The INSIGHT SPICE Data Archive
========================================================================
   Last update: August 4, 2021
Introduction
============
   This document describes the INSIGHT SPICE archive, containing
   observation geometry and other ancillary data in the form of SPICE
   System kernel files for the INSIGHT lander and its instruments and
   structures, and for MARCO-A and MARCO-B spacecraft and their
   instruments and structures. It describes the archive directory
   structure, kernels included in the archive, their naming
   conventions, and provides pointers to the SPICE software and
   documentation.
Table of Contents
=================
   Introduction
   Table of Contents
   Overview
   Errata
   Archive Contents
   Kernel Types
   Archived Kernel Details
      SPK Files
      PCK Files
      IK Files
      CK Files
      LSK Files
      SCLK Files
      FK Files
      MK Files
   Miscellaneous Files
      Checksum Files
   File Formats
   SPICE Software and Documentation
   Contact Information
   Cognizant Persons
Overview
========
   This archive includes the complete set of INSIGHT, MARCO-A, and
   MARCO-B SPICE data files (kernel files), which can be accessed using
   SPICE software. The SPICE data contain geometric and other ancillary
   information needed to recover the full value of science instrument
   data. In particular SPICE kernels provide spacecraft and planetary
   ephemerides, spacecraft and instrument orientation, instrument
   mounting alignments, and data needed for relevant time conversions.
   Data in the SPICE kernel files must be accessed using the software
   called the SPICE Toolkit produced and distributed by the Navigation
   and Ancillary Information Facility (NAIF) Node of the Planetary Data
   System.
   This archive includes data covering from INSIGHT launch, 2018-05-05,
   through the end time of the latest Instrument Deployment Arm (IDA)
   orientation file supplied in the archive. Until the end of the
   spacecraft lifespan this archive will be accumulating with new data
   added according to the project archiving plan.
Back to Table of Contents
Errata
======
   1. This document is a simple HTML document. Providing documents in a
      simple mark-up format was allowed by earlier versions of the PDS4
      Standards but became prohibited in later versions starting summer
      2015. Since using HTML documents was compliant at the time when a
      similar document was first provided in the MAVEN PDS4 archive and
      since NAIF strives to make bundle description document format and
      style consistent across all archives, this document continues
      to exist in this archive as an HTML document.
   2. All MARCO-A and MARCO-B kernels included in the archive
      are labeled as being associate the INSIGHT instrument host.
   3. No SCLK kernels the instrument clocks (LOBT and AOBT) are
      provided or planned to be provided for.
   4. No deflected IDC SPKs and CKs are yet included in the archive.
      Some may be included in subsequent releases.
   5. The IDC and ICC frames definitions provided in the INSIGHT mission
      FK and their parameters provided in the corresponding IKs have
      not been full validated and, if used to compute derived geometry
      for these instruments, may produce results differing from the
      same kinds of geometric parameters provided in the image labels.
   6. The XML labels of the ancillary products have the reference_type
      attribute of the Internal_Reference association within the
      Reference_List class of the Context_Area class pointing to the latest
      archive description document set to "ancillary_to_data" which is not
      correct. The correct value "ancillary_to_document" could not be used
      in these labels because it is not available in the PDS4 information
      model (IM) 1.5.0.0 used by this archive. This value was added to IM
      only in the version 1.14.0.0.    
    
   7. The Miscellaneous collection was only added to the bundle in the 
      release 10 (September 2021) and therefore the checksum tables and 
      collection inventories and their labels that correspond to previous 
      releases were added irregularly in that release. This is reflected 
      in the bundle label of that particular release that contains 
      additional Bundle_Member_Entry classes for these miscellaneous 
      collections.    
Back to Table of Contents
Archive Contents
===============
   Files in this archive are organized into a set of subdirectories
   below the top-level directory. The following diagram shows the
   structure and content of these directories. The directory names are
   enclosed in square brackets ([]).
