| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2010 12 05.39551 | 19 50 04.65 | +50 18 08.1 | 14.0 | T | 349 |
| C/2009 Y1 | 2010 12 05.39847 | 19 50 05.19 | +50 18 02.7 | 349 | ||
| C/2009 Y1 | 2010 12 05.40145 | 19 50 05.74 | +50 17 57.2 | 349 | ||
| C/2009 Y1 | 2010 12 06.04702 | 19 52 05.27 | +49 58 12.6 | 15.3 | N | H45 |
| C/2009 Y1 | 2010 12 06.04830 | 19 52 05.56 | +49 58 10.4 | 15.3 | N | H45 |
| C/2009 Y1 | 2010 12 06.04974 | 19 52 05.76 | +49 58 07.5 | 15.2 | N | H45 |
| C/2009 Y1 | 2010 12 06.05062 | 19 52 05.91 | +49 58 05.8 | 15.2 | N | H45 |
| C/2009 Y1 | 2010 12 06.05143 | 19 52 06.05 | +49 58 04.2 | 15.2 | N | H45 |
| C/2009 Y1 | 2010 12 06.05256 | 19 52 06.25 | +49 58 02.2 | 15.1 | N | H45 |
| C/2009 Y1 | 2010 12 06.05356 | 19 52 06.45 | +49 58 00.2 | 15.2 | N | H45 |
| C/2009 Y1 | 2010 12 06.83280 | 19 54 29.08 | +49 34 13.5 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 06.84180 | 19 54 30.74 | +49 33 56.6 | 14.7 | N | 958 |
| C/2009 Y1 | 2010 12 06.85034 | 19 54 32.28 | +49 33 41.1 | 14.7 | N | 958 |
| C/2009 Y1 | 2010 12 08.83486 | 20 00 27.72 | +48 33 27.7 | 15.8 | N | C23 |
| C/2009 Y1 | 2010 12 08.83992 | 20 00 28.63 | +48 33 17.6 | 16.0 | N | C23 |
| C/2009 Y1 | 2010 12 08.84413 | 20 00 29.33 | +48 33 09.9 | 16.1 | N | C23 |
| C/2009 Y1 | 2010 12 08.85045 | 20 00 30.48 | +48 32 58.6 | 15.6 | N | C23 |
| C/2009 Y1 | 2010 12 09.78331 | 20 03 13.47 | +48 04 55.4 | 14.7 | N | 958 |
| C/2009 Y1 | 2010 12 09.79079 | 20 03 14.73 | +48 04 42.7 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 09.79826 | 20 03 16.04 | +48 04 28.1 | 14.8 | N | 958 |