| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 Y1 | 2000 09 26.22483 | 02 23 17.21 | +48 32 48.7 | 642 | ||
| C/1999 Y1 | 2000 09 26.71563 | 02 22 07.14 | +48 28 32.6 | 13.5 | T | 360 |
| C/1999 Y1 | 2000 09 26.71840 | 02 22 06.73 | +48 28 31.3 | 360 | ||
| C/1999 Y1 | 2000 09 27.22039 | 02 20 55.03 | +48 23 57.7 | 642 | ||
| C/1999 Y1 | 2000 09 27.22262 | 02 20 54.75 | +48 23 56.7 | 642 | ||
| C/1999 Y1 | 2000 09 27.22459 | 02 20 54.44 | +48 23 55.7 | 642 | ||
| C/1999 Y1 | 2000 09 27.24016 | 02 20 51.96 | +48 23 47.8 | 750 | ||
| C/1999 Y1 | 2000 09 27.24963 | 02 20 50.79 | +48 23 43.0 | 15.0 | T | 750 |
| C/1999 Y1 | 2000 09 27.26001 | 02 20 49.18 | +48 23 36.7 | 750 | ||
| C/1999 Y1 | 2000 09 27.72814 | 02 19 41.53 | +48 19 16.8 | 13.6 | T | 349 |
| C/1999 Y1 | 2000 09 27.72950 | 02 19 41.33 | +48 19 16.1 | 349 | ||
| C/1999 Y1 | 2000 09 27.73160 | 02 19 41.05 | +48 19 15.1 | 349 | ||
| C/1999 Y1 | 2000 09 29.71531 | 02 14 50.14 | +47 59 33.3 | 13.6 | T | 349 |
| C/1999 Y1 | 2000 09 29.71772 | 02 14 49.82 | +47 59 31.9 | 349 | ||
| C/1999 Y1 | 2000 09 29.72096 | 02 14 49.33 | +47 59 29.9 | 349 | ||
| C/1999 Y1 | 2000 09 30.20800 | 02 13 37.30 | +47 54 20.4 | 921 | ||
| C/1999 Y1 | 2000 09 30.23679 | 02 13 32.70 | +47 54 00.6 | 12.6 | T | 921 |
| C/1999 Y1 | 2000 09 30.85282 | 02 12 00.46 | +47 47 16.4 | 970 | ||
| C/1999 Y1 | 2000 09 30.86457 | 02 11 58.73 | +47 47 08.5 | 970 | ||
| C/1999 Y1 | 2000 09 30.87701 | 02 11 56.84 | +47 47 00.5 | 970 |