   [top-level-directory]
   |
   |- bundle_insight_spice_v*.xml        Bundle PDS4 label, one or more versions.
   |- readme.txt                         Bundle top-level readme file.
   |
   |-[spice_kernels]                     Directory containing SPICE kernels.
   | |
   | |- collection_spice_kernels_v*.xml  PDS4 labels for Spice Kernels collections.
   | |- collection_spice_kernels_inventory_v*.tab
   | |                                   Spice Kernels collections' inventories.
   | |
   | |-[ck]                              Directory containing CK files.
   | | |
   | | |-- *.bc                          Binary CK files.
   | | +-- *.xml                         PDS4 labels for CK files.
   | |
   | |-[fk]                              Directory containing FK files.
   | | |
   | | |-- *.tf                          Text FK files.
   | | +-- *.xml                         PDS4 labels for FK files.
   | |
   | |-[ik]                              Directory containing IK files.
   | | |
   | | |-- *.ti                          Text IK files.
   | | +-- *.xml                         PDS4 labels for IK files.
   | |
   | |-[lsk]                             Directory containing LSK files.
   | | |
   | | |-- *.tls                         Text LSK files.
   | | +-- *.xml                         PDS4 labels for LSK files.
   | |
   | |--[mk]                             Directory containing MK files.
   | | |
   | | |-- *.tm                          Text Meta-kernel files.
   | | +-- *.xml                         PDS4 labels for MK files.
   | |
   | |-[pck]                             Directory containing PCK files.
   | | |
   | | |-- *.tpc                         Text PCK files.
   | | +-- *.xml                         PDS4 labels for PCK files.
   | |
   | |-[sclk]                            Directory containing SCLK files.
   | | |
   | | |-- *.tsc                         Text SCLK files.
   | | +-- *.xml                         PDS4 labels for SCLK files.
   | |
   | +-[spk]                             Directory containing SPK files.
   |   |
   |   |-- *.bsp                         Binary SPK files.
   |   +-- *.xml                         PDS4 labels for SPK files.
   |
   |-+-[miscellaneous]                   Directory miscellaneous files.
   | |
   | |- collection_miscellaneous_v*.xml  PDS4 labels for miscellaneous collections.
   | |- collection_miscellaneous_inventory_v*.tab
   | |                                   Miscellaneous collections' inventories.
   | |
   | +-[checksum]                        Directory containing checksum files.
   |   |
   |   |-- *.tab                         Text checksum files.
   |   +-- *.xml                         PDS4 labels for checksum files.
   |
   +-[document]                          Directory containing documents.
     |
     |- collection_document_v*.xml       PDS4 labels for document collections.
     |- collection_document_inventory_v*.tab
     |                                   Document collections' inventories.
     |
     |- spiceds_v*.html                  This file and its earlier versions.
     +- spiceds_v*.xml                   PDS4 labels for this file and its earlier versions.
Back to Table of Contents
Kernel Types
============
   Different SPICE kernel types are used to store different kinds of
   ancillary data.
   SPK (Spacecraft Planet Kernel) files contain ephemerides (position
   and velocity) for spacecraft, planets, satellites, comets and
   asteroids as well as for moving or fixed spacecraft and instrument
   structures. SPK files are located under the spice_kernels/spk
   directory of this archive.
   PCK (Planetary Constants Kernel) files contain certain physical,
   dynamical and cartographic constants for target bodies, such as size
   and shape specifications, and orientation of the spin axis and prime
   meridian. PCK files are located under the spice_kernels/pck
   directory of this archive.
   IK (Instrument Kernel) files contain instrument parameters relevant
   for computing an instrument's geometry such as field-of-view
   definitions, CCD and optical distortion characteristics, and internal
   timing parameters. IK files are located under the spice_kernels/ik
   directory of this archive.
   CK (C-matrix Kernel) files contain time varying orientations for
   spacecraft, spacecraft structures, and articulating science
   instruments. CK files are located under the spice_kernels/ck
   directory of this archive.
   LSK (Leapseconds Kernel) files contain the leapseconds and the
   values of other constants required to perform a transformation
   between Universal Time Coordinated (UTC) and Ephemeris time (ET),
   which is also known as Barycentric Dynamical Time (TDB). LSK
   files are located under the spice_kernels/lsk directory of
   this archive.
   SCLK (Spacecraft Clock Kernel) files contain on-board clock
   calibration data required to perform a transformation between
   Ephemeris time (ET) and spacecraft on-board time (SCLK). SCLK files
   are located under the spice_kernels/sclk directory of this
   archive.
   FK (Frame definitions Kernel) files contain information required to
   define reference frames, sources of frame orientation data and
   connections between these frames and other frames supported within
   the SPICE system. The science instrument frame definitions provided
   in the FK files include mounting alignment information for the
   instruments. FK files are located under the spice_kernels/fk
   directory of this archive.
   MK (Meta-Kernel) files list sets of related SPICE kernels that
   should be used together, providing an easy way to make data from
   these kernel sets available to a SPICE-based application by loading
   meta-kernels into the program using the high level SPICE data loader
   routine FURNSH. MK files are located the spice_kernels/mk
   directory of this archive.
