| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2010 12 13.78873 | 20 14 28.32 | +46 05 59.5 | 14.7 | N | 958 |
| C/2009 Y1 | 2010 12 13.81162 | 20 14 32.08 | +46 05 19.0 | 14.7 | N | 958 |
| C/2009 Y1 | 2010 12 13.83470 | 20 14 35.86 | +46 04 38.4 | 15.5 | N | 958 |
| C/2009 Y1 | 2010 12 14.78243 | 20 17 09.66 | +45 36 58.8 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 14.80432 | 20 17 13.18 | +45 36 20.4 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 14.82090 | 20 17 15.83 | +45 35 52.4 | 14.6 | N | J24 |
| C/2009 Y1 | 2010 12 14.82295 | 20 17 16.18 | +45 35 48.7 | 14.7 | N | J24 |
| C/2009 Y1 | 2010 12 14.82368 | 20 17 16.27 | +45 35 46.5 | 14.6 | N | B74 |
| C/2009 Y1 | 2010 12 14.82398 | 20 17 16.34 | +45 35 46.8 | 14.6 | N | J24 |
| C/2009 Y1 | 2010 12 14.82790 | 20 17 16.94 | +45 35 39.0 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 14.83191 | 20 17 17.59 | +45 35 32.0 | 14.7 | N | B74 |
| C/2009 Y1 | 2010 12 14.83377 | 20 17 17.90 | +45 35 29.3 | 14.7 | N | J38 |
| C/2009 Y1 | 2010 12 14.83645 | 20 17 18.30 | +45 35 24.2 | 14.7 | N | B74 |
| C/2009 Y1 | 2010 12 14.83650 | 20 17 18.34 | +45 35 24.5 | 14.7 | N | J38 |
| C/2009 Y1 | 2010 12 14.83832 | 20 17 18.65 | +45 35 21.2 | 14.7 | N | J38 |
| C/2009 Y1 | 2010 12 15.72701 | 20 19 40.90 | +45 09 37.1 | 14.3 | N | A77 |
| C/2009 Y1 | 2010 12 15.73630 | 20 19 42.35 | +45 09 20.9 | 14.3 | N | A77 |
| C/2009 Y1 | 2010 12 15.78501 | 20 19 50.04 | +45 07 56.1 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 15.80690 | 20 19 53.52 | +45 07 18.0 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 15.83020 | 20 19 57.19 | +45 06 37.0 | 14.9 | N | 958 |