| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2010 12 31.78564 | 20 57 58.96 | +38 01 07.7 | 14.6 | N | 958 |
| C/2009 Y1 | 2010 12 31.79656 | 20 58 00.37 | +38 00 51.8 | 14.9 | N | 958 |
| C/2009 Y1 | 2010 12 31.79825 | 20 58 00.58 | +38 00 49.8 | 14.5 | N | J38 |
| C/2009 Y1 | 2010 12 31.80237 | 20 58 01.10 | +38 00 43.8 | 14.5 | N | J38 |
| C/2009 Y1 | 2010 12 31.80340 | 20 58 01.23 | +38 00 42.2 | 14.6 | N | J38 |
| C/2009 Y1 | 2010 12 31.80722 | 20 58 01.75 | +38 00 35.7 | 15.2 | N | 958 |
| C/2009 Y1 | 2010 12 31.81901 | 20 58 03.29 | +38 00 18.9 | 14.8 | N | 958 |
| C/2009 Y1 | 2010 12 31.83080 | 20 58 04.80 | +38 00 01.5 | 14.7 | N | 958 |
| C/2009 Y1 | 2011 01 01.48791 | 20 59 29.49 | +37 44 10.5 | 14.0 | T | 349 |
| C/2009 Y1 | 2011 01 01.49038 | 20 59 29.81 | +37 44 06.7 | 349 | ||
| C/2009 Y1 | 2011 01 02.38932 | 21 01 24.52 | +37 22 41.0 | 16.3 | N | D95 |
| C/2009 Y1 | 2011 01 02.39146 | 21 01 24.90 | +37 22 36.5 | 16.4 | N | D95 |
| C/2009 Y1 | 2011 01 02.39359 | 21 01 25.14 | +37 22 33.8 | 16.0 | N | D95 |
| C/2009 Y1 | 2011 01 02.39573 | 21 01 25.39 | +37 22 31.4 | 15.4 | N | D95 |
| C/2009 Y1 | 2011 01 02.47057 | 21 01 34.91 | +37 20 44.5 | 900 | ||
| C/2009 Y1 | 2011 01 02.47789 | 21 01 35.83 | +37 20 34.0 | 14.1 | T | 900 |
| C/2009 Y1 | 2011 01 02.72109 | 21 02 06.83 | +37 14 47.7 | 15.4 | N | C23 |
| C/2009 Y1 | 2011 01 02.73209 | 21 02 08.23 | +37 14 32.3 | 15.6 | N | C23 |
| C/2009 Y1 | 2011 01 02.74285 | 21 02 09.58 | +37 14 16.8 | 15.8 | N | C23 |
| C/2009 Y1 | 2011 01 02.75333 | 21 02 10.93 | +37 14 01.5 | 16.0 | N | C23 |