| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 J1 | 1998 05 25.35975 | 05 51 56.02 | -05 04 47.8 | 10.9 | N | 422 |
| C/1998 J1 | 1998 05 25.36990 | 05 51 59.74 | -05 05 52.9 | 8.3 | N | 426 |
| C/1998 J1 | 1998 05 25.37873 | 05 52 02.94 | -05 06 49.6 | 8.9 | N | 426 |
| C/1998 J1 | 1998 05 25.38536 | 05 52 05.32 | -05 07 31.9 | 9.2 | N | 426 |
| C/1998 J1 | 1998 05 25.39515 | 05 52 08.88 | -05 08 34.7 | 8.9 | N | 426 |
| C/1998 J1 | 1998 05 26.35223 | 05 57 49.91 | -06 48 58.7 | 11.7 | N | 422 |
| C/1998 J1 | 1998 05 26.35299 | 05 57 50.21 | -06 49 03.3 | 11.6 | N | 422 |
| C/1998 J1 | 1998 05 26.35375 | 05 57 50.48 | -06 49 08.3 | 11.7 | N | 422 |
| C/1998 J1 | 1998 05 26.35453 | 05 57 50.74 | -06 49 12.9 | 11.7 | N | 422 |
| C/1998 J1 | 1998 05 26.35529 | 05 57 50.98 | -06 49 17.4 | 11.5 | N | 422 |
| C/1998 J1 | 1998 05 26.37148 | 05 57 56.69 | -06 50 57.6 | 9.2 | N | 426 |
| C/1998 J1 | 1998 05 26.37717 | 05 57 58.68 | -06 51 32.8 | 9.6 | N | 426 |
| C/1998 J1 | 1998 05 26.38330 | 05 58 00.83 | -06 52 10.9 | 9.6 | N | 426 |
| C/1998 J1 | 1998 05 26.38969 | 05 58 03.07 | -06 52 50.0 | 9.7 | N | 426 |
| C/1998 J1 | 1998 05 28.37266 | 06 09 19.57 | -10 09 10.1 | 9.8 | N | 426 |
| C/1998 J1 | 1998 05 28.37669 | 06 09 20.85 | -10 09 32.6 | 12.0 | N | 422 |
| C/1998 J1 | 1998 05 28.37745 | 06 09 21.12 | -10 09 37.3 | 12.1 | N | 422 |
| C/1998 J1 | 1998 05 28.37822 | 06 09 21.36 | -10 09 41.6 | 12.0 | N | 422 |
| C/1998 J1 | 1998 05 28.37898 | 06 09 21.60 | -10 09 45.6 | 11.9 | N | 422 |
| C/1998 J1 | 1998 05 28.38163 | 06 09 22.54 | -10 10 01.4 | 9.9 | N | 426 |