PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  PUBLICATION_DATE    = 2016-01-19                                            
  NOTE                = "GEOMINFO.TXT describes the files which reside in     
                         the GEOMETRY directory on this volume."              
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              
                                                                              
The GEOMETRY directory contains copies of the VIR SPICE metakernel (TM)       
files. TM files are SPICE text kernels that list the SPICE kernels that were  
used in data processing and in the calculation of the geometry parameters     
contained in the data label files. With the exceptions indicated below the    
SPICE kernels listed in the TM files are archived at the PDS-NAIF node with   
the same file names indicated in the TM file. Each TM file is accompanied by  
a PDS label file.                                                             
                                                                              
The GEOMETRY directory contains the following MK files:                       
                                                                              
   Metakernel        Dawn Mission Phase                                       
   ---------------   -----------------------------                            
   DAWN_CSA_R02.TM   CERES SCIENCE APPROACH (CSA)                             
   DAWN_CSR_R02.TM   CERES SCIENCE RC3 (CSR)                                  
                                                                              
NAIF SPICE Archive Metakernel Exceptions                                      
----------------------------------------                                      
 - DAWN SPICE data set does not yet include DSK files. DSKs will be added to  
   the archive and will include the DSK SHAPE_SPC150828_512.bds. However,     
   this DSK file will most likely be renamed to have all lowercase name and   
   have the dawn_ceres_ prefix instead of the SHAPE_ prefix. The original     
   name of  the file will be reflected in the DESCRIPTION keyword in the file 
   label as is done for all kernels for the which the operational name had to 
   be changed for the archive.                                                
                                                                              
 - The current SPICE toolkit (N0065) cannot load MKs listing DSKs as this     
   toolkit does not yet incorporate the DSK subsystem. Any N0065 or either    
   SPICE-based program given an MK with DSK will generate the                 
   "SPICE(UNKNOWNKERNELTYPE)" error.                                          
                                                                              
 - Some of the operations kernels listed in the MKs have non-PDS compliant    
   names and are renamed for inclusion in the SPICE archive. Specifically     
   these kernels are SCLKs and s/c SPKs that are renamed as follows:          
      DAWN_203_SCLKSCET.00060.tsc -> dawn_203_sclkscet_00060.tsc,             
      dawn_rec_141230-150509_150603_v1.bsp ->                                 
         dawn_rec_141230_150509_150603_v1.bsp.