PDS_VERSION_ID                        = PDS3                                  
RECORD_TYPE                           = FIXED_LENGTH                          
RECORD_BYTES                          = 140                                   
FILE_RECORDS                          = 11                                    
DATA_SET_ID                           = "MGN-V-RSS-1-BSR-V1.0"                
PRODUCT_ID                            = "KEPELEMS.TAB"                        
SPACECRAFT_NAME                       = MAGELLAN                              
INSTRUMENT_ID                         = RSS                                   
TARGET_NAME                           = VENUS                                 
PRODUCT_CREATION_TIME                 = 1996-10-05T00:00:00Z                  
MISSION_PHASE_NAME                    = {"MAPPING CYCLE 5","MAPPING CYCLE 6"} 
ORBIT_NUMBER                          = "N/A"                                 
START_TIME                            = 1993-10-03T13:24:14Z                  
STOP_TIME                             = 1994-06-06T00:27:37Z                  
DSN_STATION_NUMBER                    = {14,43,63}                            
^TABLE                                = "KEPELEMS.TAB"                        
                                                                              
OBJECT                                = TABLE                                 
 INTERCHANGE_FORMAT                   = ASCII                                 
 ROWS                                 = 11                                    
 COLUMNS                              = 7                                     
 ROW_BYTES                            = 140                                   
 ROW_SUFFIX_BYTES                     = 0                                     
 DESCRIPTION                          = "This table contains Keplerian        
    elements for Magellan orbits during which bistatic radar experiments      
    were conducted.  Each row contains 7 columns of data, separated by        
    commas; character fields are enclosed in double quotes.  The data         
    fields occupy 138 bytes; each row is delimited by an ASCII carriage-      
    return line-feed pair."                                                   
 ^TABLE                               = "KEPELEMS.TAB"                        
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 1                                     
  NAME                                = "SEMI-MAJOR AXIS"                     
  DATA_TYPE                           = ASCII_REAL                            
  START_BYTE                          = 1                                     
  BYTES                               = 16                                    
  FORMAT                              = "E16.10"                              
  UNIT                                = "KILOMETER"                           
  DESCRIPTION                         = "The semi-major axis of the orbit."   
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 2                                     
  NAME                                = "ECCENTRICITY"                        
  DATA_TYPE                           = ASCII_REAL                            
  START_BYTE                          = 18                                    
  BYTES                               = 19                                    
  FORMAT                              = "E19.13"                              
  UNIT                                = "N/A"                                 
  DESCRIPTION                         = "The eccentricity of the orbit."      
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 3                                     
  NAME                                = "INCLINATION"                         
  DATA_TYPE                           = ASCII_REAL                            
  START_BYTE                          = 38                                    
  BYTES                               = 17                                    
  FORMAT                              = "E17.11"                              
  UNIT                                = "DEGREE"                              
  DESCRIPTION                         = "The inclination of the orbit."       
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 4                                     
  NAME                                = "LONGITUDE OF ASCENDING NODE"         
  DATA_TYPE                           = ASCII_REAL                            
  START_BYTE                          = 56                                    
  BYTES                               = 18                                    
  FORMAT                              = "E18.12"                              
  UNIT                                = "DEGREE"                              
  DESCRIPTION                         = "The longitude of the ascending node."
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 5                                     
  NAME                                = "ARGUMENT OF PERIAPSIS"               
  DATA_TYPE                           = ASCII_REAL                            
  START_BYTE                          = 75                                    
  BYTES                               = 18                                    
  FORMAT                              = "E18.12"                              
  UNIT                                = "DEGREE"                              
  DESCRIPTION                         = "The argument of periapsis."          
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 6                                     
  NAME                                = "EPOCH"                               
  DATA_TYPE                           = TIME                                  
  START_BYTE                          = 94                                    
  BYTES                               = 23                                    
  UNIT                                = "N/A"                                 
  DESCRIPTION                         = "The date and time at which the       
                                         orbital elements are defined.        
                                         See column 7 for the relationship    
                                         between EPOCH and spacecraft Time    
                                         of Periapsis"                        
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 7                                     
  NAME                                = "SOURCE"                              
  DATA_TYPE                           = CHARACTER                             
  START_BYTE                          = 119                                   
  BYTES                               = 19                                    
  UNIT                                = "N/A"                                 
  DESCRIPTION                         = "The source of the orbital elements   
    and the date on which they were obtained.                                 
                                                                              
    If 'Cavender', the source was Jim Cavender of the Martin Marietta         
    Astronautics Group (Denver) and EPOCH is Time of Descending Node.         
    To obtain Time of Periapsis TPER, calculate                               
                                                                              
         period = sqrt(4.0d+00*pi*pi*axi*axi*axi/mu)                          
         true_anom = (1.8d+02-wper)*pi/1.8d+02                                
         fac1 = sqrt((1.0d+00-ecc)/(1.0d+00+ecc))                             
         ecc_anom = 2.0d+00*datan(fac1*tan(0.5d+00*true_anom))                
         mean_anom = ecc_anom-ecc*sin(ecc_anom)                               
         TPER = EPOCH - mean_anom*period/2.0d+00/pi/8.64d+04                  
                                                                              
    where                                                                     
                                                                              
         axi   is SEMI-MAJOR AXIS                                             
         ecc   is ECCENTRICITY                                                
         pi    is 4*atan(1.)                                                  
         mu    is GM for Venus (0.32485876561687E+06 km^3/kg^2/sec^2)         
         wper  is ARGUMENT OF PERIAPSIS                                       
                                                                              
    and TPER and EPOCH are both expressed in Julian days.                     
                                                                              
    If 'Lyons', the source was Dan Lyons of the Magellan Project (JPL) and    
    EPOCH is time of apoapsis.  To obtain Time of Periapsis  TPER,            
    calculate                                                                 
                                                                              
         period = sqrt(4.0d+00*pi*pi*axi*axi*axi/mu)                          
         TPER = EPOCH - 0.5*period/8.64d+04                                   
                                                                              
    and TPER and EPOCH are both expressed in Julian days.                     
                                                                              
                                                                              
    If 'Lock', the source was Rob Lock of the Magellan Project (JPL) and      
    EPOCH is Time of Periapsis."                                              
                                                                              
 END_OBJECT                           = COLUMN                                
                                                                              
END_OBJECT                            = TABLE                                 
                                                                              
END