PDS_VERSION_ID               = PDS3                                           
                                                                              
/* File Characteristics */                                                    
                                                                              
RECORD_TYPE                  = FIXED_LENGTH                                   
RECORD_BYTES                 = 88                                             
FILE_RECORDS                 = 188                                            
                                                                              
/* Data Object Pointers */                                                    
                                                                              
^TABLE                       = "trom23pr.tab"                                 
                                                                              
/* Identification Keywords */                                                 
                                                                              
DATA_SET_ID                  = "EAR-A-5-DDR-PROPER-ELEMENTS-V1.0"             
PRODUCT_NAME                 = "Proper Elements - Trojan Asteroids"           
PRODUCT_ID                   = "PROPEL-TROM23PR-199703"                       
INSTRUMENT_HOST_NAME         = "N/A"                                          
INSTRUMENT_NAME              = "N/A"                                          
TARGET_NAME                  = ASTEROID                                       
START_TIME                   = "N/A"                                          
STOP_TIME                    = "N/A"                                          
PRODUCT_CREATION_TIME        = 1997-03-24  /*  Peer Review Date  */           
RECORD_FORMAT                = "(i8,2x,a16,1x,i4,1x,f5.4,1x,f6.2,1x,f6.3,1x,  
f5.4,1x,f7.2,1x,f5.4,1x,f7.2,2x,i1,1x,i2)"                                    
                                                                              
/* Data Object Descriptions */                                                
                                                                              
OBJECT                       = TABLE                                          
 ROWS                        = 188                                            
 ROW_BYTES                   = 88                                             
 INTERCHANGE_FORMAT          = ASCII                                          
 COLUMNS                     = 12                                             
 DESCRIPTION                 = "This file (trom23pr.tab) contains the proper  
 elements for 188 Trojan asteroids computed by Milani, version 2.3.  The file 
 trom23err.tab contains the instabilities of the same elements, as computed   
 by the running box test.  See Milani (1993), Celestial Mechanics 57, 59-94,  
 and Milani (1994), 'Asteroids comets Meteors 1993' (Milani, Di Martino and   
 Cellino, Eds., Kluwer) 159-174 for a detailed description of the analysis."  
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 1                                              
  NAME                       = "ASTEROID NUMBER"                              
  DESCRIPTION                = "For numbered asteroids, this number is the    
  asteroid catalog number.  For unnumbered asteroids, a code number is used   
  of the following format.  For survey asteroids, nnnn00ss where nnnn is      
  the survey catalog number and ss is a code for the survey (1=PLS, 2=T1,     
  3=T2, and 4=T4).  For non-survey asteroids, aabbccdd where 19aa is the      
  discovery year, bb and cc encode the two letters of the designation         
  (A=1, B=2, etc.) and dd is the further numeric code.  E.g. 1992 CD4         
  is coded by 92030404."                                                      
  DATA_TYPE                  = ASCII_INTEGER                                  
  START_BYTE                 = 1                                              
  BYTES                      = 8                                              
  FORMAT                     = I8                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 2                                              
  NAME                       = "ASTEROID ALTERNATE DESIGNATION"               
  DESCRIPTION                = "This field contains one or more alternate     
  designations of the asteroid."                                              
  DATA_TYPE                  = CHARACTER                                      
  START_BYTE                 = 11                                             
  BYTES                      = 16                                             
  FORMAT                     = A16                                            
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 3                                              
  NAME                       = "TEMPORARY ID NUMBER"                          
  DESCRIPTION                = "Asteroid temporary ID number."                
  DATA_TYPE                  = ASCII_INTEGER                                  
  START_BYTE                 = 28                                             
  BYTES                      = 4                                              
  FORMAT                     = I4                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 4                                              
  NAME                       = "SEMIMAJOR AXIS AMPLITUDE"                     
  DESCRIPTION                = "Proper amplitude of oscillation in semi-major 
  axis, da, in AU."                                                           
  UNIT                       = "ASTRONOMICAL UNIT"                            
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 33                                             
  BYTES                      = 5                                              
  FORMAT                     = "F5.4"                                         
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 5                                              
  NAME                       = "MEAN LONGITUDE AMPLITUDE"                     
  DESCRIPTION                = "Proper amplitude of oscillation in mean       
  longitude, D, in degrees."                                                  
  UNIT                       = "DEGREE"                                       
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 39                                             
  BYTES                      = 6                                              
  FORMAT                     = "F6.2"                                         
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 6                                              
  NAME                       = "LIBRATION PHASE RATE"                         
  DESCRIPTION                = "Proper rate of libration phase, f, in         
  degrees per year."                                                          
  UNIT                       = "DEGREE PER YEAR"                              
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 46                                             
  BYTES                      = 6                                              
  FORMAT                     = "F6.3"                                         
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 7                                              
  NAME                       = "PROPER ECCENTRICITY"                          
  DESCRIPTION                = "Proper eccentricity, e'."                     
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 53                                             
  BYTES                      = 5                                              
  FORMAT                     = "F5.4"                                         
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 8                                              
  NAME                       = "PERIHELION RATE"                              
  DESCRIPTION                = "Proper rate of perihelion, g, in arcseconds   
  per year."                                                                  
  UNIT                       = "ARCSECOND PER YEAR"                           
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 59                                             
  BYTES                      = 7                                              
  FORMAT                     = "F7.2"                                         
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 9                                              
  NAME                       = "PROPER INCLINATION SINE"                      
  DESCRIPTION                = "Sine of proper inclination, sin(I')."         
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 67                                             
  BYTES                      = 5                                              
  FORMAT                     = "F5.4"                                         
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 10                                             
  NAME                       = "NODE RATE"                                    
  DESCRIPTION                = "Proper rate of node, s, in arcseconds per     
  year."                                                                      
  UNIT                       = "ARCSECOND PER YEAR"                           
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 73                                             
  BYTES                      = 7                                              
  FORMAT                     = "F7.2"                                         
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 11                                             
  NAME                       = "FLAG"                                         
  DESCRIPTION                = "Flag indicating which lagrangean point        
  contains the asteroid in question.  L5 is indicated by '5', and L4 is       
  indicated by '4'."                                                          
  DATA_TYPE                  = ASCII_INTEGER                                  
  START_BYTE                 = 82                                             
  BYTES                      = 1                                              
  FORMAT                     = I1                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 12                                             
  NAME                       = "INTEGRATION TIME SPAN"                        
  DESCRIPTION                = "Time span of the numerical integration,       
  in millions of years."                                                      
  UNIT                       = "MY"                                           
  DATA_TYPE                  = ASCII_INTEGER                                  
  START_BYTE                 = 84                                             
  BYTES                      = 2                                              
  FORMAT                     = I2                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
END_OBJECT                   = TABLE                                          
END