| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 05 24.15194 | 13 00 27.09 | +47 07 46.8 | 17.2 | T | 755 |
| C/1998 H1 | 1998 05 24.16008 | 13 00 25.42 | +47 07 57.2 | 17.1 | T | 755 |
| C/1998 H1 | 1998 05 25.96929 | 12 54 48.79 | +47 43 07.6 | 118 | ||
| C/1998 H1 | 1998 05 25.97490 | 12 54 47.78 | +47 43 13.6 | 13.6 | T | 118 |
| C/1998 H1 | 1998 05 26.47292 | 12 53 20.88 | +47 52 02.0 | 14.0 | T | 402 |
| C/1998 H1 | 1998 05 26.47432 | 12 53 20.64 | +47 52 03.7 | 402 | ||
| C/1998 H1 | 1998 05 26.47571 | 12 53 20.39 | +47 52 05.2 | 402 | ||
| C/1998 H1 | 1998 05 26.58229 | 12 53 01.55 | +47 53 53.9 | 14.0 | T | 360 |
| C/1998 H1 | 1998 05 26.58542 | 12 53 01.02 | +47 53 57.1 | 360 | ||
| C/1998 H1 | 1998 05 26.58658 | 12 53 00.94 | +47 53 56.4 | 14.0 | T | 900 |
| C/1998 H1 | 1998 05 26.59931 | 12 52 58.70 | +47 54 09.3 | 900 | ||
| C/1998 H1 | 1998 05 27.11500 | 12 51 31.38 | +48 02 43.6 | 16.6 | T | 755 |
| C/1998 H1 | 1998 05 27.12272 | 12 51 30.10 | +48 02 52.1 | 16.6 | T | 755 |
| C/1998 H1 | 1998 05 27.85634 | 12 49 29.15 | +48 14 23.6 | 046 | ||
| C/1998 H1 | 1998 05 27.85756 | 12 49 28.95 | +48 14 24.6 | 046 | ||
| C/1998 H1 | 1998 05 27.85900 | 12 49 28.72 | +48 14 26.0 | 046 | ||
| C/1998 H1 | 1998 05 27.96264 | 12 49 11.80 | +48 15 58.0 | 118 | ||
| C/1998 H1 | 1998 05 27.96793 | 12 49 10.96 | +48 16 02.8 | 13.8 | T | 118 |
| C/1998 H1 | 1998 05 29.16853 | 12 46 04.48 | +48 33 15.1 | 15.5 | T | 682 |
| C/1998 H1 | 1998 05 29.17630 | 12 46 03.41 | +48 33 21.0 | 15.5 | T | 682 |