YR/MON/DAY/HOUR     JD      RA(1950),          DEC(1950),      DELTA  DELTADOT    R      RDOT   THETA  BETA  MOON PSANG PSAMV     
     (UT)                          (MIN/HOUR)    (ARCMIN/HOUR)                                                                    
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1987  4  3  0.0 2446888.50 10  1.421(-0.029)  -9 37.73( 0.30)  4.6016  32.2883  5.3981  15.6273 139.2   6.9  92.0  86.2 119.8     
1987  4  4  0.0 2446889.50 10  0.726(-0.029)  -9 30.58( 0.30)  4.6204  32.7617  5.4071  15.6135 138.2   7.1  80.6  87.2 119.7     
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|----------------------------------------------------------------------------------------------------------------|                
| NOTE:  Above ephemerides represent fully-perturbed, light-time-corrected solutions to data spanning 1835-1989  |                
| (cf. the EPHEM.TXT file by D. Yeomans in the DOCUMENT directory).  Ephemerides for HOUR=0.0 UT are directly    |                
| from Yeomans; values within a UT day have been generated using a 7-point interpolation scheme and Yeomans'     |                
| daily (0h UT) values.  The first and last lines in the table span the time interval between the beginning of   |                
| this data directory and the beginning of the next one.                                                         |                
|----------------------------------------------------------------------------------------------------------------|                
                                                                                                                                  
                   DEFINITIONS OF LESS OBVIOUS FIELDS IN THE EPHEMERIS TABLE:                                                     
                                                                                                                                  
THETA = Sun-Earth-Comet angle (degrees)                                                                                           
BETA =  Sun-Comet-Earth angle (degrees)                                                                                           
MOON =  Angular separation of comet and moon (degrees)                                                                            
PSANG = Position angle of prolonged radius vector (degrees, measured from north through east)                                     
PSAMV = Position angle of minus orbital velocity vector (degrees, measured from north through east)                               
                                                                                                                                  
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