| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2017 S3 | 2018 06 26.00641 | 02 38 00.60 | +59 22 24.7 | 15.8 | N | C23 |
| C/2017 S3 | 2018 06 26.04654 | 02 38 11.33 | +59 22 30.3 | 16.0 | R | B96 |
| C/2017 S3 | 2018 06 26.04733 | 02 38 11.53 | +59 22 30.0 | 13.5 | T | Z80 |
| C/2017 S3 | 2018 06 26.04877 | 02 38 11.90 | +59 22 29.7 | 16.1 | N | Z80 |
| C/2017 S3 | 2018 06 26.05022 | 02 38 12.41 | +59 22 30.2 | 15.8 | N | Z80 |
| C/2017 S3 | 2018 06 26.05144 | 02 38 12.68 | +59 22 30.6 | 16.0 | R | B96 |
| C/2017 S3 | 2018 06 26.05167 | 02 38 12.68 | +59 22 30.7 | 15.8 | N | Z80 |
| C/2017 S3 | 2018 06 26.05312 | 02 38 13.09 | +59 22 30.6 | 15.9 | N | Z80 |
| C/2017 S3 | 2018 06 26.05457 | 02 38 13.34 | +59 22 31.4 | 16.0 | N | Z80 |
| C/2017 S3 | 2018 06 26.05471 | 02 38 13.51 | +59 22 31.1 | 16.1 | R | B96 |
| C/2017 S3 | 2018 06 26.05602 | 02 38 13.81 | +59 22 30.8 | 15.8 | N | Z80 |
| C/2017 S3 | 2018 06 26.05747 | 02 38 14.23 | +59 22 31.0 | 15.8 | N | Z80 |
| C/2017 S3 | 2018 06 26.05892 | 02 38 14.65 | +59 22 30.6 | 16.0 | N | Z80 |
| C/2017 S3 | 2018 06 26.06037 | 02 38 14.99 | +59 22 31.1 | 16.1 | N | Z80 |
| C/2017 S3 | 2018 06 27.05184 | 02 42 44.11 | +59 23 59.1 | 16.5 | R | B96 |
| C/2017 S3 | 2018 06 27.06176 | 02 42 47.10 | +59 24 00.4 | 16.2 | R | B96 |
| C/2017 S3 | 2018 06 27.06666 | 02 42 48.48 | +59 24 00.9 | 16.2 | R | B96 |
| C/2017 S3 | 2018 06 27.90183 | 02 46 40.17 | +59 24 49.4 | 15.2 | N | B18 |
| C/2017 S3 | 2018 06 27.90321 | 02 46 40.57 | +59 24 49.4 | 15.4 | N | B18 |
| C/2017 S3 | 2018 06 27.90459 | 02 46 40.92 | +59 24 49.6 | 15.5 | N | B18 |