| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2010 12 27.09483 | 20 47 35.00 | +39 58 23.3 | H10 | ||
| C/2009 Y1 | 2010 12 27.09738 | 20 47 35.36 | +39 58 19.1 | 14.4 | N | H10 |
| C/2009 Y1 | 2010 12 27.40087 | 20 48 16.78 | +39 50 31.7 | 900 | ||
| C/2009 Y1 | 2010 12 27.40755 | 20 48 17.69 | +39 50 21.4 | 14.0 | T | 900 |
| C/2009 Y1 | 2010 12 28.35795 | 20 50 26.46 | +39 26 08.6 | 15.0 | N | D88 |
| C/2009 Y1 | 2010 12 28.35974 | 20 50 26.72 | +39 26 05.9 | D88 | ||
| C/2009 Y1 | 2010 12 28.36153 | 20 50 26.94 | +39 26 03.2 | D88 | ||
| C/2009 Y1 | 2010 12 28.76969 | 20 51 21.80 | +39 15 43.0 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 28.77290 | 20 51 22.28 | +39 15 38.4 | 14.3 | N | A77 |
| C/2009 Y1 | 2010 12 28.77906 | 20 51 23.09 | +39 15 28.3 | 14.0 | N | A77 |
| C/2009 Y1 | 2010 12 28.78035 | 20 51 23.18 | +39 15 26.1 | 14.6 | N | 958 |
| C/2009 Y1 | 2010 12 28.78522 | 20 51 23.83 | +39 15 20.0 | 14.1 | N | A77 |
| C/2009 Y1 | 2010 12 28.79158 | 20 51 24.69 | +39 15 09.8 | 14.6 | N | 958 |
| C/2009 Y1 | 2010 12 28.80281 | 20 51 26.26 | +39 14 52.9 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 28.81435 | 20 51 27.77 | +39 14 35.0 | 15.2 | N | 958 |
| C/2009 Y1 | 2010 12 28.82537 | 20 51 29.12 | +39 14 18.3 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 29.73529 | 20 53 30.47 | +38 51 30.9 | 14.2 | N | 235 |
| C/2009 Y1 | 2010 12 29.73977 | 20 53 31.07 | +38 51 24.2 | 15.1 | N | 235 |
| C/2009 Y1 | 2010 12 31.76344 | 20 57 56.11 | +38 01 40.2 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 31.77379 | 20 57 57.43 | +38 01 25.2 | 15.2 | N | 958 |