| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 Y1 | 1999 12 24.06550 | 03 33 38.35 | +72 47 45.9 | 17.3 | T | 652 |
| C/1999 Y1 | 1999 12 24.06719 | 03 33 38.08 | +72 47 45.8 | 16.7 | T | 652 |
| C/1999 Y1 | 1999 12 24.06865 | 03 33 37.51 | +72 47 44.7 | 17.1 | T | 652 |
| C/1999 Y1 | 1999 12 24.06952 | 03 33 37.32 | +72 47 44.0 | 17.1 | T | 726 |
| C/1999 Y1 | 1999 12 24.07646 | 03 33 35.87 | +72 47 39.6 | 17.1 | T | 726 |
| C/1999 Y1 | 1999 12 24.52323 | 03 32 02.33 | +72 42 39.8 | 16.6 | T | 900 |
| C/1999 Y1 | 1999 12 24.53604 | 03 31 59.64 | +72 42 30.7 | 900 | ||
| C/1999 Y1 | 1999 12 25.56219 | 03 28 30.20 | +72 30 41.9 | 16.7 | T | 900 |
| C/1999 Y1 | 1999 12 25.57330 | 03 28 28.20 | +72 30 33.1 | 900 | ||
| C/1999 Y1 | 1999 12 25.58578 | 03 28 25.43 | +72 30 24.3 | 355 | ||
| C/1999 Y1 | 1999 12 25.58917 | 03 28 24.72 | +72 30 22.1 | 355 | ||
| C/1999 Y1 | 1999 12 25.59262 | 03 28 24.08 | +72 30 20.1 | 355 | ||
| C/1999 Y1 | 1999 12 26.04153 | 03 26 54.82 | +72 25 01.7 | 17.2 | T | 726 |
| C/1999 Y1 | 1999 12 26.04500 | 03 26 54.12 | +72 24 59.8 | 17.5 | T | 726 |
| C/1999 Y1 | 1999 12 26.04847 | 03 26 53.44 | +72 24 56.4 | 17.1 | T | 726 |
| C/1999 Y1 | 1999 12 26.05194 | 03 26 52.67 | +72 24 54.5 | 17.1 | T | 726 |
| C/1999 Y1 | 1999 12 26.05542 | 03 26 52.11 | +72 24 52.0 | 17.3 | T | 726 |
| C/1999 Y1 | 1999 12 26.05888 | 03 26 51.22 | +72 24 49.3 | 17.2 | T | 726 |
| C/1999 Y1 | 1999 12 26.06513 | 03 26 50.03 | +72 24 45.5 | 17.1 | T | 726 |
| C/1999 Y1 | 1999 12 26.07207 | 03 26 48.66 | +72 24 40.1 | 17.2 | T | 726 |