| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 05 29.18274 | 12 46 02.35 | +48 33 26.8 | 15.5 | T | 682 |
| C/1998 H1 | 1998 05 29.90534 | 12 44 15.27 | +48 42 55.4 | 118 | ||
| C/1998 H1 | 1998 05 29.91559 | 12 44 13.72 | +48 43 03.9 | 13.8 | T | 118 |
| C/1998 H1 | 1998 05 30.14116 | 12 43 41.44 | +48 45 53.4 | 17.0 | T | 755 |
| C/1998 H1 | 1998 05 30.14549 | 12 43 40.81 | +48 45 56.4 | 17.0 | T | 755 |
| C/1998 H1 | 1998 06 02.87765 | 12 35 37.69 | +49 25 29.7 | 118 | ||
| C/1998 H1 | 1998 06 02.88523 | 12 35 36.75 | +49 25 33.6 | 118 | ||
| C/1998 H1 | 1998 06 04.50337 | 12 32 37.47 | +49 39 01.6 | 15.1 | T | 900 |
| C/1998 H1 | 1998 06 04.51640 | 12 32 36.07 | +49 39 07.7 | 900 | ||
| C/1998 H1 | 1998 06 05.89434 | 12 30 16.45 | +49 49 03.2 | 15.7 | N | 143 |
| C/1998 H1 | 1998 06 05.90218 | 12 30 15.70 | +49 49 07.0 | 15.6 | N | 143 |
| C/1998 H1 | 1998 06 05.91003 | 12 30 14.80 | +49 49 10.3 | 16.1 | N | 143 |
| C/1998 H1 | 1998 06 06.86083 | 12 28 45.08 | +49 55 22.4 | 046 | ||
| C/1998 H1 | 1998 06 06.86362 | 12 28 44.84 | +49 55 23.2 | 046 | ||
| C/1998 H1 | 1998 06 06.86640 | 12 28 44.58 | +49 55 24.5 | 046 | ||
| C/1998 H1 | 1998 06 07.87384 | 12 27 15.28 | +50 01 22.3 | 118 | ||
| C/1998 H1 | 1998 06 07.88157 | 12 27 14.61 | +50 01 25.1 | 118 | ||
| C/1998 H1 | 1998 06 08.17913 | 12 26 49.31 | +50 03 04.0 | 750 | ||
| C/1998 H1 | 1998 06 08.19720 | 12 26 47.82 | +50 03 10.1 | 750 | ||
| C/1998 H1 | 1998 06 09.87127 | 12 24 34.57 | +50 11 39.7 | 046 |