| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2021 Y1 | 2021 12 31.51697 | 01 21 58.19 | +55 12 54.4 | 19.0 | V | P87 |
| C/2021 Y1 | 2021 12 31.70082 | 01 21 58.58 | +55 10 42.2 | 18.2 | R | K87 |
| C/2021 Y1 | 2021 12 31.70259 | 01 21 58.56 | +55 10 42.0 | 19.0 | V | 587 |
| C/2021 Y1 | 2021 12 31.70470 | 01 21 58.57 | +55 10 40.8 | 19.3 | V | 587 |
| C/2021 Y1 | 2021 12 31.70550 | 01 21 58.55 | +55 10 39.0 | 18.3 | R | K87 |
| C/2021 Y1 | 2021 12 31.70924 | 01 21 58.57 | +55 10 37.1 | 18.3 | R | K87 |
| C/2021 Y1 | 2021 12 31.71207 | 01 21 58.59 | +55 10 35.8 | 19.1 | V | 587 |
| C/2021 Y1 | 2021 12 31.71523 | 01 21 58.59 | +55 10 33.7 | 19.1 | V | 587 |
| C/2021 Y1 | 2021 12 31.80364 | 01 21 58.63 | +55 09 31.1 | 18.4 | V | A77 |
| C/2021 Y1 | 2021 12 31.81228 | 01 21 58.63 | +55 09 24.3 | 19.3 | V | L01 |
| C/2021 Y1 | 2021 12 31.81306 | 01 21 58.61 | +55 09 24.0 | 19.2 | V | L01 |
| C/2021 Y1 | 2021 12 31.81616 | 01 21 58.66 | +55 09 21.5 | 19.1 | V | L01 |
| C/2021 Y1 | 2021 12 31.81695 | 01 21 58.61 | +55 09 21.3 | 19.2 | V | L01 |
| C/2021 Y1 | 2021 12 31.81928 | 01 21 58.65 | +55 09 19.3 | 19.2 | V | L01 |
| C/2021 Y1 | 2021 12 31.82037 | 01 21 58.62 | +55 09 18.6 | 18.4 | V | A77 |
| C/2021 Y1 | 2021 12 31.82921 | 01 21 58.71 | +55 09 12.7 | 204 | ||
| C/2021 Y1 | 2021 12 31.83714 | 01 21 58.66 | +55 09 06.8 | 18.5 | V | A77 |
| C/2021 Y1 | 2021 12 31.84049 | 01 21 58.70 | +55 09 04.5 | 204 | ||
| C/2021 Y1 | 2021 12 31.85178 | 01 21 58.69 | +55 08 56.5 | 18.8 | G | 204 |
| C/2021 Y1 | 2022 01 01.41277 | 01 21 59.96 | +55 02 14.9 | 17.5 | V | Q21 |