| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 T1 | 1998 10 01.38922 | 01 56 07.88 | +23 20 14.5 | 16.3 | N | G91 |
| C/1998 T1 | 1998 10 02.28667 | 01 54 23.56 | +23 12 36.5 | 17.6 | T | 704 |
| C/1998 T1 | 1998 10 02.30183 | 01 54 21.82 | +23 12 28.7 | 18.2 | T | 704 |
| C/1998 T1 | 1998 10 02.31694 | 01 54 20.00 | +23 12 21.4 | 18.2 | T | 704 |
| C/1998 T1 | 1998 10 02.33208 | 01 54 18.17 | +23 12 13.0 | 17.7 | T | 704 |
| C/1998 T1 | 1998 10 02.34729 | 01 54 16.34 | +23 12 06.1 | 17.9 | T | 704 |
| C/1998 T1 | 1998 10 03.67615 | 01 51 38.95 | +23 00 17.2 | 15.8 | T | 900 |
| C/1998 T1 | 1998 10 03.68532 | 01 51 37.83 | +23 00 12.8 | 900 | ||
| C/1998 T1 | 1998 10 03.82525 | 01 51 21.21 | +22 58 54.7 | 046 | ||
| C/1998 T1 | 1998 10 03.82752 | 01 51 20.97 | +22 58 53.7 | 046 | ||
| C/1998 T1 | 1998 10 03.82894 | 01 51 20.86 | +22 58 51.2 | 046 | ||
| C/1998 T1 | 1998 10 03.83007 | 01 51 20.70 | +22 58 52.5 | 046 | ||
| C/1998 T1 | 1998 10 03.83118 | 01 51 20.57 | +22 58 51.8 | 046 | ||
| C/1998 T1 | 1998 10 03.83236 | 01 51 20.38 | +22 58 51.3 | 046 | ||
| C/1998 T1 | 1998 10 03.85810 | 01 51 17.46 | +22 58 42.1 | 108 | ||
| C/1998 T1 | 1998 10 03.86201 | 01 51 16.94 | +22 58 36.3 | 108 | ||
| C/1998 T1 | 1998 10 03.89909 | 01 51 12.52 | +22 58 15.2 | 16.5 | T | 108 |
| C/1998 T1 | 1998 10 05.08372 | 01 48 49.07 | +22 47 11.2 | 758 | ||
| C/1998 T1 | 1998 10 05.09505 | 01 48 47.58 | +22 47 04.3 | 758 | ||
| C/1998 T1 | 1998 10 05.09990 | 01 48 46.95 | +22 47 02.0 | 758 |