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 20  0.0 2446905.50  9 51.786(-0.018)  -7 44.12( 0.25)  4.9538  38.9831  5.5504  15.3981 121.9   8.8 128.1  98.3 117.7     
1987  4 21  0.0 2446906.50  9 51.362(-0.017)  -7 38.06( 0.25)  4.9764  39.2888  5.5593  15.3850 120.9   8.9 140.2  98.8 117.5     
1987  4 22  0.0 2446907.50  9 50.953(-0.017)  -7 32.08( 0.25)  4.9992  39.5846  5.5681  15.3719 119.9   9.0 150.6  99.3 117.3     
1987  4 23  0.0 2446908.50  9 50.559(-0.016)  -7 26.18( 0.24)  5.0221  39.8703  5.5770  15.3588 118.8   9.1 156.9  99.8 117.1     
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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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