| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 M5 | 1999 05 06.51319 | 08 37 47.81 | +44 48 35.2 | 11.7 | T | 360 |
| C/1998 M5 | 1999 05 06.51545 | 08 37 47.93 | +44 48 30.1 | 360 | ||
| C/1998 M5 | 1999 05 08.16525 | 08 39 22.02 | +43 49 12.7 | 16.6 | T | 704 |
| C/1998 M5 | 1999 05 08.17415 | 08 39 22.85 | +43 48 48.9 | 17.1 | T | 704 |
| C/1998 M5 | 1999 05 08.18290 | 08 39 23.00 | +43 48 29.5 | 17.4 | T | 704 |
| C/1998 M5 | 1999 05 08.19169 | 08 39 23.28 | +43 48 09.4 | 18.4 | T | 704 |
| C/1998 M5 | 1999 05 08.20040 | 08 39 24.54 | +43 47 43.6 | 704 | ||
| C/1998 M5 | 1999 05 08.47847 | 08 39 40.11 | +43 38 01.3 | 355 | ||
| C/1998 M5 | 1999 05 08.48090 | 08 39 40.24 | +43 37 56.1 | 355 | ||
| C/1998 M5 | 1999 05 08.48207 | 08 39 40.28 | +43 37 53.5 | 355 | ||
| C/1998 M5 | 1999 05 08.54733 | 08 39 44.06 | +43 35 35.3 | 352 | ||
| C/1998 M5 | 1999 05 08.55149 | 08 39 44.24 | +43 35 26.3 | 352 | ||
| C/1998 M5 | 1999 05 08.55566 | 08 39 44.44 | +43 35 17.7 | 352 | ||
| C/1998 M5 | 1999 05 11.53105 | 08 42 34.42 | +41 52 32.0 | 13.3 | T | 351 |
| C/1998 M5 | 1999 05 11.53501 | 08 42 34.59 | +41 52 23.3 | 351 | ||
| C/1998 M5 | 1999 05 11.53785 | 08 42 34.86 | +41 52 17.3 | 351 | ||
| C/1998 M5 | 1999 05 11.54571 | 08 42 35.22 | +41 52 01.6 | 13.1 | T | 900 |
| C/1998 M5 | 1999 05 11.55662 | 08 42 35.83 | +41 51 39.1 | 900 | ||
| C/1998 M5 | 1999 05 13.51037 | 08 44 27.37 | +40 46 43.0 | 903 | ||
| C/1998 M5 | 1999 05 13.51287 | 08 44 27.47 | +40 46 37.2 | 367 |