| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 W3 | 1998 12 27.70737 | 08 11 49.61 | +36 46 11.6 | 402 | ||
| C/1998 W3 | 1998 12 27.70876 | 08 11 49.46 | +36 46 12.6 | 402 | ||
| C/1998 W3 | 1999 01 08.68325 | 07 53 18.30 | +39 12 05.1 | 355 | ||
| C/1998 W3 | 1999 01 08.69253 | 07 53 17.34 | +39 12 11.6 | 16.3 | T | 355 |
| C/1998 W3 | 1999 01 08.70227 | 07 53 16.38 | +39 12 18.7 | 355 | ||
| C/1998 W3 | 1999 01 15.35971 | 07 42 08.94 | +40 24 13.9 | 693 | ||
| C/1998 W3 | 1999 01 15.36858 | 07 42 08.07 | +40 24 18.4 | 693 | ||
| C/1998 W3 | 1999 01 15.37693 | 07 42 07.20 | +40 24 23.4 | 16.5 | T | 693 |
| C/1998 W3 | 1999 01 17.53750 | 07 38 26.64 | +40 45 56.6 | 16.9 | T | 367 |
| C/1998 W3 | 1999 01 17.54167 | 07 38 26.14 | +40 45 59.1 | 367 | ||
| C/1998 W3 | 1999 01 17.54583 | 07 38 25.78 | +40 46 02.1 | 367 | ||
| C/1998 W3 | 1999 01 17.65955 | 07 38 14.06 | +40 47 08.7 | 16.6 | T | 402 |
| C/1998 W3 | 1999 01 17.66094 | 07 38 13.83 | +40 47 09.3 | 402 | ||
| C/1998 W3 | 1999 01 17.66233 | 07 38 13.74 | +40 47 10.1 | 402 | ||
| C/1998 W3 | 1999 01 18.86711 | 07 36 10.23 | +40 58 44.1 | 16.8 | T | 113 |
| C/1998 W3 | 1999 01 18.89352 | 07 36 07.47 | +40 58 59.1 | 16.9 | T | 113 |
| C/1998 W3 | 1999 01 18.92058 | 07 36 04.77 | +40 59 14.7 | 16.8 | T | 113 |
| C/1998 W3 | 1999 01 18.93172 | 07 36 03.58 | +40 59 21.2 | 118 | ||
| C/1998 W3 | 1999 01 18.95047 | 07 36 01.73 | +40 59 31.5 | 143 | ||
| C/1998 W3 | 1999 01 18.96928 | 07 35 59.73 | +40 59 42.7 | 16.4 | T | 118 |