| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 H1 | 1998 05 08.91245 | 14 09 20.57 | +36 04 04.0 | 13.7 | T | 605 |
| C/1998 H1 | 1998 05 09.85279 | 14 03 57.04 | +37 13 49.6 | 13.9 | T | 605 |
| C/1998 H1 | 1998 05 09.87164 | 14 03 50.69 | +37 15 11.8 | 14.1 | T | 605 |
| C/1998 H1 | 1998 05 09.88152 | 14 03 47.18 | +37 15 51.5 | 13.9 | T | 605 |
| C/1998 H1 | 1998 05 09.98157 | 14 03 13.06 | +37 23 03.7 | 611 | ||
| C/1998 H1 | 1998 05 09.98432 | 14 03 12.17 | +37 23 14.9 | 611 | ||
| C/1998 H1 | 1998 05 09.98594 | 14 03 11.60 | +37 23 21.9 | 611 | ||
| C/1998 H1 | 1998 05 10.90318 | 13 58 05.59 | +38 25 48.4 | 13.4 | T | 605 |
| C/1998 H1 | 1998 05 10.91294 | 13 58 02.36 | +38 26 27.8 | 13.6 | T | 605 |
| C/1998 H1 | 1998 05 10.92322 | 13 57 58.98 | +38 27 06.8 | 13.7 | T | 605 |
| C/1998 H1 | 1998 05 11.10677 | 13 56 59.28 | +38 39 04.6 | 735 | ||
| C/1998 H1 | 1998 05 11.11580 | 13 56 56.33 | +38 39 40.4 | 735 | ||
| C/1998 H1 | 1998 05 11.12483 | 13 56 53.34 | +38 40 15.0 | 735 | ||
| C/1998 H1 | 1998 05 11.18321 | 13 56 34.10 | +38 44 02.0 | 15.0 | T | 700 |
| C/1998 H1 | 1998 05 11.18656 | 13 56 32.84 | +38 44 15.0 | 14.5 | T | 700 |
| C/1998 H1 | 1998 05 11.19299 | 13 56 30.64 | +38 44 39.9 | 14.7 | T | 700 |
| C/1998 H1 | 1998 05 11.84366 | 13 53 00.45 | +39 25 12.7 | 14.3 | T | 560 |
| C/1998 H1 | 1998 05 11.85228 | 13 52 57.56 | +39 25 43.1 | 14.5 | T | 560 |
| C/1998 H1 | 1998 05 11.86229 | 13 52 54.20 | +39 26 20.1 | 15.1 | N | 557 |
| C/1998 H1 | 1998 05 11.86486 | 13 52 53.36 | +39 26 29.1 | 13.2 | T | 557 |