PDS_VERSION_ID                     = PDS3                                     
RECORD_TYPE                        = STREAM                                   
                                                                              
OBJECT                             = TEXT                                     
   PUBLICATION_DATE                = 2012-06-20  /* Label Generated */        
   NOTE                            = "Description of the contents of the      
        document directory."                                                  
END_OBJECT                         = TEXT                                     
END                                                                           
                                                                              
"document" Directory Contents                                                 
                                                                              
The document directory contains documentation files, where available, for the 
data set in this volume.  All document files will have an accompanying label  
file to describe content and structure.  Label files have the same name as the
main document file, with an extension of ".lbl".                              
                                                                              
docinfo.txt -  The file you are reading.                                      
                                                                              
ads.asc -  This is an internal file of bibliographic information to be sent by
        PDS to the Abstract Data Service (ADS) to list this data set in their 
        service.  This file is not intended to be useful to data users.       
                                                                              
ads.lbl -  The label for ads.asc.                                             
                                                                              
                                                                              
allnum_pro.asc -  "M&K Analytic Proper Elements of Numbered Asteroids", This  
        file contains analytic proper elements of numbered asteroids          
        calculated by Milani and Knezevic using a semianalytical method       
        described in Milani and Knezevic (1994).  Along with the corresponding
        file of proper elements for unnumbered asteroids, this file was the   
        input to the Nesvorny HCM program hcluster.c in producing the 64      
        families from analytic proper elements in this data set.  In order to 
        be used as input to hcluster.c, this file must be renamed from        
        'allnum_pro.asc' to 'allnum.pro'.                                     
                                                                              
allnum_pro.lbl - The label file for the document "M&K Analytic Proper Elements
        of Numbered Asteroids" described above.                               
                                                                              
hcluster_c.asc -  "HCM Families Program for Analytic Proper Elements",        
        Hierarchical Clustering Method (HCM) code of David Nesvorny, which was
        used to generate the 64 asteroid families of this data set based on   
        analytic proper elements.  To use the code, the filename must be      
        changed from 'hcluster_c.asc' to 'hcluster.c'.                        
                                                                              
hcluster_c.lbl - The label file for the document "HCM Families Program for    
        Analytic Proper Elements" described above.                            
                                                                              
hcluster_syn_c.asc -  "HCM Families Program for Synthetic Proper Elements",   
        Hierarchical Clustering Method (HCM) code of David Nesvorny, which was
        used to generate the 79 asteroid families from synthetic proper       
        elements of this data set.  To use the code, the filename must be     
        changed from 'hcluster_syn_c.asc' to 'hcluster_syn.c'.                
                                                                              
hcluster_syn_c.lbl - The label file for the document "HCM Families Program for
        Synthetic Proper Elements" described above.                           
                                                                              
nrutil_c.asc -  "Memory Allocation Functions for HCM Code", This file includes
        memory allocation functions and is used, along with nrutil.h, in      
        compiling hcluster.c.  To use it, rename to nrutil.c.                 
                                                                              
nrutil_c.lbl - The label file for the document "Memory Allocation Functions   
        for HCM Code" described above.                                        
                                                                              
nrutil_h.asc -  "Memory Allocation Functions Header", This file contains the  
        header for nrutil.c and is used with it in compiling the HCM code     
        hcluster.c.  To use, rename to nrutil.h.                              
                                                                              
nrutil_h.lbl - The label file for the document "Memory Allocation Functions   
        Header" described above.                                              
                                                                              
numb_syn.asc -  "Knezevic Synthetic Proper Elements of Numbered Asteroids",   
        This file contains synthetic proper elements of numbered asteroids    
        calculated by Knezevic using the method described in Knezevic et al.  
        (2002).  This file was the input to the Nesvorny HCM program          
        hcluster_syn.c in producing the 79 families from synthetic proper     
        elements in this data set.  In order to be used as input to           
        hcluster_syn.c, this file must be renamed from 'numb_syn.asc' to      
        'numb.syn'.                                                           
                                                                              
numb_syn.lbl - The label file for the document "Knezevic Synthetic Proper     
        Elements of Numbered Asteroids" described above.                      
                                                                              
ufitobs_pro.asc -  "M&K Analytic Proper Elements of Unnumbered Asteroids",    
        This file contains analytic proper elements of unnumbered asteroids   
        calculated by Milani and Knezevic using a semianalytical method       
        described in Milani and Knezevic (1994).  Along with the corresponding
        file of proper elements for numbered asteroids, this file was the     
        input to the Nesvorny HCM program hcluster.c in producing the 64      
        families from analytic proper elements in this data set.  In order to 
        be used as input to hcluster.c, this file must be renamed from        
        'ufitobs_pro.asc' to 'ufitobs.pro'.                                   
                                                                              
ufitobs_pro.lbl - The label file for the document "M&K Analytic Proper        
        Elements of Unnumbered Asteroids" described above.