Williams (C/1998 P1)  1999
Date       RA            declination    r      delta   mag Elong
----       --            -----------    -      -----   --- -----
 1 Jan   12h47m41.06s  -04 37' 12.2"  1.634   1.351 10.3  87.4 Vir
 3 Jan   12h43m43.94s  -03 20' 08.5"  1.655   1.318 10.3  90.8 Vir
 5 Jan   12h39m25.69s  -01 58' 00.2"  1.676   1.285 10.3  94.4 Vir
 7 Jan   12h34m44.71s  -00 30' 31.5"  1.697   1.253 10.3  98.1 Vir
 9 Jan   12h29m39.34s  +01 02' 30.7"  1.719   1.222 10.3 101.9 Vir
11 Jan   12h24m07.91s  +02 41' 15.6"  1.740   1.193 10.3 105.8 Vir
13 Jan   12h18m08.79s  +04 25' 45.9"  1.762   1.165 10.3 109.8 Vir
15 Jan   12h11m40.44s  +06 15' 57.1"  1.784   1.140 10.3 114.0 Vir
17 Jan   12h04m41.46s  +08 11' 34.4"  1.805   1.117 10.3 118.3 Vir
19 Jan   11h57m10.72s  +10 12' 11.6"  1.827   1.097 10.3 122.7 Vir
21 Jan   11h49m07.43s  +12 17' 09.2"  1.849   1.080 10.3 127.2 Leo
23 Jan   11h40m31.27s  +14 25' 33.3"  1.871   1.066 10.4 131.8 Leo
25 Jan   11h31m22.49s  +16 36' 16.1"  1.894   1.055 10.4 136.3 Leo
27 Jan   11h21m42.03s  +18 47' 57.2"  1.916   1.049 10.4 140.9 Leo
29 Jan   11h11m31.60s  +20 59' 06.4"  1.938   1.046 10.5 145.3 Leo
31 Jan   11h00m53.75s  +23 08' 07.9"  1.961   1.047 10.5 149.5 Leo