Archived Kernel Details
=======================
   The subsections below provide details, such as file naming
   conventions and specific details, for each of the kernel types
   included in this archive.
Back to Table of Contents
SPK Files
   SPK (Spacecraft Planet Kernel) files contain ephemerides (position
   and velocity) for spacecraft, planets, satellites, comets and
   asteroids as well as for moving or fixed spacecraft and instrument
   structures.
   This archive includes binary SPK files containing the following
   kinds of ephemeris data:
      -  planetary ephemeris SPKs
            These SPKs contain ephemeris data for the Solar System
            planet barycenters, and Sun, Mercury, Venus, Earth, and
            Moon, determined by the JPL Solar System Dynamics group and
            are named DEXXX, e.g. DE430.
      -  Martian satellite ephemeris SPKs
            These SPKs contain ephemeris data for Mars, Phobos, Deimos,
            Sun, Earth barycenter, and Earth, determined by the
            JPL Solar System Dynamics group and are named MARXXX, e.g.
            MAR097.
      -  reconstructed spacecraft cruise trajectory SPKs
            These SPKs contain the reconstructed INSIGHT spacecraft
            trajectory for cruise determined by the INSIGHT Navigation
            (NAV) team, JPL.
      -  reconstructed spacecraft EDL trajectory SPKs
            These SPKs contain the reconstructed INSIGHT spacecraft
            trajectory during Entry Descent Landing (EDL) determined by
            the INSIGHT EDL team, LMCO.
      -  actual landing site position SPKs
            These SPKs contain the actual location of the INSIGHT
            landing site in the Mars body-fixed frame, determined by
            the INSIGHT science team.
      -  landing site -to- lander offset SPKs
            These SPKs contain the zero offset between the INSIGHT landing
            site and the lander.
      -  structures SPKs
            These SPKs contain fixed locations of selected spacecraft
            structures and science instruments, based on the INSIGHT
            engineering documentation.
      -  deflected IDC position SPKs
            These SPKs contain the deflected (gravity-compensated)
            position of the INSIGHT Instrument Deployment Camera (IDC),
            based on IDA telemetry and covering only IDC image times.
      -  MARCO-A and MARCO-B trajectory SPKs
            These SPKs contain the reconstructed MARCO-A and MARCO-B
            spacecraft trajectories for cruise determined by the JPL
            Navigation (NAV) team, JPL.
   The SPK files are provided under the spice_kernels/spk
   directory and are named according to the following schemes:
      -  planetary ephemeris SPKs
               deVVVs.bsp
            where
               VVV       is the ephemeris version.
               s         (optional) indicates that the original file
                         coverage was shortened to reduce the file
                         size.
      -  Martian satellite ephemeris SPKs
               marVVVs.bsp
            where
               VVV       is the ephemeris version.
               s         (optional) indicates that the original file
                         coverage was shortened to reduce the file
                         size.
      -  reconstructed spacecraft cruise trajectory SPKs
               insight_cru_SSS_vV.bsp
            where
               SSS       is the solution source:
                            ops    operational solution
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  reconstructed spacecraft EDL trajectory SPKs
               insight_edl_rec_vV.bsp
            where
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  actual landing site position SPKs
               insight_ls_opsYYMMDD_iauYYYY_vV.bsp
            where
               YYMMDD    is the date when the landing site location
                         stored in the file was determined or
                         released.
               YYYY      is the publication year of the IAU Mars
                         rotation model, with which this SPK should be
                         used.
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  landing site -to- lander offset SPKs
               insight_atls_opsYYMMDD_vV.bsp
            where
               YYMMDD    is the date consistent with the corresponding
                         landing site position SPK.
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  structures SPKs
               insight_struct_vVV.bsp
            where
               VV        is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  deflected IDC position SPKs
               insight_idc_rec_YYMMDD_YYMMDD_vV.bsp
            where
               YYMMDD    are the file coverage start and stop dates.
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  MARCO-A and MARCO-B trajectory SPKs
               marcoS_YYMMDD_yymmdd_YYMMDD_vV.bsp
            where
               S         is the spacecraft identifier:
                            a      MARCO-A
                            b      MARCO-B
               YYMMDD    are the file coverage start and stop dates.
               yymmdd    is the end date of the reconstructed part of the
                         file.
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
   The most detailed description of the data in each SPK file is
   provided in metadata included inside the comment area of the file.
   This information can be viewed using the utility program COMMNT
   included in the NAIF Toolkit.
