PDS_VERSION_ID = PDS3                                                         
                                                                              
RECORD_TYPE   = FIXED_LENGTH                                                  
RECORD_BYTES  = 80                                                            
FILE_NAME     = "docinfo.txt"                                                 
FILE_RECORDS  = 51                                                            
LABEL_RECORDS = 10                                                            
DESCRIPTION   = "This is the document directory information file for the      
  SBN On-line Asteroid Catalog holdings delivery volume."                     
END                                                                           
____________________________________________________________________________  
                                                                              
This directory contains the documentation files associated with the PDS/SBN   
special collection of Ida/Gaspra observations. The principal contents are     
files containing information supplied with the various data files comprising  
the Ida and Gaspra observations made by the Galileo magnetometer.             
                                                                              
A local copy of the data dictionary, which refers only to the files on this   
disk, is also provided in this directory, along with an index.  The relevant  
files are:                                                                    
                                                                              
  lcldd.full        The object and element definitions, in the same format    
                    as the full 'psdd' file.                                  
  lcldd.idx         The index file generated by the PDS 'make_index' tool     
  ddnew.txt         A file listing the new objects, elements and standard     
                    values appearing in labels on this disk.  These new       
                    additions are not yet in the official version of the      
                    PSDD as of the time of preparation of this dictionary     
                    (13 June 2001).                                           
                                                                              
Note that the lcldd.full file does not at this point contain the full         
proposed definitions of any new objects or elements.                          
                                                                              
                                                                              
DIRECTORY CONTENTS                                                            
------------------                                                            
                                                                              
The following files are provided to document the magnetometer data. Each      
is accompanied by a label with the same filename but an extension of ".lbl":  
                                                                              
   Documentation File    Describes                                            
   ------------------    ---------                                            
   maggasbr.doc          Gaspra browse data                                   
   maggashr.doc          Gaspra high-resolution data                          
   maggastd.doc          Gaspra trajectory data                               
   magidabr.doc          Ida browse data                                      
   magidahr.doc          Ida high-resolution data                             
   magidatd.doc          Ida trajectory data                                  
                                                                              
============================================================================  
Anne Raugh, 12 June 2001.