| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 J1 | 1998 05 08.49113 | 03 09 11.60 | +25 12 45.0 | 249 | ||
| C/1998 J1 | 1998 05 08.53048 | 03 09 48.60 | +25 13 26.0 | 249 | ||
| C/1998 J1 | 1998 05 08.57493 | 03 10 30.60 | +25 13 50.0 | 249 | ||
| C/1998 J1 | 1998 05 08.61586 | 03 11 10.20 | +25 13 46.0 | 249 | ||
| C/1998 J1 | 1998 05 08.65528 | 03 11 48.00 | +25 14 38.0 | 249 | ||
| C/1998 J1 | 1998 05 08.73697 | 03 13 10.90 | +25 13 22.0 | 249 | ||
| C/1998 J1 | 1998 05 08.77864 | 03 13 44.70 | +25 14 56.0 | 249 | ||
| C/1998 J1 | 1998 05 08.82315 | 03 14 26.50 | +25 14 51.0 | 249 | ||
| C/1998 J1 | 1998 05 20.35333 | 05 18 56.61 | +04 36 49.9 | 8.5 | N | 422 |
| C/1998 J1 | 1998 05 20.35406 | 05 18 56.89 | +04 36 44.7 | 8.1 | N | 422 |
| C/1998 J1 | 1998 05 20.35481 | 05 18 57.21 | +04 36 38.8 | 8.4 | N | 422 |
| C/1998 J1 | 1998 05 20.35557 | 05 18 57.44 | +04 36 34.9 | 8.2 | N | 422 |
| C/1998 J1 | 1998 05 20.36016 | 05 18 59.55 | +04 35 58.8 | 8.3 | N | 422 |
| C/1998 J1 | 1998 05 20.36083 | 05 18 59.90 | +04 35 54.0 | 8.4 | N | 422 |
| C/1998 J1 | 1998 05 20.36151 | 05 19 00.24 | +04 35 49.0 | 8.5 | N | 422 |
| C/1998 J1 | 1998 05 20.36219 | 05 19 00.63 | +04 35 42.0 | 8.4 | N | 422 |
| C/1998 J1 | 1998 05 20.36491 | 05 19 01.96 | +04 35 19.9 | 8.3 | N | 422 |
| C/1998 J1 | 1998 05 20.37536 | 05 19 06.20 | +04 34 05.1 | 6.4 | N | 426 |
| C/1998 J1 | 1998 05 20.37672 | 05 19 06.75 | +04 33 56.2 | 6.3 | N | 426 |
| C/1998 J1 | 1998 05 20.37887 | 05 19 07.65 | +04 33 38.8 | 6.7 | N | 426 |