Back to Table of Contents
PCK Files
   PCK (Planetary Constants Kernel) files contain certain physical,
   dynamical, and cartographic constants for target bodies, such as
   size and shape specifications, and orientation of the spin axis and
   prime meridian.
   This archive includes generic text PCK files produced by NAIF,
   containing data from the reports of the IAU Working Group on
   Cartographic Coordinates and Rotational Elements. The generic text
   PCK version 00010 contains data from the 2009 report.
   The PCK files are provided under the spice_kernels/pck
   directory and are named according to the following scheme:
      -  generic text PCKs
               pckVVVVV.tpc
            where
               VVVVV     is the version; the file with the largest
                         number is the latest, but the user of PCK
                         data must decide if the latest version,
                         or an earlier version, is appropriate
                         for his/her analysis task.
   The most detailed description of the data in a text PCK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
Back to Table of Contents
IK Files
   IK (Instrument Kernel) files contain instrument parameters relevant
   for computing an instrument's observation geometry such
   field-of-view definitions, CCD and optical distortion
   characteristics, and internal timing parameters.
   This archive includes text IK files for INSIGHT instruments, for
   which common instrument geometric parameters normally stored in IKs
   are applicable, such as Instrument Context Camera (ICC), Instrument
   Deployment Camera (IDD), and Heat Flow and Physical Properties
   Package (HP3) Radiometer, and for the INSIGHT antennas.
   The IK files are provided under the spice_kernels/ik
   directory and are named according to the following scheme:
      -  instruments (other than cameras) and antennae IK files
               insight_NAME_vVV.ti
            where
               NAME      is the instrument acronym:
                            ant      (for antennae)
                            hp3_rad  (for HP3 Radiometer)
               VV        is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
      -  camera IK files
               insight_NAME_YYYYMMDD_c03.ti
            where
               NAME      is the instrument acronym:
                            icc      (Instrument Context Camera)
                            idc      (Instrument Deployment Camera
               VV        is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
   The most detailed description of the data in a text IK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
Back to Table of Contents
CK Files
   CK (C-matrix Kernel) files contain time varying orientations for
   spacecraft, articulating spacecraft structures, and articulating
   science instruments.
   This archive includes binary CK files containing the following kinds
   of orientation data:
      -  reconstructed spacecraft cruise orientation CKs
            These CKs contain the reconstructed INSIGHT spacecraft
            cruise attitude determined on-board and downlinked in
            spacecraft telemetry.
      -  reconstructed spacecraft EDL orientation CKs
            These CKs contain the reconstructed INSIGHT spacecraft EDL
            attitude, from the EDL entry point to landing, determined
            by the INSIGHT EDL team,
      -  reconstructed spacecraft landed orientation CKs
            These CKs contain the reconstructed INSIGHT spacecraft
            landed attitude based on post-landing assessment done by the
            project engineering team.
      -  cruise-lander frame connection CKs
            These CKs contain the fixed rotations between the INSIGHT
            lander and cruise frames needed to complete SPICE reference
            chains at all times.
      -  MARCO-A and MARCO-B orientation CKs
            These CKs contain the reconstructed MARCO-A and MARCO-B
            attitude determined on-board and downlinked in spacecraft
            telemetry.
      -  IDA orientation CKs
            These CKs contain the reconstructed encoder or
            potentiometer telemetry-based orientation of the INSIGHT
            Instrument Deployment Arm (IDA) joints.
      -  deflected IDC orientation CKs
            These CKs contain the deflected (gravity-compensated)
            encoder or potentiometer telemetry-based orientation of the
            INSIGHT Instrument Deployment Camera (IDC).
   The CK files are provided under the spice_kernels/ck
   directory and are named according to the following scheme:
      -  reconstructed spacecraft cruise orientation CKs
               insight_cru_rec_YYMMDD_YYMMDD_vVV.bc
            where
               YYMMDD    are the file coverage start and stop dates.
               VV        is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  reconstructed spacecraft EDL orientation CKs
               insight_edl_rec_vV.bc
            where
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  reconstructed spacecraft landed orientation CKs
               insight_surf_ops_vV.bc
            where
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  cruise-lander frame connection CKs
               insight_cruise2lander_vV.bc
               insight_lander2cruise_vV.bc
            where
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  MARCO-A and MARCO-B orientation CKs
               marcoS_cru_rec_YYMMDD_YYMMDD_vVV.bc
            where
               S         is the spacecraft identifier:
                            a      MARCO-A
                            b      MARCO-B
               YYMMDD    are the file coverage start and stop dates.
