| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2021 S3 | 2025 03 19.15549 | 22 47 39.81 | +33 24 33.2 | 19.0 | r | M09 |
| C/2021 S3 | 2025 03 22.81573 | 22 51 10.05 | +33 41 42.0 | 349 | ||
| C/2021 S3 | 2025 03 22.82229 | 22 51 10.40 | +33 41 43.6 | 16.7 | T | 349 |
| C/2021 S3 | 2025 03 28.12196 | 22 56 06.29 | +34 07 42.7 | 17.8 | r | M09 |
| C/2021 S3 | 2025 03 28.12903 | 22 56 06.39 | +34 07 44.8 | 18.3 | r | M09 |
| C/2021 S3 | 2025 03 28.13611 | 22 56 07.02 | +34 07 48.0 | 18.0 | r | M09 |
| C/2021 S3 | 2025 04 02.09737 | 23 00 34.49 | +34 33 15.1 | 17.5 | r | M09 |
| C/2021 S3 | 2025 04 02.10444 | 23 00 34.93 | +34 33 17.3 | 17.9 | r | M09 |
| C/2021 S3 | 2025 04 02.11152 | 23 00 35.23 | +34 33 18.5 | 18.0 | r | M09 |
| C/2021 S3 | 2025 04 03.12532 | 23 01 28.66 | +34 38 40.1 | 18.5 | r | M09 |
| C/2021 S3 | 2025 04 03.13236 | 23 01 29.15 | +34 38 42.6 | 18.3 | r | M09 |
| C/2021 S3 | 2025 04 03.13940 | 23 01 29.46 | +34 38 42.0 | 18.0 | r | M09 |
| C/2021 S3 | 2025 04 06.11516 | 23 04 03.59 | +34 54 31.8 | 18.1 | r | M09 |
| C/2021 S3 | 2025 04 06.12133 | 23 04 04.20 | +34 54 35.1 | 18.0 | r | M09 |
| C/2021 S3 | 2025 04 06.12661 | 23 04 04.56 | +34 54 40.6 | 17.7 | r | M09 |
| C/2021 S3 | 2025 04 08.80027 | 23 06 20.01 | +35 09 06.0 | 903 | ||
| C/2021 S3 | 2025 04 08.80710 | 23 06 20.40 | +35 09 09.6 | 17.2 | T | 903 |
| C/2021 S3 | 2025 04 27.03596 | 23 20 20.71 | +36 53 10.6 | 17.8 | r | M09 |
| C/2021 S3 | 2025 04 27.04301 | 23 20 20.83 | +36 53 12.5 | 18.1 | r | M09 |
| C/2021 S3 | 2025 04 27.05005 | 23 20 21.16 | +36 53 15.0 | 18.3 | r | M09 |