| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2011 07 12.59600 | 23 52 08.96 | +02 24 34.8 | 16.9 | T | F51 |
| C/2009 Y1 | 2011 07 12.60485 | 23 52 08.65 | +02 24 24.2 | 16.9 | T | F51 |
| C/2009 Y1 | 2011 07 15.01287 | 23 50 44.77 | +01 35 29.1 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 07 15.02350 | 23 50 44.49 | +01 35 15.8 | 15.7 | N | 958 |
| C/2009 Y1 | 2011 07 15.03560 | 23 50 44.01 | +01 35 00.4 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 07 23.05250 | 23 44 59.11 | -01 21 15.8 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 07 23.06432 | 23 44 58.47 | -01 21 32.2 | 15.8 | N | 958 |
| C/2009 Y1 | 2011 07 23.07467 | 23 44 57.90 | -01 21 46.3 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 07 28.10731 | 23 40 29.57 | -03 22 32.2 | 15.9 | N | 958 |
| C/2009 Y1 | 2011 07 28.11866 | 23 40 28.86 | -03 22 48.7 | 15.8 | N | 958 |
| C/2009 Y1 | 2011 07 28.12994 | 23 40 28.22 | -03 23 05.1 | 15.8 | N | 958 |
| C/2009 Y1 | 2011 07 28.30966 | 23 40 18.01 | -03 27 31.6 | 16.6 | N | H45 |
| C/2009 Y1 | 2011 07 28.31231 | 23 40 17.84 | -03 27 35.6 | 16.6 | N | H45 |
| C/2009 Y1 | 2011 07 28.31413 | 23 40 17.74 | -03 27 38.3 | 16.7 | N | H45 |
| C/2009 Y1 | 2011 07 28.31539 | 23 40 17.67 | -03 27 40.2 | 15.1 | T | H45 |
| C/2009 Y1 | 2011 07 28.31725 | 23 40 17.56 | -03 27 42.9 | 15.2 | T | H45 |
| C/2009 Y1 | 2011 07 28.31899 | 23 40 17.46 | -03 27 45.5 | 15.1 | T | H45 |
| C/2009 Y1 | 2011 07 29.09195 | 23 39 32.38 | -03 46 59.0 | 15.7 | T | B51 |
| C/2009 Y1 | 2011 07 29.09490 | 23 39 32.19 | -03 47 03.1 | 15.7 | T | B51 |
| C/2009 Y1 | 2011 07 29.13011 | 23 39 30.15 | -03 47 56.6 | 14.4 | N | 958 |