| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 04 26.74960 | 15 27 16.71 | +12 03 50.1 | 867 | ||
| C/1998 H1 | 1998 04 26.79369 | 15 27 00.29 | +12 10 40.2 | 046 | ||
| C/1998 H1 | 1998 04 26.79503 | 15 26 59.75 | +12 10 52.1 | 046 | ||
| C/1998 H1 | 1998 04 26.79635 | 15 26 59.25 | +12 11 05.0 | 046 | ||
| C/1998 H1 | 1998 04 26.79700 | 15 26 59.03 | +12 11 10.9 | 046 | ||
| C/1998 H1 | 1998 04 26.79990 | 15 26 57.86 | +12 11 39.0 | 12.5 | T | 046 |
| C/1998 H1 | 1998 04 26.80690 | 15 26 55.06 | +12 12 43.5 | 046 | ||
| C/1998 H1 | 1998 04 26.80875 | 15 26 54.28 | +12 13 01.1 | 046 | ||
| C/1998 H1 | 1998 04 26.85619 | 15 26 35.36 | +12 20 24.9 | 046 | ||
| C/1998 H1 | 1998 04 26.85816 | 15 26 34.57 | +12 20 43.3 | 557 | ||
| C/1998 H1 | 1998 04 26.85910 | 15 26 34.20 | +12 20 51.9 | 557 | ||
| C/1998 H1 | 1998 04 26.86002 | 15 26 33.82 | +12 21 00.7 | 557 | ||
| C/1998 H1 | 1998 04 26.86073 | 15 26 33.53 | +12 21 08.4 | 046 | ||
| C/1998 H1 | 1998 04 26.86097 | 15 26 33.45 | +12 21 09.2 | 557 | ||
| C/1998 H1 | 1998 04 26.86191 | 15 26 33.08 | +12 21 17.7 | 557 | ||
| C/1998 H1 | 1998 04 27.00057 | 15 25 37.35 | +12 42 54.5 | 616 | ||
| C/1998 H1 | 1998 04 27.00109 | 15 25 37.24 | +12 42 59.4 | 616 | ||
| C/1998 H1 | 1998 04 27.00163 | 15 25 36.96 | +12 43 03.9 | 616 | ||
| C/1998 H1 | 1998 04 27.00218 | 15 25 36.83 | +12 43 08.5 | 616 | ||
| C/1998 H1 | 1998 04 27.21161 | 15 24 13.82 | +13 15 34.1 | 750 |