| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1991 Y1 | 1992 01 23.39392 | 23 01 20.86 | -02 50 17.2 | 7.8 | T | 372 |
| C/1991 Y1 | 1992 01 23.39740 | 23 01 21.96 | -02 50 31.9 | 372 | ||
| C/1991 Y1 | 1992 01 23.40990 | 23 01 25.80 | -02 51 28.1 | 372 | ||
| C/1991 Y1 | 1992 01 24.38204 | 23 06 29.02 | -04 06 01.3 | 411 | ||
| C/1991 Y1 | 1992 01 24.38257 | 23 06 29.23 | -04 06 02.8 | 411 | ||
| C/1991 Y1 | 1992 01 24.38346 | 23 06 29.58 | -04 06 07.4 | 411 | ||
| C/1991 Y1 | 1992 01 24.38463 | 23 06 29.89 | -04 06 12.9 | 411 | ||
| C/1991 Y1 | 1992 01 24.38542 | 23 06 30.11 | -04 06 16.1 | 411 | ||
| C/1991 Y1 | 1992 01 24.38889 | 23 06 31.11 | -04 06 33.3 | 8.0 | T | 372 |
| C/1991 Y1 | 1992 01 24.39236 | 23 06 32.26 | -04 06 50.2 | 372 | ||
| C/1991 Y1 | 1992 01 24.39583 | 23 06 33.29 | -04 07 06.4 | 372 | ||
| C/1991 Y1 | 1992 01 24.40000 | 23 06 34.56 | -04 07 25.9 | 372 | ||
| C/1991 Y1 | 1992 01 28.38102 | 23 27 10.23 | -09 34 39.7 | 897 | ||
| C/1991 Y1 | 1992 01 28.38252 | 23 27 10.76 | -09 34 46.9 | 897 | ||
| C/1991 Y1 | 1992 01 28.38501 | 23 27 11.55 | -09 35 00.0 | 897 | ||
| C/1991 Y1 | 1992 01 30.76528 | 23 39 17.99 | -13 04 16.6 | 006 | ||
| C/1991 Y1 | 1992 01 31.76111 | 23 44 17.84 | -14 33 58.0 | 006 | ||
| C/1991 Y1 | 1992 01 31.76875 | 23 44 20.02 | -14 34 43.0 | 006 | ||
| C/1991 Y1 | 1992 02 01.37992 | 23 47 22.39 | -15 30 13.6 | 411 | ||
| C/1991 Y1 | 1992 02 01.38037 | 23 47 22.55 | -15 30 16.4 | 411 |