| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1990 M1 | 1991 05 03.53534 | 13 56 04.05 | +30 42 51.0 | 14.0 | T | 372 |
| C/1990 M1 | 1991 05 11.12174 | 13 33 57.60 | +33 15 17.3 | 801 | ||
| C/1990 M1 | 1991 05 11.12462 | 13 33 57.11 | +33 15 20.4 | 801 | ||
| C/1990 M1 | 1991 05 12.17002 | 13 31 03.42 | +33 32 29.8 | 801 | ||
| C/1990 M1 | 1991 05 12.17416 | 13 31 02.74 | +33 32 33.8 | 801 | ||
| C/1990 M1 | 1991 05 17.10495 | 13 18 01.35 | +34 41 59.1 | 801 | ||
| C/1990 M1 | 1991 06 09.08516 | 12 33 19.98 | +36 59 57.1 | 801 | ||
| C/1990 M1 | 1991 06 09.12523 | 12 33 16.61 | +36 59 59.8 | 801 | ||
| C/1990 M1 | 1991 06 14.07972 | 12 27 03.95 | +37 04 13.3 | 801 | ||
| C/1990 M1 | 1991 06 14.10179 | 12 27 02.42 | +37 04 13.9 | 801 |
