| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2011 08 09.03789 | 23 27 21.80 | -08 33 36.0 | 16.1 | N | 585 |
| C/2009 Y1 | 2011 08 09.04020 | 23 27 21.53 | -08 33 39.4 | 16.2 | N | 585 |
| C/2009 Y1 | 2011 08 09.04308 | 23 27 21.42 | -08 33 43.8 | 16.2 | N | 585 |
| C/2009 Y1 | 2011 08 09.04453 | 23 27 21.31 | -08 33 46.6 | 16.1 | N | 585 |
| C/2009 Y1 | 2011 08 09.04524 | 23 27 21.27 | -08 33 47.1 | 16.1 | N | 585 |
| C/2009 Y1 | 2011 08 09.04812 | 23 27 21.10 | -08 33 52.0 | 15.9 | N | 958 |
| C/2009 Y1 | 2011 08 09.05848 | 23 27 20.35 | -08 34 08.8 | 15.4 | N | 958 |
| C/2009 Y1 | 2011 08 09.07125 | 23 27 19.43 | -08 34 30.3 | 14.7 | N | 958 |
| C/2009 Y1 | 2011 08 09.43866 | 23 26 51.84 | -08 44 28.0 | 15.3 | N | H47 |
| C/2009 Y1 | 2011 08 09.44291 | 23 26 51.60 | -08 44 33.6 | 15.5 | N | H47 |
| C/2009 Y1 | 2011 08 09.44660 | 23 26 51.37 | -08 44 41.3 | 15.7 | N | H47 |
| C/2009 Y1 | 2011 08 09.92166 | 23 26 15.88 | -08 57 36.8 | C71 | ||
| C/2009 Y1 | 2011 08 09.95870 | 23 26 13.16 | -08 58 36.6 | 15.6 | N | I99 |
| C/2009 Y1 | 2011 08 09.96524 | 23 26 12.58 | -08 58 48.3 | C71 | ||
| C/2009 Y1 | 2011 08 09.96568 | 23 26 12.53 | -08 58 49.8 | 15.4 | N | I99 |
| C/2009 Y1 | 2011 08 09.96801 | 23 26 12.49 | -08 58 53.3 | 15.4 | N | I99 |
| C/2009 Y1 | 2011 08 09.99414 | 23 26 10.38 | -08 59 35.7 | C71 | ||
| C/2009 Y1 | 2011 08 10.00880 | 23 26 09.25 | -08 59 59.7 | 15.5 | N | 958 |
| C/2009 Y1 | 2011 08 10.02052 | 23 26 08.37 | -09 00 18.7 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 08 10.02422 | 23 26 08.06 | -09 00 25.3 | 16.1 | N | J59 |