PDS_VERSION_ID                   = PDS3                                       
                                                                              
OBJECT                           = DATA_SET                                   
 DATA_SET_ID                     = "EAR-A-5-DDR-DISCOVERY-V2.0"               
  DATA_SET_LOCAL_ID              = "DISCOVER"                                 
                                                                              
  OBJECT                         = DATA_SET_INFORMATION                       
  DATA_SET_NAME                  = "Asteroid Discovery Circumstances V2.0"    
  DATA_SET_COLLECTION_MEMBER_FLG = "N"                                        
  DATA_OBJECT_TYPE               = TABLE                                      
  START_TIME                     = 1801-01-01                                 
  STOP_TIME                      = 1995-02-16                                 
  DATA_SET_RELEASE_DATE          = 1995-03-31  /* Peer Review Date */         
  PRODUCER_FULL_NAME             = "Frederick Pilcher"                        
  DETAILED_CATALOG_FLAG          = "N"                                        
  DATA_SET_DESC                  = "                                          
                                                                              
Data Set Overview                                                             
=================                                                             
                                                                              
This file represents an extension of a file originally prepared by            
Pilcher (1979) for the old Tucson Revised Index of Asteroid Data              
(TRIAD) and updated in Pilcher (1989) for the Asteroids II                    
database.  The data for asteroids numbered 4045 and higher were               
provided by the Minor Planet Center.  Unlike Pilcher's original               
file, this file does not include names and principal provisional              
designations, because they are available in a separate dataset.               
                                                                              
In some cases, an institution or survey is credited with the                  
discovery rather than an individual.                                          
                                                                              
A few of Pilcher's original notes, included here in the NOTE field, refer     
to provisional designations, which, as mentioned above, are not included      
in this file.  They are retained to maintain his numbering sequence.          
                                                                              
Parameters                                                                    
==========                                                                    
                                                                              
This dataset consists of a data table, 'discover.tab', with an entry for      
each numbered asteroid up through 6259.  Each entry includes fields for       
the following parameters.  Asteroid catalog number, date of discovery,        
name of discoverer, discovery location, and a code referring to Pilcher's     
original notes on individual asteroids.                                       
                                                                              
Data                                                                          
====                                                                          
                                                                              
The data are presented in a single ASCII data table, 'discover.tab'.          
                                                                              
Media/Format                                                                  
============                                                                  
                                                                              
This dataset is released in the form of ASCII files which may be stored on    
disk or other magnetic medium and which may be distributed by ftp, email,     
real-time access by remote login, or by whatever means is most convenient.    
                                                                              
"                                                                             
  CONFIDENCE_LEVEL_NOTE          = "                                          
                                                                              
Review                                                                        
======                                                                        
                                                                              
This dataset will undergo a formal external review on March 31, 1995.         
                                                                              
Data Coverage and Quality                                                     
=========================                                                     
                                                                              
This dataset covers all numbered asteroids up through number 6259.            
                                                                              
"                                                                             
 END_OBJECT                      = DATA_SET_INFORMATION                       
                                                                              
 OBJECT                          = DATA_SET_TARGET                            
  TARGET_NAME                    =  "ASTEROID"                                
 END_OBJECT                      = DATA_SET_TARGET                            
                                                                              
 OBJECT                          = DATA_SET_HOST                              
  INSTRUMENT_HOST_ID             = "N/A"                                      
  INSTRUMENT_ID                  = "N/A"                                      
 END_OBJECT                      = DATA_SET_HOST                              
                                                                              
 OBJECT                          = DATA_SET_REFERENCE_INFORMATION             
  REFERENCE_KEY_ID               = "PILCHER1979"                              
 END_OBJECT                      = DATA_SET_REFERENCE_INFORMATION             
                                                                              
 OBJECT                          = DATA_SET_REFERENCE_INFORMATION             
  REFERENCE_KEY_ID               = "PILCHER1989"                              
 END_OBJECT                      = DATA_SET_REFERENCE_INFORMATION             
                                                                              
END_OBJECT                       = DATA_SET                                   
                                                                              
OBJECT                           = REFERENCE                                  
 REFERENCE_KEY_ID                = "PILCHER1979"                              
 REFERENCE_DESC                  = "Pilcher, F. 1979.  Circumstances of       
minor planet discovery.  In Asteroids (T. Gehrels, Ed.), pp.1130-1154.        
Univ. of Arizona Press, Tucson."                                              
END_OBJECT                       = REFERENCE                                  
                                                                              
OBJECT                           = REFERENCE                                  
 REFERENCE_KEY_ID                = "PILCHER1989"                              
 REFERENCE_DESC                  = "Pilcher, F. 1989.  Circumstances of       
minor planet discovery.  In Asteroids II (R. P. Binzel, T. Gehrels, and       
M. S. Matthews, Eds.), pp.1002-1033.  Univ. of Arizona Press, Tucson."        
END_OBJECT                       = REFERENCE                                  
                                                                              
END