| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 M5 | 1999 01 17.73123 | 19 06 38.62 | +46 59 21.9 | 12.8 | T | 057 |
| C/1998 M5 | 1999 01 18.78328 | 19 07 20.94 | +47 26 12.5 | 12.8 | T | 613 |
| C/1998 M5 | 1999 01 18.78626 | 19 07 21.04 | +47 26 16.5 | 12.9 | T | 613 |
| C/1998 M5 | 1999 01 21.75316 | 19 09 23.29 | +48 45 55.4 | 046 | ||
| C/1998 M5 | 1999 01 21.75554 | 19 09 23.35 | +48 45 59.2 | 046 | ||
| C/1998 M5 | 1999 01 21.75637 | 19 09 23.44 | +48 46 01.0 | 046 | ||
| C/1998 M5 | 1999 01 22.83622 | 19 10 09.40 | +49 16 29.4 | 12.0 | T | 351 |
| C/1998 M5 | 1999 01 22.84130 | 19 10 09.57 | +49 16 37.2 | 351 | ||
| C/1998 M5 | 1999 01 22.84513 | 19 10 09.64 | +49 16 44.8 | 351 | ||
| C/1998 M5 | 1999 01 29.83756 | 19 15 13.10 | +52 53 12.2 | 897 | ||
| C/1998 M5 | 1999 01 29.84287 | 19 15 13.35 | +52 53 22.9 | 897 | ||
| C/1998 M5 | 1999 01 30.76742 | 19 15 53.90 | +53 24 34.2 | 11.4 | T | 504 |
| C/1998 M5 | 1999 01 30.76881 | 19 15 54.03 | +53 24 37.4 | 11.5 | T | 504 |
| C/1998 M5 | 1999 01 30.76970 | 19 15 54.05 | +53 24 39.2 | 11.4 | T | 504 |
| C/1998 M5 | 1999 01 30.77193 | 19 15 54.09 | +53 24 43.4 | 11.3 | T | 504 |
| C/1998 M5 | 1999 01 30.77291 | 19 15 54.25 | +53 24 46.4 | 11.3 | T | 504 |
| C/1998 M5 | 1999 01 30.77387 | 19 15 54.27 | +53 24 48.0 | 11.2 | T | 504 |
| C/1998 M5 | 1999 02 07.08273 | 19 21 32.95 | +57 54 32.9 | 11.5 | T | 120 |
| C/1998 M5 | 1999 02 07.09119 | 19 21 33.30 | +57 54 54.6 | 120 | ||
| C/1998 M5 | 1999 02 07.10117 | 19 21 33.79 | +57 55 18.3 | 120 |
