| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2011 08 01.01834 | 23 36 33.99 | -05 01 08.5 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 08 01.02985 | 23 36 33.30 | -05 01 26.1 | 15.7 | N | 958 |
| C/2009 Y1 | 2011 08 02.01663 | 23 35 30.04 | -05 26 55.8 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 08 02.02115 | 23 35 30.03 | -05 27 02.0 | 14.9 | N | 958 |
| C/2009 Y1 | 2011 08 02.02526 | 23 35 29.55 | -05 27 09.5 | 15.4 | N | 958 |
| C/2009 Y1 | 2011 08 02.04471 | 23 35 28.38 | -05 27 38.2 | 16.7 | N | B96 |
| C/2009 Y1 | 2011 08 02.04922 | 23 35 28.09 | -05 27 45.7 | 16.6 | N | B96 |
| C/2009 Y1 | 2011 08 02.05374 | 23 35 27.76 | -05 27 52.5 | 15.8 | N | B96 |
| C/2009 Y1 | 2011 08 02.05825 | 23 35 27.48 | -05 27 58.5 | 15.8 | N | B96 |
| C/2009 Y1 | 2011 08 02.06277 | 23 35 27.11 | -05 28 06.1 | 15.9 | N | B96 |
| C/2009 Y1 | 2011 08 02.06727 | 23 35 26.89 | -05 28 13.9 | 17.0 | N | B96 |
| C/2009 Y1 | 2011 08 02.07178 | 23 35 26.58 | -05 28 19.6 | 16.8 | N | B96 |
| C/2009 Y1 | 2011 08 03.08411 | 23 34 20.31 | -05 54 42.6 | 16.0 | N | 130 |
| C/2009 Y1 | 2011 08 03.08511 | 23 34 20.21 | -05 54 43.5 | 15.9 | N | 130 |
| C/2009 Y1 | 2011 08 03.08612 | 23 34 20.14 | -05 54 44.9 | 16.2 | N | 130 |
| C/2009 Y1 | 2011 08 03.08763 | 23 34 20.08 | -05 54 47.8 | 15.9 | N | 130 |
| C/2009 Y1 | 2011 08 03.41844 | 23 33 58.01 | -06 03 26.7 | 16.2 | N | H47 |
| C/2009 Y1 | 2011 08 03.42464 | 23 33 57.58 | -06 03 36.4 | 16.2 | N | H47 |
| C/2009 Y1 | 2011 08 03.42991 | 23 33 57.22 | -06 03 44.7 | 16.0 | N | H47 |
| C/2009 Y1 | 2011 08 04.00669 | 23 33 18.73 | -06 18 54.5 | 15.7 | N | 958 |