| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1991 Y1 | 1992 01 11.36892 | 22 00 48.10 | +09 15 49.8 | 411 | ||
| C/1991 Y1 | 1992 01 11.36947 | 22 00 48.24 | +09 15 48.1 | 411 | ||
| C/1991 Y1 | 1992 01 11.37049 | 22 00 48.58 | +09 15 44.4 | 411 | ||
| C/1991 Y1 | 1992 01 11.37106 | 22 00 48.74 | +09 15 44.0 | 411 | ||
| C/1991 Y1 | 1992 01 11.37161 | 22 00 48.87 | +09 15 41.8 | 411 | ||
| C/1991 Y1 | 1992 01 11.37220 | 22 00 49.05 | +09 15 39.8 | 411 | ||
| C/1991 Y1 | 1992 01 13.38949 | 22 10 31.34 | +07 38 15.5 | 411 | ||
| C/1991 Y1 | 1992 01 13.39002 | 22 10 31.39 | +07 38 13.7 | 411 | ||
| C/1991 Y1 | 1992 01 13.39126 | 22 10 31.77 | +07 38 10.5 | 411 | ||
| C/1991 Y1 | 1992 01 13.39184 | 22 10 31.96 | +07 38 07.3 | 411 | ||
| C/1991 Y1 | 1992 01 13.39240 | 22 10 31.99 | +07 38 08.1 | 411 | ||
| C/1991 Y1 | 1992 01 19.37517 | 22 40 32.79 | +01 52 40.9 | 411 | ||
| C/1991 Y1 | 1992 01 19.37573 | 22 40 32.98 | +01 52 39.2 | 411 | ||
| C/1991 Y1 | 1992 01 19.37628 | 22 40 33.17 | +01 52 37.2 | 411 | ||
| C/1991 Y1 | 1992 01 19.37684 | 22 40 33.28 | +01 52 35.4 | 411 | ||
| C/1991 Y1 | 1992 01 19.38188 | 22 40 34.91 | +01 52 15.5 | 411 | ||
| C/1991 Y1 | 1992 01 19.38247 | 22 40 35.06 | +01 52 13.3 | 411 | ||
| C/1991 Y1 | 1992 01 19.38420 | 22 40 35.60 | +01 52 07.2 | 411 | ||
| C/1991 Y1 | 1992 01 19.38608 | 22 40 36.16 | +01 51 59.6 | 411 | ||
| C/1991 Y1 | 1992 01 20.43490 | 22 46 00.21 | +00 42 05.4 | 7.5 | T | 372 |