| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2011 06 17.05185 | 23 58 19.25 | +09 13 35.8 | 15.9 | N | 958 |
| C/2009 Y1 | 2011 06 17.06333 | 23 58 19.32 | +09 13 24.6 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 06 17.07483 | 23 58 19.32 | +09 13 17.7 | 15.8 | N | 958 |
| C/2009 Y1 | 2011 06 20.09363 | 23 58 21.21 | +08 34 26.5 | 15.7 | N | 958 |
| C/2009 Y1 | 2011 06 20.10452 | 23 58 21.16 | +08 34 17.3 | 15.8 | N | 958 |
| C/2009 Y1 | 2011 06 20.11540 | 23 58 21.15 | +08 34 09.9 | 15.8 | N | 958 |
| C/2009 Y1 | 2011 06 21.10215 | 23 58 19.18 | +08 20 57.2 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 06 21.11268 | 23 58 19.20 | +08 20 47.2 | 15.4 | N | 958 |
| C/2009 Y1 | 2011 06 21.12477 | 23 58 19.01 | +08 20 38.0 | 15.6 | N | 958 |
| C/2009 Y1 | 2011 06 21.69048 | 23 58 17.60 | +08 12 58.0 | 14.8 | T | 349 |
| C/2009 Y1 | 2011 06 21.69484 | 23 58 17.59 | +08 12 54.4 | 349 | ||
| C/2009 Y1 | 2011 06 21.69922 | 23 58 17.57 | +08 12 51.0 | 349 | ||
| C/2009 Y1 | 2011 06 24.17380 | 23 58 05.53 | +07 38 16.0 | 15.4 | N | J24 |
| C/2009 Y1 | 2011 06 24.17673 | 23 58 05.52 | +07 38 13.6 | 15.4 | N | J24 |
| C/2009 Y1 | 2011 06 24.18179 | 23 58 05.49 | +07 38 08.9 | 14.5 | N | J24 |
| C/2009 Y1 | 2011 06 25.08518 | 23 57 59.16 | +07 25 05.6 | 15.2 | N | I99 |
| C/2009 Y1 | 2011 06 25.08797 | 23 57 59.10 | +07 25 04.1 | 15.7 | N | 958 |
| C/2009 Y1 | 2011 06 25.09092 | 23 57 59.12 | +07 25 01.7 | 15.4 | N | I99 |
| C/2009 Y1 | 2011 06 25.09475 | 23 57 59.03 | +07 24 57.7 | 15.2 | N | I99 |
| C/2009 Y1 | 2011 06 25.09875 | 23 57 59.01 | +07 24 54.7 | 15.6 | N | 958 |