| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2011 05 31.97806 | 23 55 16.70 | +12 07 01.1 | 15.2 | N | 585 |
| C/2009 Y1 | 2011 05 31.98086 | 23 55 16.74 | +12 06 58.9 | 15.3 | N | 585 |
| C/2009 Y1 | 2011 05 31.98367 | 23 55 16.83 | +12 06 57.7 | 15.2 | N | 585 |
| C/2009 Y1 | 2011 05 31.98507 | 23 55 16.85 | +12 06 56.2 | 15.2 | N | 585 |
| C/2009 Y1 | 2011 05 31.98787 | 23 55 16.88 | +12 06 54.8 | 15.2 | N | 585 |
| C/2009 Y1 | 2011 05 31.98985 | 23 55 16.96 | +12 06 53.3 | 15.3 | N | 585 |
| C/2009 Y1 | 2011 05 31.99125 | 23 55 16.98 | +12 06 52.5 | 15.3 | N | 585 |
| C/2009 Y1 | 2011 05 31.99265 | 23 55 16.98 | +12 06 51.8 | 15.2 | N | 585 |
| C/2009 Y1 | 2011 05 31.99405 | 23 55 17.00 | +12 06 51.5 | 15.2 | N | 585 |
| C/2009 Y1 | 2011 05 31.99545 | 23 55 17.04 | +12 06 50.5 | 15.2 | N | 585 |
| C/2009 Y1 | 2011 06 03.11666 | 23 55 56.58 | +11 46 47.4 | 15.4 | N | 958 |
| C/2009 Y1 | 2011 06 03.12815 | 23 55 56.76 | +11 46 40.7 | 15.3 | N | 958 |
| C/2009 Y1 | 2011 06 03.13966 | 23 55 56.97 | +11 46 33.7 | 15.4 | N | 958 |
| C/2009 Y1 | 2011 06 08.42755 | 23 57 15.51 | +10 53 05.8 | 14.3 | T | 703 |
| C/2009 Y1 | 2011 06 08.43339 | 23 57 15.62 | +10 53 01.8 | 14.3 | T | 703 |
| C/2009 Y1 | 2011 06 08.43921 | 23 57 15.69 | +10 52 57.9 | 14.3 | T | 703 |
| C/2009 Y1 | 2011 06 08.44505 | 23 57 15.73 | +10 52 54.5 | 14.4 | T | 703 |
| C/2009 Y1 | 2011 06 08.74230 | 23 57 19.56 | +10 49 42.0 | 367 | ||
| C/2009 Y1 | 2011 06 08.74664 | 23 57 19.62 | +10 49 39.3 | 367 | ||
| C/2009 Y1 | 2011 06 08.75098 | 23 57 19.66 | +10 49 36.6 | 14.3 | T | 367 |
