PDS_VERSION_ID               = PDS3                                           
RECORD_TYPE                  = FIXED_LENGTH                                   
RECORD_BYTES                 = 2880                                           
FILE_RECORDS                 = 181                                            
^IMAGE                       = ("JOD75C60.IMG",1)                             
INSTRUMENT_HOST_NAME         = "MARS GLOBAL SURVEYOR"                         
TARGET_NAME                  = "MARS"                                         
INSTRUMENT_NAME              = "RADIO SCIENCE SUBSYSTEM"                      
DATA_SET_ID                  = "MGS-M-RSS-5-SDP-V1.0"                         
ORIGINAL_PRODUCT_ID          = "MGS75C.GEOID"                                 
PRODUCT_ID                   = "JOD75C60.IMG"                                 
PRODUCT_RELEASE_DATE         = 1999-12-01                                     
DESCRIPTION                  = "                                              
                                                                              
 This file contains a digital map of the Mars geoid derived from              
 the MGS75C spherical harmonic model of the Mars gravity field.               
 Each point is the Mars geoid height in meters above a reference              
 ellipsoid (semi-major-axis = 3397.0 km, GM = 42828.35796 km**3/s**2,         
 flattening = 5.079304192e-3, and rotation rate = 7.088218081e-5 rad/s).      
                                                                              
 The JOD75C60 geoid is computed from a truncated MGS75C solution (from        
 degree 2 up to degree 60) where 'OD' indicates it is geOid Data, '75C'       
 indicates the MGS75C solution is used, and '60' indicates the maximum        
 degree of the field used to create the map.                                  
                                                                              
 The map is produced by the Mars Global Surveyor Gravity Science Team         
 at JPL under the direction of William L. Sjogren.                            
                                                                              
 NB: START_ORBIT_NUMBER in keywords below is counted from Mars Orbit          
 Insertion in September 1997.  The MGS Project reset its orbit count          
 at the beginning of Mapping in early March 1999; STOP_ORBIT_NUMBER           
 includes the effect of that reset."                                          
                                                                              
START_ORBIT_NUMBER           = 202                                            
STOP_ORBIT_NUMBER            = 2993                                           
START_TIME                   = 1998-03-28T00:00:00                            
STOP_TIME                    = 1999-11-08T14:00:00                            
SOFTWARE_NAME                = "GRVMAP;V1.0"                                  
PRODUCT_CREATION_TIME        = 1999-12-01T00:00:00                            
PRODUCER_ID                  = "MGS GRAVSCI TEAM"                             
                                                                              
OBJECT               = IMAGE                                                  
  LINES                      = 181                                            
  LINE_SAMPLES               = 360                                            
  SAMPLE_TYPE                = "IEEE REAL"                                    
  SAMPLE_BITS                = 64                                             
  UNIT                       = "METERS"                                       
  OFFSET                     = 0.0E+00                                        
  SCALING_FACTOR             = 1.0E+00                                        
  DESCRIPTION                = "The Digital Map contains                      
    values of the geoid.  The values can be obtained                          
    by multiplying the sample in the map by SCALING_FACTOR                    
    and then adding OFFSET."                                                  
END_OBJECT           = IMAGE                                                  
                                                                              
OBJECT               = IMAGE_MAP_PROJECTION                                   
  ^DATA_SET_MAP_PROJECTION     = "DSMAP2.CAT"                                 
  COORDINATE_SYSTEM_TYPE       = "BODY-FIXED ROTATING"                        
  COORDINATE_SYSTEM_NAME       = PLANETOCENTRIC                               
  MAP_PROJECTION_TYPE          = "SIMPLE CYLINDRICAL"                         
  A_AXIS_RADIUS                = 3397.0 <KM>                                  
  B_AXIS_RADIUS                = 3397.0 <KM>                                  
  C_AXIS_RADIUS                = 3397.0 <KM>                                  
  FIRST_STANDARD_PARALLEL      = "N/A"                                        
  SECOND_STANDARD_PARALLEL     = "N/A"                                        
  POSITIVE_LONGITUDE_DIRECTION = "EAST"                                       
  CENTER_LATITUDE              = 0.0 <DEGREES>                                
  CENTER_LONGITUDE             = -0.5 <DEGREES>                               
  REFERENCE_LATITUDE           = 0.0 <DEGREES>                                
  REFERENCE_LONGITUDE          = 0.0 <DEGREES>                                
  LINE_FIRST_PIXEL             = 1                                            
  LINE_LAST_PIXEL              = 181                                          
  SAMPLE_FIRST_PIXEL           = 1                                            
  SAMPLE_LAST_PIXEL            = 360                                          
  MAP_PROJECTION_ROTATION      = 0.0 <DEGREES>                                
  MAP_RESOLUTION               = 1.0E+00                                      
  MAP_SCALE                    = "N/A"                                        
  MAXIMUM_LATITUDE             = 90.0 <DEGREES>                               
  MINIMUM_LATITUDE             = -90.0 <DEGREES>                              
  EASTERNMOST_LONGITUDE        = 179.0 <DEGREES>                              
  WESTERNMOST_LONGITUDE        = -180.0 <DEGREES>                             
  LINE_PROJECTION_OFFSET       = 0.0                                          
  SAMPLE_PROJECTION_OFFSET     = 0.0                                          
END_OBJECT           = IMAGE_MAP_PROJECTION                                   
                                                                              
END