PDS_VERSION_ID = PDS3                                                         
                                                                              
RECORD_TYPE    = "STREAM"                                                     
                                                                              
OBJECT     = TEXT                                                             
  PUBLICATION_DATE = 2011-05-17                                               
  NOTE             = "GEOMETRY directory contents"                            
END_OBJECT = TEXT                                                             
                                                                              
END                                                                           
                                                                              
GEOMETRY/ Directory Contents                                                  
============================                                                  
This directory contains a copy of the ephemeric for Comet Halley copied       
from the HAL_0019 volume, with line delimiters added.  It covers a greater    
time span than the observations in this data set, but was easier to work      
with and more likely to be free of typos than a concatenation of the          
ephemeris files covering the range of each LSPN disk individually.            
                                                                              
   ephem.tab     The ephemeris data, in a fixed-width column, blank-delimited 
                 table format                                                 
                                                                              
   ephem.txt     The explanatory information for ephem.tab                    
                                                                              
   geominfo.txt  This file