| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2011 08 04.01771 | 23 33 17.96 | -06 19 12.5 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 08 04.02919 | 23 33 17.23 | -06 19 30.1 | 15.7 | N | 958 |
| C/2009 Y1 | 2011 08 04.03758 | 23 33 16.61 | -06 19 43.7 | 16.8 | N | B96 |
| C/2009 Y1 | 2011 08 04.04209 | 23 33 16.22 | -06 19 51.8 | 16.8 | N | B96 |
| C/2009 Y1 | 2011 08 04.04661 | 23 33 16.03 | -06 19 56.6 | 16.0 | N | B96 |
| C/2009 Y1 | 2011 08 04.05112 | 23 33 15.69 | -06 20 06.1 | 16.7 | N | B96 |
| C/2009 Y1 | 2011 08 04.05564 | 23 33 15.32 | -06 20 13.0 | 16.6 | N | B96 |
| C/2009 Y1 | 2011 08 04.06015 | 23 33 15.04 | -06 20 17.9 | 16.8 | N | B96 |
| C/2009 Y1 | 2011 08 04.06466 | 23 33 14.67 | -06 20 27.3 | 16.9 | N | B96 |
| C/2009 Y1 | 2011 08 04.08829 | 23 33 13.07 | -06 21 04.9 | 14.6 | N | A77 |
| C/2009 Y1 | 2011 08 04.09138 | 23 33 12.93 | -06 21 08.2 | 14.8 | N | A77 |
| C/2009 Y1 | 2011 08 04.42615 | 23 32 50.08 | -06 29 57.9 | 16.1 | N | H47 |
| C/2009 Y1 | 2011 08 04.42796 | 23 32 49.94 | -06 30 00.8 | 16.1 | N | H47 |
| C/2009 Y1 | 2011 08 04.42958 | 23 32 49.85 | -06 30 03.4 | 16.2 | N | H47 |
| C/2009 Y1 | 2011 08 04.99238 | 23 32 11.45 | -06 44 57.9 | 15.8 | N | 958 |
| C/2009 Y1 | 2011 08 04.99759 | 23 32 11.10 | -06 45 06.6 | 16.7 | N | C47 |
| C/2009 Y1 | 2011 08 05.00018 | 23 32 10.92 | -06 45 10.5 | 16.6 | N | C47 |
| C/2009 Y1 | 2011 08 05.00313 | 23 32 10.84 | -06 45 13.8 | 16.1 | N | 958 |
| C/2009 Y1 | 2011 08 05.01488 | 23 32 09.96 | -06 45 33.7 | 16.0 | N | 958 |
| C/2009 Y1 | 2011 08 05.02929 | 23 32 08.97 | -06 45 57.2 | 15.3 | N | J31 |