| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2009 Y1 | 2010 03 20.97372 | 10 38 50.52 | +71 03 27.2 | 18.6 | N | 954 |
| C/2009 Y1 | 2010 03 20.98591 | 10 38 48.27 | +71 03 32.1 | 18.6 | N | 954 |
| C/2009 Y1 | 2010 03 20.99810 | 10 38 46.07 | +71 03 37.9 | 18.6 | N | 954 |
| C/2009 Y1 | 2010 03 23.30803 | 10 31 54.82 | +71 19 54.0 | 17.5 | T | H45 |
| C/2009 Y1 | 2010 03 23.30942 | 10 31 54.48 | +71 19 54.6 | 17.7 | T | H45 |
| C/2009 Y1 | 2010 03 23.31065 | 10 31 54.23 | +71 19 55.2 | 17.5 | T | H45 |
| C/2009 Y1 | 2010 03 23.31180 | 10 31 54.05 | +71 19 55.7 | 17.7 | T | H45 |
| C/2009 Y1 | 2010 03 23.31365 | 10 31 53.79 | +71 19 56.5 | 17.7 | T | H45 |
| C/2009 Y1 | 2010 03 23.31483 | 10 31 53.47 | +71 19 56.8 | 17.7 | T | H45 |
| C/2009 Y1 | 2010 03 26.61490 | 10 22 04.33 | +71 39 16.7 | 900 | ||
| C/2009 Y1 | 2010 03 26.62168 | 10 22 03.10 | +71 39 18.4 | 18.5 | T | 900 |
| C/2009 Y1 | 2010 03 27.85482 | 10 18 24.10 | +71 45 22.7 | 18.9 | N | J28 |
| C/2009 Y1 | 2010 03 27.87341 | 10 18 20.83 | +71 45 28.0 | 18.8 | N | J28 |
| C/2009 Y1 | 2010 03 27.96640 | 10 18 03.83 | +71 45 53.4 | 17.9 | N | B18 |
| C/2009 Y1 | 2010 03 27.96779 | 10 18 03.61 | +71 45 53.7 | 18.0 | N | B18 |
| C/2009 Y1 | 2010 03 27.96920 | 10 18 03.37 | +71 45 54.3 | 18.0 | N | B18 |
| C/2009 Y1 | 2010 03 27.97059 | 10 18 03.10 | +71 45 54.4 | 18.1 | N | B18 |
| C/2009 Y1 | 2010 03 27.97198 | 10 18 02.90 | +71 45 54.9 | 18.1 | N | B18 |
| C/2009 Y1 | 2010 03 28.21471 | 10 17 20.51 | +71 47 02.6 | 18.2 | T | 704 |
| C/2009 Y1 | 2010 03 28.22508 | 10 17 18.28 | +71 47 05.5 | 18.9 | T | 704 |