| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2021 Y1 | 2021 11 08.09548 | 01 55 20.47 | +64 28 52.3 | 18.8 | G | W16 |
| C/2021 Y1 | 2021 11 08.10368 | 01 55 19.80 | +64 28 49.3 | 19.0 | G | W16 |
| C/2021 Y1 | 2021 11 08.11179 | 01 55 19.25 | +64 28 45.8 | 19.1 | G | W16 |
| C/2021 Y1 | 2021 11 08.11972 | 01 55 18.62 | +64 28 42.4 | 19.2 | G | W16 |
| C/2021 Y1 | 2021 11 24.02202 | 01 38 23.47 | +62 17 40.6 | 18.9 | G | W16 |
| C/2021 Y1 | 2021 11 24.03010 | 01 38 23.06 | +62 17 35.2 | 18.3 | G | W16 |
| C/2021 Y1 | 2021 11 24.03813 | 01 38 22.54 | +62 17 30.9 | 19.0 | G | W16 |
| C/2021 Y1 | 2021 11 24.04616 | 01 38 22.08 | +62 17 26.4 | 19.0 | G | W16 |
| C/2021 Y1 | 2021 12 26.28501 | 01 22 11.22 | +56 15 19.9 | 19.0 | o | T08 |
| C/2021 Y1 | 2021 12 26.28823 | 01 22 11.26 | +56 15 19.0 | 18.8 | o | T08 |
| C/2021 Y1 | 2021 12 26.28916 | 01 22 11.31 | +56 15 18.2 | 18.7 | o | T08 |
| C/2021 Y1 | 2021 12 26.29425 | 01 22 11.28 | +56 15 14.8 | 18.8 | o | T08 |
| C/2021 Y1 | 2021 12 26.30485 | 01 22 10.96 | +56 15 06.9 | 18.9 | o | T08 |
| C/2021 Y1 | 2021 12 26.71458 | 01 22 08.91 | +56 10 12.0 | 18.4 | R | B15 |
| C/2021 Y1 | 2021 12 26.71683 | 01 22 08.91 | +56 10 10.3 | 18.4 | R | B15 |
| C/2021 Y1 | 2021 12 26.71907 | 01 22 08.92 | +56 10 08.8 | 18.3 | R | B15 |
| C/2021 Y1 | 2021 12 26.72169 | 01 22 08.89 | +56 10 07.0 | 18.3 | R | B15 |
| C/2021 Y1 | 2021 12 26.88281 | 01 22 07.82 | +56 08 11.1 | 17.8 | G | C95 |
| C/2021 Y1 | 2021 12 26.89266 | 01 22 07.76 | +56 08 04.1 | 17.6 | G | C95 |
| C/2021 Y1 | 2021 12 26.91048 | 01 22 07.61 | +56 07 51.5 | 18.4 | G | C95 |