KPL/FK

Trace Gas Orbiter (TGO) Spacecraft Frames Kernel
===============================================================================

   This frame kernel contains complete set of frame definitions for the
   ExoMars-16 Trace Gas Orbiter Spacecraft (TGO) including definitions for 
   the TGO structures and TGO science instrument frames. This kernel also 
   contains NAIF ID/name mapping for the TGO instruments.


Version and Date
------------------------------------------------------------------------

   Version 0.1 -- January 26, 2016 --  Jorge Diaz del Rio, ODC Space

      Preliminary Version. Added TGO_SPACECRAFT frame for its use with
      test CK kernel.

   Version 0.0 -- December 17, 2015 -- Jorge Diaz del Rio, ODC Space

      Preliminary Version. Only TGO Name to NAIF ID mappings for their
      use with test SPK kernel.


References
------------------------------------------------------------------------

   1. ``Frames Required Reading'', NAIF 

   2. ``Kernel Pool Required Reading'', NAIF 

   3. ``C-Kernel Required Reading'', NAIF 


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
      
     
Implementation Notes
------------------------------------------------------------------------

   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. The SPICE routine FURNSH loads a kernel file
   into the pool as shown below.

      CALL FURNSH ( 'frame_kernel_name; )    -- FORTRAN
      furnsh_c ( "frame_kernel_name" );      -- C
      cspice_furnsh, frame_kernel_name       -- IDL
      cspice_furnsh( 'frame_kernel_name' )   -- MATLAB

   This file was created and may be updated with a text editor or word
   processor.

   
TGO NAIF ID Codes -- Summary Section
------------------------------------------------------------------------

   The following names and NAIF ID codes are assigned to the TGO spacecraft,
   its structures and science instruments (the keywords implementing these
   definitions are located in the section "TGO NAIF ID Codes -- Definition
   Section" at the end of this file):
   
   TGO Spacecraft and Spacecraft Structures names/IDs:

            TGO                      -143     (synonym: EXOMARS-ORBITER)


TGO Frames
------------------------------------------------------------------------

   The following TGO frames are defined in this kernel file:

           Name                  Relative to           Type        NAIF ID
      ======================  ===================  ============    =======

   TGO Spacecraft and Spacecraft Structures frames:
   ------------------------------------------------
      TGO_SPACECRAFT          J2000                CK              -143000




TGO Spacecraft and Spacecraft Structures Frames
------------------------------------------------------------------------

   This section of the file contains the definitions of the spacecraft
   and spacecraft structures frames.


TGO Spacecraft Frames
--------------------------------------

   According to [TBD] the TGO spacecraft frame is defined as
   follows:

      -  +Z axis is perpendicular to the launch vehicle interface plane
         and points toward the payload side; representing the spacecraft
         line of sight toward Mars during science operations;

      -  +X axis is perpendicular to the antenna mounting plane and points
         toward the antenna;

      -  +Y axis completes the right-handed frame.

      -  the origin of this frame is the launch vehicle interface point.


   These diagrams illustrate the TGO_SPACECRAFT frame:

   +X s/c side view:
   ----------------------------- 

      TBD

   +Z s/c side view:
   -----------------

      TBD


   Since the orientation of the TGO_SPACECRAFT frame is computed
   on-board, sent down in telemetry, and stored in the s/c CK files, it
   is defined as a CK-based frame.

   \begindata

      FRAME_TGO_SPACECRAFT             = -143000
      FRAME_-143000_NAME               = 'TGO_SPACECRAFT'
      FRAME_-143000_CLASS              =  3
      FRAME_-143000_CLASS_ID           = -143000
      FRAME_-143000_CENTER             = -143
      CK_-143000_SCLK                  = -143
      CK_-143000_SPK                   = -143
      OBJECT_-143_FRAME                = 'TGO_SPACECRAFT'

   \begintext


TGO NAIF ID Codes -- Definitions
===============================================================================

   This section contains name to NAIF ID mappings for the ExoMars-16 mission.
   Once the contents of this file is loaded into the KERNEL POOL, these
   mappings become available within SPICE, making it possible to use names
   instead of ID code in the high level SPICE routine calls.

      Name                   ID       Synonyms
      ---------------------  -------  -----------------------

   Spacecraft:
   -----------
      TGO                    -143     EXOMARS-ORBITER

      TGO_SPACECRAFT         -143000

      
   The mappings summarized in this table are implemented by the keywords
   below.

  \begindata

      NAIF_BODY_NAME += ( 'TGO'                         )
      NAIF_BODY_CODE += ( -143                          )
      
      NAIF_BODY_NAME += ( 'EXOMARS-ORBITER'             )
      NAIF_BODY_CODE += ( -143                          )

      NAIF_BODY_NAME += ( 'TGO_SPACECRAFT'              )      
      NAIF_BODY_CODE += ( -143000                       )

  \begintext