PDS_VERSION_ID               = PDS3                                           
                                                                              
/* File Characteristics */                                                    
                                                                              
RECORD_TYPE                  = FIXED_LENGTH                                   
RECORD_BYTES                 = 80                                             
FILE_RECORDS                 = 130                                            
                                                                              
/* Data Object Pointers */                                                    
                                                                              
^TABLE                       = "RADAR.TAB"                                    
                                                                              
/* Identification Keywords */                                                 
                                                                              
DATA_SET_ID                  = "EAR-A-5-DDR-RADAR-V6.0"                       
PRODUCT_NAME                 = "Asteroid Radar Detections"                    
PRODUCT_ID                   = "RADAR-RADAR-199904"                           
INSTRUMENT_HOST_NAME         = "N/A"                                          
INSTRUMENT_NAME              = "N/A"                                          
TARGET_NAME                  = ASTEROID                                       
START_TIME                   = 1968                                           
STOP_TIME                    = 1998                                           
PRODUCT_CREATION_TIME        = 1999-04-09  /* Peer Review Date */             
RECORD_FORMAT                = "(I5,1X,A10,A3,1X,E7.1,1X,E7.1,1X,             
F4.2,2X,F4.2,1X,F4.2,1X,F4.2,1X,I4,1X,I4,1X,A8)"                              
                                                                              
/* Data Object Description */                                                 
                                                                              
OBJECT                       = TABLE                                          
 ROWS                        = 130                                            
 ROW_BYTES                   = 80                                             
 INTERCHANGE_FORMAT          = ASCII                                          
 COLUMNS                     = 12                                             
 DESCRIPTION                 = "Compilation of radar observations of          
asteroids.  The list of asteroid detections was provided by S. J. Ostro, JPL."
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 1                                              
  NAME                       = "ASTEROID ID"                                  
  DESCRIPTION                = "Asteroid number."                             
  DATA_TYPE                  = ASCII_INTEGER                                  
  START_BYTE                 = 1                                              
  BYTES                      = 5                                              
  FORMAT                     = I5                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 2                                              
  NAME                       = "ASTEROID PRELIMINARY DESIGNATION"             
  DESCRIPTION                = "Asteroid preliminary designation."            
  DATA_TYPE                  = CHARACTER                                      
  START_BYTE                 = 7                                              
  BYTES                      = 10                                             
  FORMAT                     = A10                                            
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 3                                              
  NAME                       = "CROSS SECTION FLAG"                           
  DESCRIPTION                = "The presence of a '> =' in this column        
indicates that the radar cross section in the next column is a lower          
limit."                                                                       
  DATA_TYPE                  = CHARACTER                                      
  START_BYTE                 = 17                                             
  BYTES                      = 3                                              
  FORMAT                     = A3                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 4                                              
  NAME                       = "RADAR CROSS SECTION"                          
  DESCRIPTION                = "Radar cross section of asteroid."             
  UNIT                       = "SQUARE KILOMETERS"                            
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 21                                             
  BYTES                      = 7                                              
  FORMAT                     = "E7.1"                                         
  MISSING_CONSTANT           = 9.9E+99                                        
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 5                                              
  NAME                       = "RADAR CROSS SECTION UNCERTAINTY"              
  DESCRIPTION                = "Uncertainty in radar cross section."          
  UNIT                       = "SQUARE KILOMETERS"                            
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 29                                             
  BYTES                      = 7                                              
  FORMAT                     = "E7.1"                                         
  MISSING_CONSTANT           = 9.9E+99                                        
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 6                                              
  NAME                       = "CIRCULAR POLARIZATION RATIO"                  
  DESCRIPTION                = "Circular polarization ratio, SC/OC ('same     
  circular over opposite circular')."                                         
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 37                                             
  BYTES                      = 4                                              
  FORMAT                     = "F4.2"                                         
  MISSING_CONSTANT           = 9.99                                           
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 7                                              
  NAME                       = "CIRCULAR POLARIZATION UNCERTAINTY"            
  DESCRIPTION                = "Uncertainty in the circular                   
                                polarization ratio."                          
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 43                                             
  BYTES                      = 4                                              
  FORMAT                     = "F4.2"                                         
  MISSING_CONSTANT           = 9.99                                           
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 8                                              
  NAME                       = "RADAR ALBEDO"                                 
  DESCRIPTION                = "The radar albedo is the ratio of the radar    
  cross section to the geometric cross-sectional area of the asteroid. The    
  most usual source of the asteroid's geometric size for the albedos          
  quoted here are infrared radiometry and occultation measurements.  A few    
  are calculated from assumptions about the geometric albedo given the        
  taxonomic class of the asteroid.  To determine the source of the asteroid   
  diameter used in calculating the albedo in a particular case, consult the   
  original paper."                                                            
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 48                                             
  BYTES                      = 4                                              
  FORMAT                     = "F4.2"                                         
  MISSING_CONSTANT           = 9.99                                           
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 9                                              
  NAME                       = "RADAR ALBEDO UNCERTAINTY"                     
  DESCRIPTION                = "Uncertainty in the radar albedo."             
  DATA_TYPE                  = ASCII_REAL                                     
  START_BYTE                 = 53                                             
  BYTES                      = 4                                              
  FORMAT                     = "F4.2"                                         
  MISSING_CONSTANT           = 9.99                                           
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 10                                             
  NAME                       = "TRANSMITTER FREQUENCY"                        
  DESCRIPTION                = "Transmitter frequency in MHz."                
  UNIT                       = "MEGAHERTZ"                                    
  DATA_TYPE                  = ASCII_INTEGER                                  
  START_BYTE                 = 58                                             
  BYTES                      = 4                                              
  FORMAT                     = I4                                             
  MISSING_CONSTANT           = -999                                           
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 11                                             
  NAME                       = "OBSERVATION YEAR"                             
  DESCRIPTION                = "Year of observation."                         
  DATA_TYPE                  = ASCII_INTEGER                                  
  START_BYTE                 = 63                                             
  BYTES                      = 4                                              
  FORMAT                     = I4                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
 OBJECT                      = COLUMN                                         
  COLUMN_NUMBER              = 12                                             
  NAME                       = "REFERENCE CODE"                               
  DESCRIPTION                = "This code refers to the references given      
in the file 'radarref.tab'.  A code between 80 and 89 inclusive refers to     
observations reported in an abstract only.  A code between 90 and 99          
inclusive refers to observations which have not yet been published.  In       
each of these two cases, an entry appears in the data set for completeness,   
but no data are included.                                                     
"                                                                             
  DATA_TYPE                  = CHARACTER                                      
  START_BYTE                 = 68                                             
  BYTES                      = 8                                              
  FORMAT                     = A8                                             
 END_OBJECT                  = COLUMN                                         
                                                                              
END_OBJECT                   = TABLE                                          
END