| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/2017 S3 | 2018 04 21.45331 | 23 31 38.00 | +53 32 45.4 | 17.2 | N | H06 |
| C/2017 S3 | 2018 04 21.45416 | 23 31 38.01 | +53 32 46.5 | 18.2 | N | H06 |
| C/2017 S3 | 2018 04 21.45498 | 23 31 38.15 | +53 32 45.7 | 16.9 | N | H06 |
| C/2017 S3 | 2018 04 21.45579 | 23 31 38.17 | +53 32 46.4 | 17.4 | N | H06 |
| C/2017 S3 | 2018 04 21.45662 | 23 31 38.23 | +53 32 48.1 | 17.5 | N | H06 |
| C/2017 S3 | 2018 04 22.77307 | 23 34 26.88 | +53 39 08.5 | 17.2 | T | Q11 |
| C/2017 S3 | 2018 04 22.77806 | 23 34 27.51 | +53 39 10.0 | Q11 | ||
| C/2017 S3 | 2018 04 22.78626 | 23 34 28.56 | +53 39 12.5 | Q11 | ||
| C/2017 S3 | 2018 05 01.09031 | 23 52 34.58 | +54 21 54.3 | 17.5 | N | I81 |
| C/2017 S3 | 2018 05 01.09392 | 23 52 35.05 | +54 21 56.2 | 17.6 | N | I81 |
| C/2017 S3 | 2018 05 01.09754 | 23 52 35.53 | +54 21 58.1 | 17.1 | N | I81 |
| C/2017 S3 | 2018 05 04.06948 | 23 59 15.43 | +54 38 12.2 | 17.6 | T | 461 |
| C/2017 S3 | 2018 05 04.07714 | 23 59 16.43 | +54 38 14.6 | 461 | ||
| C/2017 S3 | 2018 05 06.06197 | 00 03 47.15 | +54 49 20.6 | 17.5 | T | C10 |
| C/2017 S3 | 2018 05 06.08152 | 00 03 50.02 | +54 49 28.2 | 17.7 | T | C10 |
| C/2017 S3 | 2018 05 06.10113 | 00 03 52.56 | +54 49 35.0 | 17.7 | T | C10 |
| C/2017 S3 | 2018 05 09.04306 | 00 10 40.13 | +55 06 22.4 | 16.9 | N | I81 |
| C/2017 S3 | 2018 05 09.04668 | 00 10 40.64 | +55 06 23.7 | 17.2 | N | I81 |
| C/2017 S3 | 2018 05 09.05030 | 00 10 41.15 | +55 06 25.1 | 17.3 | N | I81 |
| C/2017 S3 | 2018 05 11.71834 | 00 16 57.76 | +55 21 59.7 | D81 |