| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2010 12 25.78282 | 20 44 34.16 | +40 32 24.9 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 25.79231 | 20 44 35.48 | +40 32 09.9 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 25.79535 | 20 44 35.93 | +40 32 04.5 | 14.5 | N | B82 |
| C/2009 Y1 | 2010 12 25.79616 | 20 44 36.01 | +40 32 03.1 | 14.7 | N | B82 |
| C/2009 Y1 | 2010 12 25.79697 | 20 44 36.10 | +40 32 02.4 | 14.5 | N | B82 |
| C/2009 Y1 | 2010 12 25.80181 | 20 44 36.82 | +40 31 55.0 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 25.81225 | 20 44 38.23 | +40 31 38.6 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 25.87308 | 20 44 46.80 | +40 30 04.0 | 14.8 | N | J38 |
| C/2009 Y1 | 2010 12 25.87405 | 20 44 46.85 | +40 30 02.5 | 14.7 | N | J38 |
| C/2009 Y1 | 2010 12 25.87601 | 20 44 47.11 | +40 29 59.0 | 14.8 | N | J38 |
| C/2009 Y1 | 2010 12 26.76079 | 20 46 49.32 | +40 07 00.0 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 26.77145 | 20 46 50.75 | +40 06 44.1 | 14.7 | N | 958 |
| C/2009 Y1 | 2010 12 26.78099 | 20 46 52.02 | +40 06 28.2 | 14.8 | N | 213 |
| C/2009 Y1 | 2010 12 26.78268 | 20 46 52.27 | +40 06 26.1 | 14.6 | N | 958 |
| C/2009 Y1 | 2010 12 26.79391 | 20 46 53.80 | +40 06 08.7 | 15.0 | N | 958 |
| C/2009 Y1 | 2010 12 26.79852 | 20 46 54.40 | +40 06 00.6 | 14.8 | N | 213 |
| C/2009 Y1 | 2010 12 26.80513 | 20 46 55.36 | +40 05 50.9 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 26.80729 | 20 46 55.66 | +40 05 47.3 | 14.9 | N | 213 |
| C/2009 Y1 | 2010 12 26.81748 | 20 46 57.04 | +40 05 31.8 | 14.6 | N | 958 |
| C/2009 Y1 | 2010 12 27.09226 | 20 47 34.66 | +39 58 27.2 | 13.3 | T | H10 |