               VV        is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  IDA orientation CKs
               insight_ida_SSS_YYMMDD_YYMMDD_vV.bc
            where
               SSS       is the IDA joint angle value source:
                            enc    encoders
                            pot    potentiometers
               YYMMDD    are the file coverage start and stop dates.
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
      -  deflected IDC orientation CKs
               insight_idc_SSS_YYMMDD_YYMMDD_vV.bc
            where
               SSS       is the IDA joint angle value source:
                            enc    encoders
                            pot    potentiometers
               YYMMDD    are the file coverage start and stop dates.
               V         is the version; the file with the latest
                         version supersedes all similarly named files
                         with earlier versions.
   The most detailed description of the data in each CK file is
   provided in metadata included inside the comment area of the file.
   This information can be viewed using the utility program COMMNT
   included in the NAIF Toolkit.
Back to Table of Contents
LSK Files
   LSK (Leapseconds Kernel) files contain the leapseconds and the
   values of other constants required to perform a transformation
   between Universal Time Coordinated (UTC) and Ephemeris time (ET),
   also known as Barycentric Dynamical Time (TDB).
   This archive includes generic text LSK files produced by NAIF,
   containing leapsecond information based on the IERS announcements.
   The generic text LSK version 0012 contains leap second data up to
   and including the January 1, 2017 leapsecond.
   The LSK files are provided under the spice_kernels/lsk
   directory and are named according to the following scheme:
      -  generic text LSKs
               naifVVVV.tls
            where
               VVVV      is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
   The most detailed description of the data in a text LSK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
Back to Table of Contents
SCLK Files
   SCLK (Spacecraft Clock Kernel) files contain on-board clock
   calibration data required to perform a mapping between Ephemeris
   time (ET) and spacecraft on-board time (SCLK).
   This archive includes text SCLK files containing correlation data
   for the main INSIGHT on-board clock, text SCLK files supporting
   INSIGHT Local Mean Solar Time (LMST) to Ephemeris Time conversions,
   and text SCLK files implementing fictitious clock correlations for
   MARCO-A and MARCO-B required to access their CK files.
   The SCLK files are provided under the spice_kernels/sclk
   directory and are named according to the following scheme:
      -  main INSIGHT spacecraft clock SCLK files
               nsy_sclkscet_VVVVV.tsc
            where
               VVVVV     is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
      -  INSIGHT LMST SCLK files
               insight_lmst_opsYYMMDD_vV.tsc
            where
               YYMMDD    is the date consistent with the corresponding
                         landing site position SPK.
               V         is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
      -  MARCO fictitious SCLK files
               marcoS_fake_vVV.tsc
            where
               S         is the spacecraft identifier:
                            a      MARCO-A
                            b      MARCO-B
               VV        is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
   The most detailed description of the data in a text SCLK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
Back to Table of Contents
FK Files
   FK (Frame definitions Kernel) files contain information required to
   define reference frames, sources of frame orientation data and
   connections between these frames and other frames supported within
   the SPICE system. The science instrument frame definitions provided
   in the FK files include mounting alignment information for the
   instruments.
   This archive includes text FK files defining reference frames for
   the INSIGHT lander, its structures, and science instruments, and for
   MARCO-A and MARCO-B spacecraft and their structures and instruments.
   The MARCO-A and MARCO-B FK files also include definitions of structure
   and instrument FOVs. These FKs were produced by NAIF using the
   spacecraft and instrument design documentation as well as actual
   instrument alignment values determined pre-launch and as the result
   of in-flight calibrations.
   The FK files are provided under the spice_kernels/fk
   directory and are named according to the following scheme:
      -  INSIGHT mission FK files
               insight_vVV.tf
            where
               VV        is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
      -  MARCO FK files
               marcoS_vVV.tf
            where
               S         is the spacecraft identifier:
                            a      MARCO-A
                            b      MARCO-B
               VV        is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
   The most detailed description of the data in a text FK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
Back to Table of Contents
MK Files
   Meta-kernel (MK) files (a.k.a 'furnsh' files) provide lists of the
   archived kernels included in this archive suitable for loading into
   a SPICE-based application via the high level SPICE data loader
   routine FURNSH. Using meta-kernels makes it easy to load with
   one call a comprehensive SPICE data collection for a given period.
   The text MK files are provided under the spice_kernels/mk
   directory and are named according to the following scheme:
      -  INSIGHT whole mission MK files
               insight_vVV.tm
            when
               VV        is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions.
