| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2010 04 10.15839 | 09 41 29.62 | +72 14 55.6 | C51 | ||
| C/2009 Y1 | 2010 04 10.22448 | 09 41 19.72 | +72 14 55.3 | C51 | ||
| C/2009 Y1 | 2010 04 10.29069 | 09 41 09.87 | +72 14 55.5 | C51 | ||
| C/2009 Y1 | 2010 04 10.42300 | 09 40 49.90 | +72 14 55.9 | C51 | ||
| C/2009 Y1 | 2010 04 10.55530 | 09 40 30.20 | +72 14 55.6 | C51 | ||
| C/2009 Y1 | 2010 04 10.96459 | 09 39 29.04 | +72 14 53.6 | 17.7 | N | J53 |
| C/2009 Y1 | 2010 04 10.96903 | 09 39 28.61 | +72 14 53.5 | 17.5 | N | J38 |
| C/2009 Y1 | 2010 04 10.97051 | 09 39 28.05 | +72 14 54.0 | 17.4 | N | J53 |
| C/2009 Y1 | 2010 04 10.97190 | 09 39 28.24 | +72 14 54.4 | 17.5 | N | J38 |
| C/2009 Y1 | 2010 04 10.97346 | 09 39 27.70 | +72 14 53.6 | 17.7 | N | J53 |
| C/2009 Y1 | 2010 04 10.98049 | 09 39 27.10 | +72 14 53.5 | 17.5 | N | J38 |
| C/2009 Y1 | 2010 04 11.37788 | 09 38 28.63 | +72 14 45.4 | 17.5 | T | H10 |
| C/2009 Y1 | 2010 04 11.39351 | 09 38 26.14 | +72 14 45.2 | 17.5 | T | H10 |
| C/2009 Y1 | 2010 04 11.40729 | 09 38 23.79 | +72 14 44.7 | 17.5 | T | H10 |
| C/2009 Y1 | 2010 04 14.95694 | 09 30 07.21 | +72 12 08.6 | 17.3 | N | J38 |
| C/2009 Y1 | 2010 04 14.96052 | 09 30 06.73 | +72 12 08.2 | 17.4 | N | J38 |
| C/2009 Y1 | 2010 04 14.96768 | 09 30 05.73 | +72 12 07.2 | 17.3 | N | J38 |
| C/2009 Y1 | 2010 04 14.98929 | 09 30 02.74 | +72 12 05.9 | 204 | ||
| C/2009 Y1 | 2010 04 14.99313 | 09 30 02.22 | +72 12 05.5 | 17.4 | N | 204 |
| C/2009 Y1 | 2010 04 26.90675 | 09 07 57.96 | +71 44 58.1 | 17.6 | N | J38 |