| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H3 | 1999 05 19.14567 | 18 26 08.14 | +53 32 24.9 | 17.8 | T | 750 |
| C/1999 H3 | 1999 05 19.16809 | 18 26 04.37 | +53 32 49.1 | 18.4 | T | 750 |
| C/1999 H3 | 1999 05 19.17429 | 18 26 03.40 | +53 32 55.5 | 17.7 | T | 750 |
| C/1999 H3 | 1999 05 20.30814 | 18 22 51.88 | +53 52 46.9 | 17.0 | T | 704 |
| C/1999 H3 | 1999 05 20.31823 | 18 22 49.91 | +53 52 59.1 | 17.2 | T | 704 |
| C/1999 H3 | 1999 05 20.32832 | 18 22 48.19 | +53 53 09.3 | 17.3 | T | 704 |
| C/1999 H3 | 1999 05 20.33843 | 18 22 46.41 | +53 53 20.6 | 704 | ||
| C/1999 H3 | 1999 05 20.34917 | 18 22 44.35 | +53 53 30.5 | 704 | ||
| C/1999 H3 | 1999 05 20.51615 | 18 22 16.06 | +53 56 23.4 | 14.8 | T | 402 |
| C/1999 H3 | 1999 05 20.51776 | 18 22 15.84 | +53 56 26.3 | 402 | ||
| C/1999 H3 | 1999 05 20.62291 | 18 21 57.65 | +53 58 13.8 | 14.8 | T | 355 |
| C/1999 H3 | 1999 05 20.62917 | 18 21 56.53 | +53 58 20.2 | 355 | ||
| C/1999 H3 | 1999 05 20.63377 | 18 21 55.75 | +53 58 25.1 | 355 | ||
| C/1999 H3 | 1999 05 20.67293 | 18 21 48.85 | +53 59 04.7 | 15.1 | T | 903 |
| C/1999 H3 | 1999 05 20.68035 | 18 21 47.58 | +53 59 12.9 | 903 | ||
| C/1999 H3 | 1999 05 20.71222 | 18 21 42.05 | +53 59 46.4 | 14.8 | T | 897 |
| C/1999 H3 | 1999 05 20.71675 | 18 21 41.25 | +53 59 50.4 | 897 | ||
| C/1999 H3 | 1999 05 20.71892 | 18 21 40.95 | +53 59 53.3 | 14.5 | T | 360 |
| C/1999 H3 | 1999 05 20.72135 | 18 21 40.52 | +53 59 55.7 | 360 | ||
| C/1999 H3 | 1999 05 21.59160 | 18 19 08.52 | +54 14 38.3 | 903 |
