| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 Y1 | 2000 12 19.07289 | 23 52 52.28 | +15 31 04.1 | 17.8 | T | 704 |
| C/1999 Y1 | 2000 12 19.08533 | 23 52 52.04 | +15 30 46.7 | 16.4 | T | 704 |
| C/1999 Y1 | 2000 12 19.08796 | 23 52 51.99 | +15 30 42.8 | 17.9 | T | 704 |
| C/1999 Y1 | 2000 12 19.10068 | 23 52 51.60 | +15 30 27.8 | 17.5 | T | 704 |
| C/1999 Y1 | 2000 12 19.10347 | 23 52 51.66 | +15 30 24.3 | 17.9 | T | 704 |
| C/1999 Y1 | 2000 12 19.11595 | 23 52 51.54 | +15 30 07.6 | 17.7 | T | 704 |
| C/1999 Y1 | 2000 12 19.11868 | 23 52 51.39 | +15 30 03.7 | 18.3 | T | 704 |
| C/1999 Y1 | 2000 12 19.13115 | 23 52 51.11 | +15 29 46.9 | 16.0 | T | 704 |
| C/1999 Y1 | 2000 12 19.13391 | 23 52 51.01 | +15 29 43.8 | 17.5 | T | 704 |
| C/1999 Y1 | 2000 12 21.74034 | 23 51 59.61 | +14 37 14.2 | 611 | ||
| C/1999 Y1 | 2000 12 21.76032 | 23 51 59.22 | +14 36 50.7 | 611 | ||
| C/1999 Y1 | 2000 12 22.40488 | 23 51 48.25 | +14 24 14.8 | 13.2 | T | 900 |
| C/1999 Y1 | 2000 12 22.41251 | 23 51 48.12 | +14 24 06.4 | 900 | ||
| C/1999 Y1 | 2000 12 23.47101 | 23 51 31.31 | +14 03 42.5 | 13.6 | T | 349 |
| C/1999 Y1 | 2000 12 23.47244 | 23 51 31.30 | +14 03 41.2 | 349 | ||
| C/1999 Y1 | 2000 12 23.47373 | 23 51 31.24 | +14 03 39.0 | 349 | ||
| C/1999 Y1 | 2000 12 23.47596 | 23 51 31.23 | +14 03 36.4 | 349 | ||
| C/1999 Y1 | 2000 12 24.41372 | 23 51 17.86 | +13 45 54.0 | 12.9 | T | 351 |
| C/1999 Y1 | 2000 12 24.41932 | 23 51 17.78 | +13 45 48.1 | 12.8 | T | 351 |
| C/1999 Y1 | 2000 12 24.42581 | 23 51 17.67 | +13 45 39.3 | 12.8 | T | 351 |