| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 Y1 | 2000 02 27.47079 | 02 19 17.22 | +57 22 29.3 | 16.1 | T | 349 |
| C/1999 Y1 | 2000 02 29.43611 | 02 19 42.62 | +57 00 06.0 | 16.1 | T | 360 |
| C/1999 Y1 | 2000 02 29.43872 | 02 19 42.64 | +57 00 04.3 | 360 | ||
| C/1999 Y1 | 2000 03 01.47537 | 02 19 57.67 | +56 48 31.6 | 15.8 | T | 900 |
| C/1999 Y1 | 2000 03 01.48817 | 02 19 57.86 | +56 48 23.1 | 900 | ||
| C/1999 Y1 | 2000 03 02.43751 | 02 20 12.68 | +56 37 56.1 | 15.9 | T | 402 |
| C/1999 Y1 | 2000 03 02.43877 | 02 20 12.74 | +56 37 55.2 | 402 | ||
| C/1999 Y1 | 2000 03 02.44130 | 02 20 12.77 | +56 37 53.8 | 402 | ||
| C/1999 Y1 | 2000 03 02.46708 | 02 20 13.11 | +56 37 37.2 | 15.4 | T | 348 |
| C/1999 Y1 | 2000 03 02.47522 | 02 20 13.23 | +56 37 31.2 | 348 | ||
| C/1999 Y1 | 2000 03 09.43681 | 02 22 27.29 | +55 25 19.2 | 16.2 | T | 360 |
| C/1999 Y1 | 2000 03 09.43924 | 02 22 27.36 | +55 25 17.9 | 360 | ||
| C/1999 Y1 | 2000 03 12.46616 | 02 23 38.09 | +54 56 14.3 | 349 | ||
| C/1999 Y1 | 2000 03 12.47068 | 02 23 38.16 | +54 56 12.9 | 16.1 | T | 349 |
| C/1999 Y1 | 2000 03 12.47396 | 02 23 38.18 | +54 56 09.7 | 349 | ||
| C/1999 Y1 | 2000 03 25.44656 | 02 29 47.47 | +53 07 05.8 | 16.1 | T | 349 |
| C/1999 Y1 | 2000 03 25.45030 | 02 29 47.61 | +53 07 05.5 | 349 | ||
| C/1999 Y1 | 2000 03 25.45287 | 02 29 47.65 | +53 07 04.4 | 349 | ||
| C/1999 Y1 | 2000 03 30.43993 | 02 32 32.35 | +52 31 27.0 | 16.0 | T | 360 |
| C/1999 Y1 | 2000 03 30.44236 | 02 32 32.41 | +52 31 26.2 | 360 |