| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 W3 | 1999 01 26.60088 | 07 22 58.17 | +42 05 47.2 | 16.0 | T | 402 |
| C/1998 W3 | 1999 01 26.60228 | 07 22 58.01 | +42 05 49.2 | 402 | ||
| C/1998 W3 | 1999 01 26.60366 | 07 22 57.88 | +42 05 49.9 | 402 | ||
| C/1998 W3 | 1999 01 26.73872 | 07 22 44.03 | +42 06 52.3 | 16.7 | T | 360 |
| C/1998 W3 | 1999 01 26.74375 | 07 22 43.55 | +42 06 54.4 | 360 | ||
| C/1998 W3 | 1999 02 06.54450 | 07 05 01.40 | +43 18 51.5 | 16.5 | T | 355 |
| C/1998 W3 | 1999 02 06.54795 | 07 05 01.06 | +43 18 51.8 | 355 | ||
| C/1998 W3 | 1999 02 06.55446 | 07 05 00.46 | +43 18 54.8 | 355 | ||
| C/1998 W3 | 1999 02 06.56580 | 07 04 59.34 | +43 18 58.9 | 16.4 | T | 402 |
| C/1998 W3 | 1999 02 06.56809 | 07 04 59.17 | +43 18 59.2 | 402 | ||
| C/1998 W3 | 1999 02 06.57041 | 07 04 58.94 | +43 19 00.5 | 402 | ||
| C/1998 W3 | 1999 02 08.29448 | 07 02 18.06 | +43 28 14.5 | 18.3 | T | 704 |
| C/1998 W3 | 1999 02 08.30548 | 07 02 17.10 | +43 28 18.0 | 18.8 | T | 704 |
| C/1998 W3 | 1999 02 08.31826 | 07 02 16.00 | +43 28 22.5 | 19.2 | T | 704 |
| C/1998 W3 | 1999 02 08.34239 | 07 02 13.54 | +43 28 28.0 | 18.7 | T | 704 |
| C/1998 W3 | 1999 02 14.58507 | 06 52 59.18 | +43 57 14.1 | 17.1 | T | 360 |
| C/1998 W3 | 1999 02 14.58924 | 06 52 58.83 | +43 57 15.1 | 360 | ||
| C/1998 W3 | 1999 02 16.51870 | 06 50 17.24 | +44 04 44.5 | 17.7 | T | 402 |
| C/1998 W3 | 1999 02 16.52101 | 06 50 17.06 | +44 04 44.8 | 402 | ||
| C/1998 W3 | 1999 02 16.52331 | 06 50 16.85 | +44 04 45.8 | 402 |