| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 W3 | 1998 12 16.08910 | 08 27 03.40 | +34 13 56.6 | 17.0 | T | 046 |
| C/1998 W3 | 1998 12 16.70382 | 08 26 19.85 | +34 22 04.8 | 16.9 | T | 360 |
| C/1998 W3 | 1998 12 16.70799 | 08 26 19.56 | +34 22 08.0 | 360 | ||
| C/1998 W3 | 1998 12 16.71215 | 08 26 19.25 | +34 22 11.3 | 360 | ||
| C/1998 W3 | 1998 12 17.89196 | 08 24 54.00 | +34 37 47.0 | 16.7 | T | 113 |
| C/1998 W3 | 1998 12 17.91556 | 08 24 52.33 | +34 38 07.2 | 16.5 | T | 113 |
| C/1998 W3 | 1998 12 17.93547 | 08 24 50.79 | +34 38 21.6 | 16.8 | T | 113 |
| C/1998 W3 | 1998 12 18.69427 | 08 23 54.92 | +34 48 24.0 | 16.5 | T | 402 |
| C/1998 W3 | 1998 12 18.69705 | 08 23 54.70 | +34 48 26.0 | 402 | ||
| C/1998 W3 | 1998 12 18.69983 | 08 23 54.48 | +34 48 28.1 | 402 | ||
| C/1998 W3 | 1998 12 19.63445 | 08 22 44.48 | +35 00 49.8 | 16.7 | T | 355 |
| C/1998 W3 | 1998 12 19.64527 | 08 22 43.59 | +35 00 57.0 | 355 | ||
| C/1998 W3 | 1998 12 19.64877 | 08 22 43.36 | +35 00 59.6 | 355 | ||
| C/1998 W3 | 1998 12 21.70955 | 08 20 04.52 | +35 28 09.7 | 16.8 | T | 360 |
| C/1998 W3 | 1998 12 21.71458 | 08 20 04.12 | +35 28 13.9 | 360 | ||
| C/1998 W3 | 1998 12 21.71806 | 08 20 03.84 | +35 28 16.6 | 360 | ||
| C/1998 W3 | 1998 12 24.60558 | 08 16 11.55 | +36 06 05.2 | 16.7 | T | 355 |
| C/1998 W3 | 1998 12 24.60870 | 08 16 11.22 | +36 06 07.1 | 355 | ||
| C/1998 W3 | 1998 12 24.61285 | 08 16 10.87 | +36 06 11.3 | 355 | ||
| C/1998 W3 | 1998 12 27.70598 | 08 11 49.75 | +36 46 10.0 | 16.5 | T | 402 |