| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 J1 | 1998 05 23.38620 | 05 39 38.13 | -01 26 18.3 | 9.2 | N | 426 |
| C/1998 J1 | 1998 05 23.39117 | 05 39 40.07 | -01 26 52.1 | 8.9 | N | 426 |
| C/1998 J1 | 1998 05 23.39747 | 05 39 42.44 | -01 27 35.1 | 8.6 | N | 426 |
| C/1998 J1 | 1998 05 23.40146 | 05 39 43.99 | -01 28 02.7 | 9.1 | N | 426 |
| C/1998 J1 | 1998 05 24.35564 | 05 45 46.59 | -03 15 29.3 | 11.2 | N | 422 |
| C/1998 J1 | 1998 05 24.35639 | 05 45 46.89 | -03 15 34.4 | 11.3 | N | 422 |
| C/1998 J1 | 1998 05 24.35712 | 05 45 47.19 | -03 15 39.6 | 10.9 | N | 422 |
| C/1998 J1 | 1998 05 24.35786 | 05 45 47.44 | -03 15 44.0 | 11.2 | N | 422 |
| C/1998 J1 | 1998 05 24.35859 | 05 45 47.71 | -03 15 48.8 | 11.3 | N | 422 |
| C/1998 J1 | 1998 05 24.36581 | 05 45 50.41 | -03 16 36.9 | 11.0 | N | 422 |
| C/1998 J1 | 1998 05 24.36708 | 05 45 50.92 | -03 16 46.1 | 8.2 | N | 426 |
| C/1998 J1 | 1998 05 24.36800 | 05 45 51.21 | -03 16 51.5 | 11.0 | N | 422 |
| C/1998 J1 | 1998 05 24.37455 | 05 45 53.70 | -03 17 35.3 | 8.9 | N | 426 |
| C/1998 J1 | 1998 05 24.38369 | 05 45 57.10 | -03 18 35.9 | 9.4 | N | 426 |
| C/1998 J1 | 1998 05 24.39174 | 05 46 00.07 | -03 19 29.0 | 9.2 | N | 426 |
| C/1998 J1 | 1998 05 24.39607 | 05 46 01.69 | -03 19 58.0 | 9.1 | N | 426 |
| C/1998 J1 | 1998 05 25.35708 | 05 51 55.10 | -05 04 30.7 | 11.3 | N | 422 |
| C/1998 J1 | 1998 05 25.35774 | 05 51 55.33 | -05 04 34.9 | 11.4 | N | 422 |
| C/1998 J1 | 1998 05 25.35840 | 05 51 55.58 | -05 04 39.4 | 11.3 | N | 422 |
| C/1998 J1 | 1998 05 25.35908 | 05 51 55.79 | -05 04 43.5 | 11.1 | N | 422 |