=============================================================================   
Rosetta FK Files                                                                
=============================================================================   
                                                                                                                                                               
  This "aareadme.txt" file describes the contents of the KERNELS/FK directory   
  of the ROSETTA SPICE data server. It also provides the file naming            
  conventions used for the ROSETTA FK kernels, and it provides identification   
  of the most current version of each kind of FK file.                          
                                                                                
  All these FK files are produced manually  with the information supplied by    
  Rosetta teams describing the frames for the spacecraft and its science        
  instruments. Some of these FK files (for tracking stations) are provided      
  specifically for the Radio Science investigation.                             
                                                                                
  All FK files (*.TF) contained in this directory are unix text                 
  files. These may be used in a non-compatible text environment by using the    
  ASCII mode of FTP to port the files. [Ref 2a]                                 
                                                                                
  Contact Marc Costa Sitja (mcosta@sciops.esa.int) or the ESA SPICE Service 
  (esa_spice@sciops.esa.int) if you have any questions.                              
      

=============================================================================   
References                                                                      
=============================================================================   
                                                                                
  1. Frames Required Reading. NAIF Document available at                        
     http://naif.jpl.nasa.gov                                                   
                                                                                
  2. NAIF IDs Required Reading. NAIF Document available at                      
     http://naif.jpl.nasa.gov                                                   
                            

=============================================================================   
Rosetta FK Directory Structure                                                  
=============================================================================   

  aareadme.txt        Text file describing the directory structure, the naming  
                      conventions for the FK, and the current version(s) of     
                      each FK type.                                             
                                                                                
  former_versions     Subdirectory that contains obsolete versions of the FK    
                      files that have been updated in the Current FK Kernel     
                      Set.                                                      
                           

=============================================================================   
Rosetta Frame Kernel Naming Convention                         ROS_Vxx.TF       
=============================================================================   
                                                                                
      token           description                                               
      ---------       -------------------------------------------------------   
      xx              Version Number                                            
    

=============================================================================   
DSN Stations Frame Kernel Naming Convention             EARTH_TOPO_yymmdd.TF    
=============================================================================   
                                                                                
      token           description                                               
      ---------       -------------------------------------------------------   
      yymmdd          Release date.                                             
                                                                                
                                                                                
=============================================================================   
ESA Generic Frame Definition Kernel Naming Convention            RSSDxxxx.TF    
=============================================================================   
                                                                                
       token        description                                                 
       ---------    -------------------------------------------------------     
       xxxx         Version number. This is the standard naming convention      
                    for ESA generic frame definitions kernel.                   
                                                                                
                                                                                
=============================================================================   
Current FK Kernels Set                                                          
=============================================================================   
                                                                                
  Name                     Comments                                             
  ------------------       -----------------------------------------------------
  EARTH_TOPO_yymmdd.TF     FK kernel for the topocentric reference frames for  
                           the Deep Space Network (DSN) stations. This kernel 
                           was released on the date indicated in the filename
                           yy-mm-dd.                               
                                                                               
  EARTHFIXEDIAU.TF         This kernel makes the IAU_EARTH frame coincide with 
                           the earth fixed reference frame.                    
                                                                               
  EARTHFIXEDITRF93.TF      This kernel makes the ITRF93 frame coincide with the
                           earth fixed reference frame.                        
                                                                               
  ESTRACK_Vvv.TF           This kernel defines a topocentric reference frame 
                           for each of the ESA ESTRACK ground stations.            
                                                                               
  NEW_NORCIA_TOPO.TF       FK kernel for the topocentric reference frame 
                           for the ESA 35m tracking antenna at New 
                           Norcia.             
                                                                               
  ROS_CGS_AUX_Vvv.TF       Auxiliary frames needed for ROVIZ internal 
                           computations.
                                                                               
  ROS_Vxx.TF               FK containing the complete set of frame 
                           definitions for the Rosetta Spacecraft (ROS) 
                           and Rosetta Lander (ROS_LANDER) including 
                           definitions for the Rosetta spacecraft and 
                           Rosetta science instrument frames and Rosetta 
                           Lander fixed, Rosetta Lander instrument, and 
                           landing site local frames. This FK is also a 
                           SCLK kernel that provides the definition of 
                           the 67P/C-G_CK comet frame. Please note that 
                           this frame is to be used with a CATT file 
                           providing orientation or the beforementioned 
                           frame. This kernel also contains NAIF ID/name 
                           mapping for the Rosetta instruments and 
                           targets (asteroids and comet).  
                                                                               
  RSSDvvvv.TF              FK kernel defining a number of mission independent  
                           frames that could be used by any of the users of any
                           of the ESA planetary missions and that are not      
                           ``built'' in the SPICE toolkit.                     
                                                                               
  ROS_LUTETIA_RSOC_Vvv.TF  FK that contains the definition of a body-fixed 
                           frame for Lutetia, whose primary meridian is 
                           chosen to contain a given feature on the surface 
                           of the asteroid, and its Z axis is its rotational 
                           axis.                
                                                                               
  ROS_CHURYUMOV_Vvv.TF     FK and SCLK kernel that provide the definition of 
                           the 67P/C-G_CK comet frame. Please note that this 
                           frame is to be used with a CATT file providing 
                           orientation for the aforementioned frame. This 
                           kernel is deprecated by the latest version of 
                           ROS_Vxx.TF

  ROS_DSK_SURFACES_Vvv.TF  FK containing Surface definitions for the
                           additional DSKs added requested by the OSIRIS
			   team: Phobos, Deimos and Tempel 1.

                                                                    
-------------------                                                            
                                                                                
        This file was last modified on Jun 26, 2019 (B. Grieger).


End of aareadme file.
