| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1998 M5 | 1999 02 26.90001 | 19 38 39.83 | +73 38 14.1 | 504 | ||
| C/1998 M5 | 1999 02 26.95168 | 19 38 43.19 | +73 41 05.1 | 587 | ||
| C/1998 M5 | 1999 02 26.95341 | 19 38 43.29 | +73 41 11.0 | 587 | ||
| C/1998 M5 | 1999 02 26.95469 | 19 38 43.35 | +73 41 15.2 | 587 | ||
| C/1998 M5 | 1999 03 05.06395 | 19 45 10.00 | +79 29 38.2 | 118 | ||
| C/1998 M5 | 1999 03 05.08345 | 19 45 11.23 | +79 30 47.9 | 118 | ||
| C/1998 M5 | 1999 03 12.18440 | 19 59 00.53 | +86 38 40.2 | 15.4 | T | 750 |
| C/1998 M5 | 1999 03 12.19200 | 19 59 03.17 | +86 39 08.8 | 15.1 | T | 750 |
| C/1998 M5 | 1999 03 12.19823 | 19 59 04.70 | +86 39 31.8 | 15.5 | T | 750 |
| C/1998 M5 | 1999 03 16.15660 | 07 01 25.72 | +89 14 02.0 | 16.2 | T | 750 |
| C/1998 M5 | 1999 03 16.16345 | 07 01 51.93 | +89 13 36.9 | 16.2 | T | 750 |
| C/1998 M5 | 1999 03 16.21656 | 07 05 08.57 | +89 10 22.0 | 16.1 | T | 750 |
| C/1998 M5 | 1999 03 16.44691 | 07 15 47.69 | +88 56 17.7 | 12.6 | T | 897 |
| C/1998 M5 | 1999 03 16.45043 | 07 15 55.24 | +88 56 04.1 | 897 | ||
| C/1998 M5 | 1999 03 16.47888 | 07 16 50.73 | +88 54 19.2 | 12.4 | T | 897 |
| C/1998 M5 | 1999 03 16.53086 | 07 18 30.97 | +88 51 07.0 | 12.9 | T | 351 |
| C/1998 M5 | 1999 03 16.53959 | 07 18 44.81 | +88 50 34.2 | 351 | ||
| C/1998 M5 | 1999 03 16.54273 | 07 18 50.67 | +88 50 23.3 | 351 | ||
| C/1998 M5 | 1999 03 16.55523 | 07 19 09.01 | +88 49 36.4 | 12.7 | T | 402 |
| C/1998 M5 | 1999 03 16.55649 | 07 19 11.22 | +88 49 31.8 | 402 |