| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 05 11.86616 | 13 52 52.97 | +39 26 34.2 | 557 | ||
| C/1998 H1 | 1998 05 11.91385 | 13 52 37.47 | +39 29 27.5 | 046 | ||
| C/1998 H1 | 1998 05 11.91473 | 13 52 37.19 | +39 29 30.7 | 046 | ||
| C/1998 H1 | 1998 05 11.91558 | 13 52 36.90 | +39 29 33.9 | 046 | ||
| C/1998 H1 | 1998 05 11.91653 | 13 52 36.60 | +39 29 37.0 | 046 | ||
| C/1998 H1 | 1998 05 12.00485 | 13 52 07.98 | +39 34 54.9 | 118 | ||
| C/1998 H1 | 1998 05 12.01058 | 13 52 06.15 | +39 35 15.2 | 13.6 | T | 118 |
| C/1998 H1 | 1998 05 12.89896 | 13 47 27.95 | +40 26 30.2 | 15.5 | T | 610 |
| C/1998 H1 | 1998 05 12.90302 | 13 47 26.64 | +40 26 44.0 | 610 | ||
| C/1998 H1 | 1998 05 12.91183 | 13 47 23.80 | +40 27 13.8 | 610 | ||
| C/1998 H1 | 1998 05 12.91898 | 13 47 21.49 | +40 27 38.0 | 610 | ||
| C/1998 H1 | 1998 05 12.92319 | 13 47 20.13 | +40 27 52.3 | 610 | ||
| C/1998 H1 | 1998 05 13.07206 | 13 46 34.85 | +40 36 06.8 | 13.8 | T | 758 |
| C/1998 H1 | 1998 05 13.08035 | 13 46 32.28 | +40 36 34.4 | 13.8 | T | 758 |
| C/1998 H1 | 1998 05 14.56600 | 13 39 06.61 | +41 52 57.9 | 13.4 | T | 402 |
| C/1998 H1 | 1998 05 14.56738 | 13 39 06.18 | +41 53 01.8 | 402 | ||
| C/1998 H1 | 1998 05 14.56877 | 13 39 05.77 | +41 53 05.9 | 402 | ||
| C/1998 H1 | 1998 05 14.57318 | 13 39 04.43 | +41 53 17.9 | 897 | ||
| C/1998 H1 | 1998 05 14.58248 | 13 39 01.72 | +41 53 44.9 | 897 | ||
| C/1998 H1 | 1998 05 14.59147 | 13 38 59.10 | +41 54 10.6 | 12.6 | T | 897 |