| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 Y1 | 1999 12 28.14991 | 03 20 09.79 | +71 59 17.9 | 17.6 | T | 704 |
| C/1999 Y1 | 1999 12 28.16636 | 03 20 07.09 | +71 59 05.8 | 17.5 | T | 704 |
| C/1999 Y1 | 1999 12 28.18297 | 03 20 03.87 | +71 58 52.8 | 18.3 | T | 704 |
| C/1999 Y1 | 1999 12 28.20039 | 03 20 00.41 | +71 58 39.9 | 17.7 | T | 704 |
| C/1999 Y1 | 1999 12 28.21583 | 03 19 57.46 | +71 58 28.4 | 17.7 | T | 704 |
| C/1999 Y1 | 1999 12 29.58601 | 03 15 49.26 | +71 40 57.6 | 16.9 | T | 402 |
| C/1999 Y1 | 1999 12 29.58727 | 03 15 49.04 | +71 40 56.4 | 402 | ||
| C/1999 Y1 | 1999 12 29.58853 | 03 15 48.85 | +71 40 55.6 | 402 | ||
| C/1999 Y1 | 1999 12 29.66900 | 03 15 34.61 | +71 39 52.8 | 16.4 | T | 349 |
| C/1999 Y1 | 1999 12 29.67330 | 03 15 33.76 | +71 39 49.0 | 349 | ||
| C/1999 Y1 | 1999 12 29.68463 | 03 15 31.58 | +71 39 40.0 | 349 | ||
| C/1999 Y1 | 1999 12 30.52031 | 03 13 06.51 | +71 28 43.9 | 16.7 | T | 351 |
| C/1999 Y1 | 1999 12 30.52869 | 03 13 05.38 | +71 28 38.6 | 351 | ||
| C/1999 Y1 | 1999 12 30.53568 | 03 13 03.28 | +71 28 30.5 | 351 | ||
| C/1999 Y1 | 1999 12 30.60803 | 03 12 51.25 | +71 27 34.6 | 16.7 | T | 900 |
| C/1999 Y1 | 1999 12 30.62068 | 03 12 49.11 | +71 27 24.1 | 900 | ||
| C/1999 Y1 | 1999 12 31.46617 | 03 10 26.90 | +71 16 06.3 | 16.6 | T | 897 |
| C/1999 Y1 | 1999 12 31.48066 | 03 10 24.47 | +71 15 54.9 | 897 | ||
| C/1999 Y1 | 2000 01 03.09149 | 03 03 31.03 | +70 39 55.6 | 15.9 | N | 681 |
| C/1999 Y1 | 2000 01 03.13403 | 03 03 24.55 | +70 39 19.7 | 16.1 | N | 681 |
