| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2017 S3 | 2018 06 27.97692 | 02 47 01.34 | +59 24 54.2 | 15.4 | N | B18 |
| C/2017 S3 | 2018 06 27.97831 | 02 47 01.72 | +59 24 54.3 | 15.5 | N | B18 |
| C/2017 S3 | 2018 06 27.98072 | 02 47 02.37 | +59 24 54.5 | 15.5 | N | B18 |
| C/2017 S3 | 2018 06 28.02204 | 02 47 13.83 | +59 24 53.4 | 16.5 | R | B96 |
| C/2017 S3 | 2018 06 28.02705 | 02 47 15.51 | +59 24 54.9 | 16.3 | R | B96 |
| C/2017 S3 | 2018 06 28.03194 | 02 47 16.76 | +59 24 56.1 | 16.1 | R | B96 |
| C/2017 S3 | 2018 06 29.00838 | 02 51 54.57 | +59 25 22.2 | 16.3 | R | B96 |
| C/2017 S3 | 2018 06 29.01502 | 02 51 56.45 | +59 25 22.3 | 16.3 | R | B96 |
| C/2017 S3 | 2018 06 29.02321 | 02 51 58.83 | +59 25 22.5 | 16.2 | R | B96 |
| C/2017 S3 | 2018 06 30.01289 | 02 56 47.45 | +59 25 15.3 | 16.2 | R | B96 |
| C/2017 S3 | 2018 06 30.02106 | 02 56 49.88 | +59 25 14.6 | 16.2 | R | B96 |
| C/2017 S3 | 2018 06 30.06461 | 02 57 02.86 | +59 25 16.1 | 15.8 | N | C23 |
| C/2017 S3 | 2018 06 30.06536 | 02 57 03.06 | +59 25 15.6 | 15.5 | N | C23 |
| C/2017 S3 | 2018 06 30.06611 | 02 57 03.30 | +59 25 14.7 | 15.6 | N | C23 |
| C/2017 S3 | 2018 06 30.06686 | 02 57 03.63 | +59 25 15.7 | 16.6 | N | C23 |
| C/2017 S3 | 2018 06 30.99319 | 03 01 40.68 | +59 24 32.2 | 15.9 | N | A71 |
| C/2017 S3 | 2018 06 30.99720 | 03 01 41.91 | +59 24 32.2 | 15.8 | N | A71 |
| C/2017 S3 | 2018 07 01.00146 | 03 01 43.12 | +59 24 31.9 | 15.8 | N | A71 |
| C/2017 S3 | 2018 07 01.00570 | 03 01 44.50 | +59 24 31.8 | 15.9 | N | A71 |
| C/2017 S3 | 2018 07 01.00588 | 03 01 44.48 | +59 24 31.3 | 15.0 | N | C10 |