PDS_VERSION_ID                    = PDS3                              
LABEL_REVISION_NOTE               = "R.A. SIMPSON, 2000-04-24"        
RECORD_TYPE                       = FIXED_LENGTH                      
RECORD_BYTES                      = 72                                
                                                                      
OBJECT                            = DATA_SET_MAP_PROJECTION           
 DATA_SET_ID                      = "CLEM1-L-RSS-5-BSR-V1.0"          
 OBJECT                           = DATA_SET_MAP_PROJECTION_INFO      
  MAP_PROJECTION_TYPE             = "SOUTH POLAR ORTHOGRAPHIC"        
  MAP_PROJECTION_DESC             = "                                 
                                                                      
    In the south polar orthographic projection [SNYDER1987], parallels
    of latitude are concentric circles, and meridians of longitude are
    straight radial lines that intersect the circles at right angles  
    and intersect each other at the pole.                             
                                                                      
    Images in this projection are centered on the south pole.  Map    
    resolution in latitude decreases toward the equator as surface    
    elements are tilted away from the observer.                       
                                                                      
    The transformation from positive north latitude and positive east 
    longitude (LAT, LON) to LINE and SAMPLE is given by the following 
    equations for a spherical planet.                                 
                                                                      
    R = A_AXIS_RADIUS = B_AXIS_RADIUS = C_AXIS_RADIUS                 
                                                                      
    LINE =   LINE_PROJECTION_OFFSET + 1+R*COS(LAT)*COS(LON)/MAP_SCALE 
                                                                      
    SAMPLE = SAMPLE_PROJECTION_OFFSET+1+R*COS(LAT)*SIN(LON)/MAP_SCALE 
                                                                      
    In the above definitions, integral values of LINE and SAMPLE      
    correspond to the center of a pixel.  The top left image pixel    
    has LINE=1 and SAMPLE=1 but is not defined in (LAT,LON).          
                                                                      
    LINE_PROJECTION_OFFSET                                            
      is the image line number minus one on which the map projection  
      origin occurs.  The map projection origin is the South Pole.    
                                                                      
    SAMPLE_PROJECTION_OFFSET                                          
      is the sample number minus one on which the map projection      
      origin occurs.  The map projection origin is the South Pole.    
                                                                      
    A_AXIS_RADIUS, B_AXIS_RADIUS, and C_AXIS_RADIUS                   
      are the semimajor, intermediate, and semiminor axes             
      (respectively) of the ellipsoid defining the approximate        
      shape of the body in kilometers.                                
                                                                      
    MAP_SCALE                                                         
      is in kilometers per pixel at the projection origin."           
                                                                      
  ROTATIONAL_ELEMENT_DESC         = "See [DAVIESETAL1995]."           
                                                                      
  OBJECT                          = DS_MAP_PROJECTION_REF_INFO        
   REFERENCE_KEY_ID               = "DAVIESETAL1995"                  
  END_OBJECT                      = DS_MAP_PROJECTION_REF_INFO        
  OBJECT                          = DS_MAP_PROJECTION_REF_INFO        
   REFERENCE_KEY_ID               = "SNYDER1987"                      
  END_OBJECT                      = DS_MAP_PROJECTION_REF_INFO        
 END_OBJECT                       = DATA_SET_MAP_PROJECTION_INFO      
END_OBJECT                        = DATA_SET_MAP_PROJECTION           
END