| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2017 S3 | 2018 05 21.05557 | 00 39 56.99 | +56 18 20.5 | 17.3 | N | A71 |
| C/2017 S3 | 2018 05 21.05736 | 00 39 57.25 | +56 18 21.3 | 17.3 | N | A71 |
| C/2017 S3 | 2018 05 21.05936 | 00 39 57.52 | +56 18 22.1 | 17.4 | N | A71 |
| C/2017 S3 | 2018 05 21.06125 | 00 39 57.88 | +56 18 22.5 | 17.4 | N | A71 |
| C/2017 S3 | 2018 05 26.77295 | 00 54 59.57 | +56 53 32.2 | 367 | ||
| C/2017 S3 | 2018 05 26.77538 | 00 54 59.99 | +56 53 33.3 | 367 | ||
| C/2017 S3 | 2018 05 26.77821 | 00 55 00.47 | +56 53 34.5 | 16.3 | T | 367 |
| C/2017 S3 | 2018 05 29.20290 | 01 01 40.01 | +57 08 26.6 | 17.1 | N | G40 |
| C/2017 S3 | 2018 05 29.20846 | 01 01 40.96 | +57 08 28.4 | G40 | ||
| C/2017 S3 | 2018 05 29.21420 | 01 01 41.96 | +57 08 30.5 | 17.0 | N | G40 |
| C/2017 S3 | 2018 05 31.16063 | 01 07 10.96 | +57 20 21.3 | 16.7 | N | G40 |
| C/2017 S3 | 2018 05 31.16351 | 01 07 11.39 | +57 20 22.7 | 16.4 | N | G40 |
| C/2017 S3 | 2018 06 03.46049 | 01 16 47.02 | +57 40 12.3 | 16.6 | N | U69 |
| C/2017 S3 | 2018 06 03.46248 | 01 16 47.45 | +57 40 13.3 | 16.3 | N | U69 |
| C/2017 S3 | 2018 06 03.46425 | 01 16 47.82 | +57 40 13.8 | 16.5 | N | U69 |
| C/2017 S3 | 2018 06 05.97336 | 01 24 23.01 | +57 54 56.7 | 16.8 | R | B96 |
| C/2017 S3 | 2018 06 05.97662 | 01 24 23.73 | +57 54 57.2 | 16.9 | R | B96 |
| C/2017 S3 | 2018 06 05.97990 | 01 24 24.50 | +57 54 58.7 | 16.7 | R | B96 |
| C/2017 S3 | 2018 06 06.05363 | 01 24 38.07 | +57 55 24.9 | 16.4 | N | C23 |
| C/2017 S3 | 2018 06 06.05816 | 01 24 38.78 | +57 55 27.1 | 16.6 | N | C23 |