| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2021 S4 | 2021 10 10.93783 | 01 16 41.01 | +14 32 31.3 | 20.2 | T | 215 |
| C/2021 S4 | 2021 10 10.94041 | 01 16 40.93 | +14 32 31.3 | 20.1 | T | 215 |
| C/2021 S4 | 2021 10 13.09417 | 01 15 59.04 | +14 30 50.2 | 22.0 | T | X03 |
| C/2021 S4 | 2021 10 13.10021 | 01 15 58.92 | +14 30 50.1 | 22.5 | T | X03 |
| C/2021 S4 | 2021 10 13.10085 | 01 15 58.91 | +14 30 50.1 | 22.5 | T | X03 |
| C/2021 S4 | 2021 10 31.29529 | 01 10 11.33 | +14 13 53.9 | 20.7 | w | F52 |
| C/2021 S4 | 2021 10 31.30824 | 01 10 11.07 | +14 13 53.0 | 20.7 | w | F52 |
| C/2021 S4 | 2021 10 31.32121 | 01 10 10.84 | +14 13 52.3 | 20.7 | w | F52 |
| C/2021 S4 | 2021 10 31.33417 | 01 10 10.59 | +14 13 51.7 | 20.7 | w | F52 |
| C/2021 S4 | 2021 11 07.24294 | 01 08 10.30 | +14 07 04.5 | H06 | ||
| C/2021 S4 | 2021 11 07.24989 | 01 08 10.22 | +14 07 04.5 | 20.1 | T | H06 |
| C/2021 S4 | 2021 11 07.25476 | 01 08 10.18 | +14 07 04.1 | 20.7 | w | F52 |
| C/2021 S4 | 2021 11 07.26493 | 01 08 10.01 | +14 07 03.5 | 20.8 | w | F52 |
| C/2021 S4 | 2021 11 07.27520 | 01 08 09.84 | +14 07 03.0 | 20.8 | w | F52 |
| C/2021 S4 | 2021 11 07.28537 | 01 08 09.66 | +14 07 02.3 | 20.8 | w | F52 |
| C/2021 S4 | 2021 11 09.07462 | 01 07 40.49 | +14 05 19.7 | 19.8 | T | W62 |
| C/2021 S4 | 2021 11 09.08516 | 01 07 40.30 | +14 05 18.7 | 20.6 | T | W62 |
| C/2021 S4 | 2021 11 09.09563 | 01 07 40.05 | +14 05 18.5 | 19.7 | T | W62 |
| C/2021 S4 | 2021 11 28.88913 | 01 03 24.81 | +13 49 56.4 | 20.2 | R | J43 |
| C/2021 S4 | 2021 11 28.89914 | 01 03 24.70 | +13 49 56.0 | 20.4 | R | J43 |