| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2017 S3 | 2018 07 18.07786 | 04 50 50.69 | +56 02 30.9 | 12.7 | N | A77 |
| C/2017 S3 | 2018 07 18.08389 | 04 50 53.58 | +56 02 20.7 | 13.6 | N | L05 |
| C/2017 S3 | 2018 07 18.09426 | 04 50 58.50 | +56 02 02.7 | 13.5 | N | L05 |
| C/2017 S3 | 2018 07 18.12703 | 04 51 14.10 | +56 01 02.3 | 11.5 | N | J01 |
| C/2017 S3 | 2018 07 18.13187 | 04 51 16.46 | +56 00 53.8 | 11.5 | N | J01 |
| C/2017 S3 | 2018 07 18.14155 | 04 51 20.96 | +56 00 36.9 | 11.5 | N | J01 |
| C/2017 S3 | 2018 07 18.20407 | 04 51 51.01 | +55 58 44.2 | 12.0 | N | G40 |
| C/2017 S3 | 2018 07 18.21806 | 04 51 57.71 | +55 58 19.2 | 12.1 | N | G40 |
| C/2017 S3 | 2018 07 18.71050 | 04 55 54.34 | +55 42 46.0 | 8.6 | T | 349 |
| C/2017 S3 | 2018 07 18.71446 | 04 55 56.24 | +55 42 38.5 | 349 | ||
| C/2017 S3 | 2018 07 18.71839 | 04 55 58.15 | +55 42 31.0 | 349 | ||
| C/2017 S3 | 2018 07 18.76987 | 04 56 22.93 | +55 40 47.2 | 12.9 | G | D35 |
| C/2017 S3 | 2018 07 18.77085 | 04 56 23.38 | +55 40 45.4 | 12.9 | G | D35 |
| C/2017 S3 | 2018 07 18.77181 | 04 56 23.86 | +55 40 43.6 | 13.0 | G | D35 |
| C/2017 S3 | 2018 07 18.82769 | 04 56 51.07 | +55 38 55.2 | 12.9 | G | D35 |
| C/2017 S3 | 2018 07 18.82861 | 04 56 51.53 | +55 38 53.3 | 12.9 | G | D35 |
| C/2017 S3 | 2018 07 18.82953 | 04 56 51.99 | +55 38 51.5 | 12.9 | G | D35 |
| C/2017 S3 | 2018 07 18.89553 | 04 57 23.34 | +55 36 39.7 | 12.2 | N | C10 |
| C/2017 S3 | 2018 07 18.91588 | 04 57 33.36 | +55 35 59.6 | 12.2 | N | C10 |
| C/2017 S3 | 2018 07 18.94015 | 04 57 45.10 | +55 35 12.6 | 10.0 | N | C10 |