   In addition, all meta-kernels also include keywords setting the
   SPICE CHRONOS utility configuration parameters (spacecraft ID,
   planet ID, landing UTC, landing SOL index, and Sun GM).
   Although the meta-kernels were created such that on a UNIX
   workstation they can be loaded into a SPICE-based application
   directly from the directory in which they reside -- because the
   PATH_VALUES keyword is set to '..' and '/' is used as the path
   delimiter -- it is recommended that users make local copies of these
   files and update the PATH_VALUES keyword in each of them to point to
   the actual location of the archive's 'spice_kernels' directory on
   their system. Additional changes including replacing '/' and '\' in
   all path specifications and converting UNIX line terminators to
   terminators native to the user's system may be required to use these
   meta-kernels on non-UNIX workstation.
   The following guidelines were followed to pick and set priority --
   determined by the order in which the kernel files are listed, with
   the latest one taking precedence -- for the kernel files included in
   these meta-kernels:
      -  the latest archived versions of LSK, PCK, and each kind of
         SCLKs, IKs, FKs, SPKs, and CKs (except for IDA and IDC CKs)
         were included
      -  for IDA and IDC CKs, only latest encoder-based CKs were
         included
   Additional description of the kernels sets listed in a text MK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
Back to Table of Contents
Miscellaneous Files
===================
    
   Miscellaneous files provide value added elements that are outside the
   scope of the PDS archive requirements. Miscellaneous files included in 
   this archive are currently limited to checksum files.
   The subsection below provides details for these files.
Back to Table of Contents
Checksum Files
   A checksum file provides a table of MD5 checksums for all files in the 
   archive as of a particular archive (bundle) version, including
   checksums for all previous checksums files and their labels but
   excluding the checksum for the checksum file itself and its label.
   The checksum files are provided under the miscellaneous/checksum
   directory and are named according to the following scheme:
      -  INSIGHT checksum files
               checksum_vVVV.tab
            where
               VVV       is the version; the file with the latest
                         version supersedes all similarly named
                         files with earlier versions and can be
                         used to validate the archive in its
                         entirety.
    
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File Formats
============
   All text documents, checksum files, and other meta information files 
   such as descriptions, detached PDS4 labels, and inventory tables, are 
   stream format files, with a carriage return (ASCII 13) and a line feed 
   character (ASCII 10) at the end of the records. This allows the files 
   to be read by most operating systems.
   The text kernel files in this archive -- LSKs, PCKs, SCLKs, IKs, FKs,
   and MKs -- are UNIX text files, with a line feed character (ASCII 10) 
   at the end of the line, and binary kernel files -- SPKs and CKs -- are 
   IEEE LSB binary files. While data files in this archive can be used 
   'as is' with SPICE toolkits for the majority of supported environments, 
   converting the files to the binary or text format native to the user's 
   computer may be required for use of the data with FORTRAN toolkits on 
   incompatible environments. Refer to the documentation provided with the 
   SPICE Toolkit to find out whether conversion is needed in each specific 
   case.
   NAIF provides a tool (BINGO) that can convert either binary or text
   kernels from one format to another. This means that text files can
   have their line terminator changed and binary files can be converted
   to the native format of the platform of interest. BINGO is available
   from the utilities page at the NAIF Node of the PDS:
      https://naif.jpl.nasa.gov/naif/utilities.html
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SPICE Software and Documentation
================================
   The latest SPICE Toolkit for a variety of computer platforms,
   additional utility programs, documentation, tutorials, and hands-on
   lessons are available at the NAIF Node of the PDS:
      https://naif.jpl.nasa.gov
   specifically:
      Toolkit:   https://naif.jpl.nasa.gov/naif/toolkit.html
      Utilities: https://naif.jpl.nasa.gov/naif/utilities.html
      Tutorials: https://naif.jpl.nasa.gov/naif/tutorials.html
      Lessons:   https://naif.jpl.nasa.gov/naif/lessons.html
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Contact Information
===============================
   PDS Navigation and Ancillary Information Facility (NAIF),
   MAIL STOP 301-121
   Jet Propulsion Laboratory
   California Institute of Technology
   4800 Oak Grove Drive
   Pasadena, CA, 91109-8099
   818-354-8136
   WWW Site: https://naif.jpl.nasa.gov
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Cognizant Persons
=================
   This archive was produced by Boris Semenov and Marc Costa Sitja,
   Planetary Data System Navigation and Ancillary Information
   Facility Node, Jet Propulsion Laboratory, Pasadena, California.
End of INSIGHT SPICE archive description.
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