PDS_VERSION_ID      = PDS3                                                    
RECORD_TYPE         = FIXED_LENGTH                                            
RECORD_BYTES        = 80                                                      
OBJECT              = TEXT                                                    
  PUBLICATION_DATE    = 1999-08-15                                            
  NOTE                = "Description of contents of CATALOG directory "       
END_OBJECT          = TEXT                                                    
END                                                                           
                                                                              
                                                                              
                                                                              
           Content Description of the CATALOG Subdirectory                    
                                                                              
                                                                              
                                                                              
     The CATALOG subdirectory on this CD-ROM volume contains the completed    
catalog objects associated with the MGS Accelerometer data set.  These        
objects contain high-level descriptions of the data set.  Each catalog object 
is in ASCII, with a maximum of 78 characters per line.  Each line is delimited
with a carriage-return (ASCII 13) line-feed (ASCII 10) pair.                  
                                                                              
Following is a list of the catalog objects contained in this subdirectory and 
a description of each:                                                        
                                                                              
                                                                              
MISSION.CAT                                                                   
                                                                              
     A brief description of the mission.  It includes a chronology of events, 
definition of mission phases, and science objectives.                         
                                                                              
                                                                              
INSTHOST.CAT                                                                  
                                                                              
     A description of the Mars Global Surveyor spacecraft.                    
                                                                              
                                                                              
INST.CAT                                                                      
                                                                              
     An overview of the accelerometer system used for these experiments on    
Mars Global Surveyor.                                                         
                                                                              
                                                                              
REF.CAT                                                                       
                                                                              
     A listing of references used elsewhere in the catalog files and of       
references that might be generally useful in working with these data.         
                                                                              
                                                                              
PERSON.CAT                                                                    
                                                                              
     A listing of key people involved in analyzing the data and in            
producing the archival data set.                                              
                                                                              
                                                                              
DATASET.CAT                                                                   
                                                                              
     A description of the data set contained in the archival volume.  The     
file includes information on the primary data types included in the archive   
collection.  Brief discussions of the quality of the data are included where  
a judgment can be made.