| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 04 29.24709 | 15 10 41.74 | +18 19 29.8 | 14.6 | T | 700 |
| C/1998 H1 | 1998 04 29.51386 | 15 08 55.46 | +18 57 35.2 | 12.4 | T | 900 |
| C/1998 H1 | 1998 04 29.51957 | 15 08 53.12 | +18 58 24.1 | 900 | ||
| C/1998 H1 | 1998 04 29.52358 | 15 08 51.53 | +18 58 58.8 | 13.0 | T | 355 |
| C/1998 H1 | 1998 04 29.53345 | 15 08 47.58 | +19 00 23.1 | 355 | ||
| C/1998 H1 | 1998 04 29.53512 | 15 08 46.89 | +19 00 36.6 | 355 | ||
| C/1998 H1 | 1998 04 29.54059 | 15 08 44.71 | +19 01 21.7 | 11.0 | T | 886 |
| C/1998 H1 | 1998 04 29.55131 | 15 08 40.37 | +19 02 52.9 | 886 | ||
| C/1998 H1 | 1998 04 29.71713 | 15 07 33.58 | +19 26 20.1 | 11.0 | T | 871 |
| C/1998 H1 | 1998 04 29.72407 | 15 07 30.50 | +19 27 17.3 | 871 | ||
| C/1998 H1 | 1998 04 29.72894 | 15 07 28.60 | +19 27 50.3 | 871 | ||
| C/1998 H1 | 1998 04 29.73535 | 15 07 25.84 | +19 28 53.8 | 12.8 | T | 347 |
| C/1998 H1 | 1998 04 29.73949 | 15 07 24.19 | +19 29 28.1 | 12.8 | T | 347 |
| C/1998 H1 | 1998 04 29.75275 | 15 07 18.86 | +19 31 20.5 | 12.5 | T | 347 |
| C/1998 H1 | 1998 04 29.89936 | 15 06 21.41 | +19 51 48.0 | 145 | ||
| C/1998 H1 | 1998 04 29.90618 | 15 06 18.65 | +19 52 44.7 | 145 | ||
| C/1998 H1 | 1998 04 29.91152 | 15 06 16.52 | +19 53 30.0 | 145 | ||
| C/1998 H1 | 1998 04 29.91942 | 15 06 13.32 | +19 54 35.8 | 145 | ||
| C/1998 H1 | 1998 04 29.92023 | 15 06 13.14 | +19 54 45.7 | 10.5 | T | 610 |
| C/1998 H1 | 1998 04 29.92182 | 15 06 12.48 | +19 54 58.8 | 610 |