| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 04 28.23482 | 15 17 25.77 | +15 51 03.3 | 750 | ||
| C/1998 H1 | 1998 04 28.26702 | 15 17 12.76 | +15 55 51.9 | 750 | ||
| C/1998 H1 | 1998 04 28.54711 | 15 15 21.41 | +16 37 29.3 | 12.2 | T | 402 |
| C/1998 H1 | 1998 04 28.54850 | 15 15 20.86 | +16 37 41.8 | 402 | ||
| C/1998 H1 | 1998 04 28.54988 | 15 15 20.29 | +16 37 53.8 | 402 | ||
| C/1998 H1 | 1998 04 28.55226 | 15 15 19.32 | +16 38 14.4 | 900 | ||
| C/1998 H1 | 1998 04 28.55795 | 15 15 17.05 | +16 39 05.0 | 12.2 | T | 900 |
| C/1998 H1 | 1998 04 28.56192 | 15 15 15.38 | +16 39 39.0 | 12.1 | T | 367 |
| C/1998 H1 | 1998 04 28.56741 | 15 15 13.20 | +16 40 27.8 | 367 | ||
| C/1998 H1 | 1998 04 28.58096 | 15 15 07.68 | +16 42 29.7 | 352 | ||
| C/1998 H1 | 1998 04 28.58374 | 15 15 06.61 | +16 42 53.1 | 352 | ||
| C/1998 H1 | 1998 04 28.58652 | 15 15 05.44 | +16 43 18.2 | 352 | ||
| C/1998 H1 | 1998 04 28.69479 | 15 14 21.69 | +16 59 16.3 | 360 | ||
| C/1998 H1 | 1998 04 28.69653 | 15 14 20.99 | +16 59 31.3 | 360 | ||
| C/1998 H1 | 1998 04 28.72882 | 15 14 07.76 | +17 04 12.1 | 11.0 | T | 871 |
| C/1998 H1 | 1998 04 28.73333 | 15 14 05.99 | +17 04 53.9 | 871 | ||
| C/1998 H1 | 1998 04 28.73785 | 15 14 04.31 | +17 05 31.2 | 871 | ||
| C/1998 H1 | 1998 04 28.88317 | 15 13 07.15 | +17 26 45.1 | 504 | ||
| C/1998 H1 | 1998 04 28.88642 | 15 13 05.91 | +17 27 13.8 | 504 | ||
| C/1998 H1 | 1998 04 28.88703 | 15 13 05.60 | +17 27 19.4 | 504 |