YR/MON/DAY/HOUR JD RA(1950), DEC(1950), DELTA DELTADOT R RDOT THETA BETA MOON PSANG PSAMV (UT) (MIN/HOUR) (ARCMIN/HOUR) ------------------------------------------------------------------------------------------------------------------------------ 1987 4 18 0.0 2446903.50 9 52.681(-0.019) -7 56.47( 0.26) 4.9092 38.3424 5.5326 15.4245 123.9 8.7 102.1 97.2 118.1 1987 4 19 0.0 2446904.50 9 52.226(-0.019) -7 50.26( 0.26) 4.9314 38.6676 5.5415 15.4113 122.9 8.8 115.3 97.7 117.9 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 ------------------------------------------------------------------------------------------------------------------------------ |----------------------------------------------------------------------------------------------------------------| | 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) ---------------------------------------------------------------------------------------------------------------