| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2011 05 17.14115 | 23 48 45.48 | +14 08 54.9 | 15.2 | N | 958 |
| C/2009 Y1 | 2011 05 18.11772 | 23 49 16.90 | +14 01 43.7 | 15.1 | N | 958 |
| C/2009 Y1 | 2011 05 18.13008 | 23 49 17.32 | +14 01 37.9 | 15.2 | N | 958 |
| C/2009 Y1 | 2011 05 18.14249 | 23 49 17.66 | +14 01 31.9 | 15.1 | N | 958 |
| C/2009 Y1 | 2011 05 18.73066 | 23 49 36.18 | +13 57 09.1 | 14.9 | T | 349 |
| C/2009 Y1 | 2011 05 18.73492 | 23 49 36.33 | +13 57 07.5 | 349 | ||
| C/2009 Y1 | 2011 05 23.11212 | 23 51 45.56 | +13 23 19.3 | 15.2 | N | 958 |
| C/2009 Y1 | 2011 05 23.12359 | 23 51 45.94 | +13 23 13.2 | 15.2 | N | 958 |
| C/2009 Y1 | 2011 05 23.13508 | 23 51 46.23 | +13 23 06.8 | 15.0 | N | 958 |
| C/2009 Y1 | 2011 05 24.10710 | 23 52 12.82 | +13 15 17.4 | 15.3 | N | 958 |
| C/2009 Y1 | 2011 05 24.11859 | 23 52 13.25 | +13 15 11.4 | 15.2 | N | 958 |
| C/2009 Y1 | 2011 05 24.13009 | 23 52 13.46 | +13 15 05.8 | 15.3 | N | 958 |
| C/2009 Y1 | 2011 05 28.42964 | 23 54 00.80 | +12 38 55.7 | 15.2 | N | H10 |
| C/2009 Y1 | 2011 05 28.43145 | 23 54 00.83 | +12 38 54.7 | 15.3 | N | H10 |
| C/2009 Y1 | 2011 05 29.08830 | 23 54 15.76 | +12 33 08.6 | 15.3 | N | 958 |
| C/2009 Y1 | 2011 05 29.10064 | 23 54 16.05 | +12 33 02.1 | 15.1 | N | 958 |
| C/2009 Y1 | 2011 05 29.11295 | 23 54 16.32 | +12 32 55.6 | 15.2 | N | 958 |
| C/2009 Y1 | 2011 05 30.42602 | 23 54 44.96 | +12 21 13.8 | H06 | ||
| C/2009 Y1 | 2011 05 30.42792 | 23 54 44.99 | +12 21 12.4 | H06 | ||
| C/2009 Y1 | 2011 05 30.42981 | 23 54 45.03 | +12 21 11.7 | 13.8 | T | H06 |