| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 05 19.90023 | 13 15 40.02 | +45 19 27.7 | 504 | ||
| C/1998 H1 | 1998 05 19.90157 | 13 15 39.74 | +45 19 29.6 | 504 | ||
| C/1998 H1 | 1998 05 19.90242 | 13 15 39.51 | +45 19 30.7 | 504 | ||
| C/1998 H1 | 1998 05 19.91535 | 13 15 36.35 | +45 19 53.0 | 146 | ||
| C/1998 H1 | 1998 05 19.92461 | 13 15 34.12 | +45 20 11.3 | 146 | ||
| C/1998 H1 | 1998 05 20.04766 | 13 15 05.81 | +45 23 53.8 | 14.4 | T | 758 |
| C/1998 H1 | 1998 05 20.05097 | 13 15 04.94 | +45 24 03.0 | 14.6 | T | 758 |
| C/1998 H1 | 1998 05 20.55697 | 13 13 07.19 | +45 38 55.6 | 897 | ||
| C/1998 H1 | 1998 05 20.56573 | 13 13 05.11 | +45 39 11.2 | 12.9 | T | 897 |
| C/1998 H1 | 1998 05 20.57425 | 13 13 03.09 | +45 39 25.8 | 897 | ||
| C/1998 H1 | 1998 05 20.67836 | 13 12 38.93 | +45 42 23.0 | 13.8 | T | 347 |
| C/1998 H1 | 1998 05 20.68260 | 13 12 38.02 | +45 42 28.9 | 13.5 | T | 347 |
| C/1998 H1 | 1998 05 20.68637 | 13 12 37.00 | +45 42 36.2 | 13.4 | T | 347 |
| C/1998 H1 | 1998 05 20.69073 | 13 12 36.16 | +45 42 42.5 | 13.6 | T | 347 |
| C/1998 H1 | 1998 05 20.93622 | 13 11 40.95 | +45 49 38.5 | 16.3 | N | 143 |
| C/1998 H1 | 1998 05 20.93817 | 13 11 40.52 | +45 49 41.4 | 16.5 | N | 143 |
| C/1998 H1 | 1998 05 20.94013 | 13 11 40.10 | +45 49 44.5 | 16.3 | N | 143 |
| C/1998 H1 | 1998 05 20.95189 | 13 11 37.38 | +45 50 04.3 | 16.3 | N | 143 |
| C/1998 H1 | 1998 05 20.95384 | 13 11 36.95 | +45 50 07.4 | 16.3 | N | 143 |
| C/1998 H1 | 1998 05 20.95580 | 13 11 36.50 | +45 50 10.7 | 16.3 | N | 143 |
