| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 Y1 | 2000 08 14.77396 | 03 25 27.48 | +49 58 11.2 | 360 | ||
| C/1999 Y1 | 2000 08 19.05652 | 03 22 33.74 | +50 03 22.6 | 15.6 | N | 170 |
| C/1999 Y1 | 2000 08 20.02071 | 03 21 49.24 | +50 04 23.4 | 15.6 | N | 170 |
| C/1999 Y1 | 2000 08 21.98383 | 03 20 12.24 | +50 06 12.7 | 958 | ||
| C/1999 Y1 | 2000 08 21.99904 | 03 20 11.47 | +50 06 13.4 | 958 | ||
| C/1999 Y1 | 2000 08 22.02787 | 03 20 09.96 | +50 06 15.5 | 958 | ||
| C/1999 Y1 | 2000 08 23.09078 | 03 19 13.63 | +50 07 05.6 | 958 | ||
| C/1999 Y1 | 2000 08 23.13156 | 03 19 11.29 | +50 07 09.1 | 958 | ||
| C/1999 Y1 | 2000 08 23.17553 | 03 19 08.84 | +50 07 11.4 | 958 | ||
| C/1999 Y1 | 2000 08 24.13572 | 03 18 15.59 | +50 07 51.7 | 958 | ||
| C/1999 Y1 | 2000 08 24.15660 | 03 18 14.38 | +50 07 52.2 | 958 | ||
| C/1999 Y1 | 2000 08 24.18244 | 03 18 12.92 | +50 07 52.2 | 958 | ||
| C/1999 Y1 | 2000 08 25.06720 | 03 17 21.77 | +50 08 23.7 | 15.2 | N | 170 |
| C/1999 Y1 | 2000 08 25.19689 | 03 17 14.18 | +50 08 27.2 | 17.2 | T | 762 |
| C/1999 Y1 | 2000 08 25.20330 | 03 17 13.79 | +50 08 27.5 | 17.5 | T | 762 |
| C/1999 Y1 | 2000 08 25.21332 | 03 17 13.21 | +50 08 28.4 | 17.2 | T | 762 |
| C/1999 Y1 | 2000 08 25.68710 | 03 16 44.93 | +50 08 44.6 | 14.7 | T | 349 |
| C/1999 Y1 | 2000 08 25.68882 | 03 16 44.82 | +50 08 45.0 | 349 | ||
| C/1999 Y1 | 2000 08 25.69667 | 03 16 44.41 | +50 08 44.4 | 349 | ||
| C/1999 Y1 | 2000 08 25.94880 | 03 16 29.00 | +50 08 49.4 | 127 |