ALBEDO

                                                                                
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
ALBEDO  2                                                                       
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
                                                                                
COLUMNS FORMAT         DESCRIPTION                         DEFAULT VALUE & UNITS
                                                                                
1-6     A6        ALBEDO - Requests application of earth                        
                  or other planet radiation pressure                            
                                                                                
7-8     I2        # of rings                                  2                 
                                                                                
9-10    I2        Model indicator                             0                 
                                                                                
                  0 = default                                                   
                  1 = model provided below [Note 3]                             
                                                                                
25-44   D20.8     ALBEDO constant [Note 2]                                      
                                                                                
45-59   D15.3     Emissivity constant [Note 2]                                  
                                                                                
                                                                                
                                                                                
                                                                                
NOTE [1] : Solar radiation must be turned on when using ALBEDO.                 
                                                                                
NOTE [2] : If the albedo constant is zero, then the spherical                   
           harmonic albedo Earth model (currently zeroeth first                 
           and second degree zonal harmonics) will be used.                     
           If the emissivity constant is zero, then the spherical               
           harmonic emissivity model (same as above) will be used.              
                                                                                
NOTE [3] : For an example setup of this case look at the ALTIME card.           
                                                                                
                                                                                
IF CARD OMITTED: Earth radiation pressure will not be applied.

MAY 1995

9505.0

ARC SET - Option Cards



Patrick Dahiroc
1998-09-10