| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2021 S4 | 2023 12 17.88610 | 04 41 54.43 | +41 42 56.9 | 16.7 | G | L59 |
| C/2021 S4 | 2023 12 17.90663 | 04 41 53.88 | +41 42 56.4 | 17.5 | G | L59 |
| C/2021 S4 | 2023 12 17.91682 | 04 41 53.65 | +41 42 56.0 | 17.6 | G | C23 |
| C/2021 S4 | 2023 12 17.92259 | 04 41 53.50 | +41 42 55.7 | 17.5 | G | C23 |
| C/2021 S4 | 2023 12 17.92692 | 04 41 53.40 | +41 42 55.7 | 17.6 | G | C23 |
| C/2021 S4 | 2023 12 17.92775 | 04 41 53.29 | +41 42 55.4 | 17.5 | G | L59 |
| C/2021 S4 | 2023 12 19.05964 | 04 41 25.24 | +41 42 04.0 | 16.8 | G | I81 |
| C/2021 S4 | 2023 12 19.06252 | 04 41 25.16 | +41 42 04.0 | 16.8 | G | I81 |
| C/2021 S4 | 2023 12 19.06541 | 04 41 25.05 | +41 42 03.6 | 16.9 | G | I81 |
| C/2021 S4 | 2023 12 19.79684 | 04 41 07.27 | +41 41 28.7 | 17.7 | V | A77 |
| C/2021 S4 | 2023 12 19.81063 | 04 41 06.86 | +41 41 28.1 | 17.7 | V | A77 |
| C/2021 S4 | 2023 12 19.82400 | 04 41 06.45 | +41 41 27.3 | 17.6 | V | A77 |
| C/2021 S4 | 2023 12 21.59237 | 04 40 23.73 | +41 39 54.6 | 18.9 | T | 900 |
| C/2021 S4 | 2023 12 21.59938 | 04 40 23.57 | +41 39 54.0 | 18.7 | T | 900 |
| C/2021 S4 | 2023 12 22.46125 | 04 40 03.04 | +41 39 04.6 | 17.1 | T | U69 |
| C/2021 S4 | 2023 12 22.46597 | 04 40 02.92 | +41 39 03.7 | 17.5 | N | U69 |
| C/2021 S4 | 2023 12 22.46759 | 04 40 02.89 | +41 39 03.5 | U69 | ||
| C/2021 S4 | 2024 01 01.41002 | 04 36 28.95 | +41 26 57.8 | 17.2 | o | T05 |
| C/2021 S4 | 2024 01 01.41319 | 04 36 28.84 | +41 26 57.8 | 17.1 | o | T05 |
| C/2021 S4 | 2024 01 01.43030 | 04 36 28.56 | +41 26 56.4 | 17.0 | o | T05 |