TGO spacecraft operational Mars centric ephemeris for the pre-aerobraking phase. This file contains both reconstructed and predicted data. This files should be considered final for the data period it covers. Created by the ESA SPICE Service (ESS). em16_tgo_fcp_NNN_NN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains TGO spacecraft operational Sun centric ephemeris for the Cruise and Near-Earth Commissioning phases. This files contain both reconstructed and predicted data. This files should be considered final for the data period it covers. Created by the ESA SPICE Service (ESS). em16_tgo_struct_vNN.bsp SPICE SPK file that contains TGO spacecraft structures positions that apply during all the mission. Created by the ESA SPICE Service (ESS). em16_tgo_cog_NNN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains the history of the predicted position of the TGO spacecraft center-of-gravity (CoG). It is important to note that the TGO trajectory SPK files provide ephemeris information for TGO (-143) and refer to the CoG. This file provides the position of TGO_SPACECRAFT (-143000). Created by the ESA SPICE Service (ESS). em16_tgo_cog_NNN_NN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains the best predicted position information of the TGO spacecraft center-of-gravity (CoG), and that was used to generate the corresponding SPICE SPK file that contains TGO (-143) reconstructed ephemeris. This file provides the position of TGO_SPACECRAFT (-143000). Created by the ESA SPICE Service (ESS). em16_edm_fpd_NNN_NN_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains EDM lander operational Mars centric ephemeris as provided by Flight Dynamics. Created by the ESA SPICE Service. em16_edm_sot_landing_site_YYYYMMDD_YYYYMMDD_vVV.bsp SPICE SPK file that contains EDM lander landing site Mars centric ephemeris. Created by the ESA SPICE Service. de432s.bsp SPICE SPK file containing JPL planetary ephemerides version DE432. Created by NAIF, JPL. mar097_YYYYMMDD_YYYYMMDD.bsp SPICE SPK file containing JPL Martian satellite ephemerides version MAR097. Created by NAIF, JPL. earthstns_itrf93_YYMMDD.bsp SPICE SPK file containing ephemeris data for NASA DSN stations relative to the terrestrial reference frame label 'ITRF93'. This file was released the 14th of July 2005 by NAIF, JPL. estrack_vNN.bsp SPICE SPK file that defines the position for each of the ESA ESTRACK ground stations, as seen from the center of the Earth, in the topocentric frame defined in the corresponding ESTRACK FK. Created by the ESA SPICE Service (ESS). earthstns_ru_YYYYMMDD.bsp SPICE SPK file that contains the position for each of the Russian ground stations relative to the center of the Earth. Created by IKI. new_norcia.bsp SPICE SPK file that defines the position of the ESA New Norcia ground station, as seen from the center of the Earth, in the topocentric frame defined in the corresponding New Norcia FK. outerplanets_vNNNN.bsp SPICE SPK file that contains information (predicted) for the outer planets of the solar system: Jupiter, Saturn, Uranus and Neptune. It is meant to complement de432s.bsp, which contains information for their barycenters, but not the bodies themselves. This file is generated after several ephemeris files. Created by NAIF, JPL. em16_tgo_relay_locations_vNN.bsp SPICE SPK file that contains position information for selected Landers and Rovers for which TGO spacecraft is a relay for. Created by ExoMars2016 SOC. Other directory contents -------------------------------------------------------- aareadme.txt This file. Particulars -------------------------------------------------------- Nothing to report. Kernel File Details -------------------------------------------------------- The most detailed description of the data in a binary SPK file is provided in metadata included inside the comment area of the file. This information can be viewed using the utility programs COMMNT and SPACIT included in the NAIF Toolkit. 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 SPICE support at IKI: Alexander Abbakumov +7 (495) 333-40-13 aabbakumov@romance.iki.rssi.ru or NAIF at JPL: Boris Semenov +1 (818) 354-8136 Boris.Semenov@jpl.nasa.gov References and required readings -------------------------------------------------------- 1. ``SPK Required Reading'', NAIF Document End of aareadme file.