| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 04 29.92318 | 15 06 11.91 | +19 55 10.0 | 610 | ||
| C/1998 H1 | 1998 04 29.92453 | 15 06 11.35 | +19 55 21.1 | 610 | ||
| C/1998 H1 | 1998 04 29.92565 | 15 06 10.84 | +19 55 28.1 | 145 | ||
| C/1998 H1 | 1998 04 29.92620 | 15 06 10.65 | +19 55 34.9 | 610 | ||
| C/1998 H1 | 1998 04 29.93535 | 15 06 06.89 | +19 56 48.7 | 145 | ||
| C/1998 H1 | 1998 04 29.94822 | 15 06 01.69 | +19 58 37.1 | 145 | ||
| C/1998 H1 | 1998 04 30.18563 | 15 04 27.23 | +20 31 30.8 | 14.7 | T | 750 |
| C/1998 H1 | 1998 04 30.19732 | 15 04 22.48 | +20 33 08.1 | 14.3 | T | 750 |
| C/1998 H1 | 1998 04 30.20385 | 15 04 20.22 | +20 34 04.7 | 14.4 | T | 700 |
| C/1998 H1 | 1998 04 30.20686 | 15 04 18.64 | +20 34 27.7 | 15.6 | T | 750 |
| C/1998 H1 | 1998 04 30.20804 | 15 04 18.54 | +20 34 38.9 | 14.1 | T | 700 |
| C/1998 H1 | 1998 04 30.21324 | 15 04 16.41 | +20 35 20.8 | 14.0 | T | 700 |
| C/1998 H1 | 1998 04 30.23568 | 15 04 07.08 | +20 38 25.0 | 15.4 | T | 750 |
| C/1998 H1 | 1998 04 30.24035 | 15 04 05.19 | +20 39 03.6 | 16.1 | T | 750 |
| C/1998 H1 | 1998 04 30.28214 | 15 03 48.37 | +20 44 48.9 | 15.1 | T | 750 |
| C/1998 H1 | 1998 04 30.52771 | 15 02 11.20 | +21 18 17.8 | 12.2 | T | 402 |
| C/1998 H1 | 1998 04 30.52840 | 15 02 10.93 | +21 18 23.2 | 402 | ||
| C/1998 H1 | 1998 04 30.52910 | 15 02 10.63 | +21 18 28.7 | 402 | ||
| C/1998 H1 | 1998 04 30.56184 | 15 01 57.35 | +21 22 52.2 | 12.8 | T | 400 |
| C/1998 H1 | 1998 04 30.56355 | 15 01 56.62 | +21 23 03.3 | 400 |