| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H3 | 1999 07 07.14183 | 15 34 58.50 | +55 45 29.2 | 17.5 | T | 762 |
| C/1999 H3 | 1999 07 07.15172 | 15 34 57.11 | +55 45 20.7 | 762 | ||
| C/1999 H3 | 1999 07 07.53259 | 15 33 51.70 | +55 40 41.8 | 14.7 | T | 402 |
| C/1999 H3 | 1999 07 07.53385 | 15 33 51.48 | +55 40 40.7 | 402 | ||
| C/1999 H3 | 1999 07 07.53512 | 15 33 51.24 | +55 40 40.2 | 402 | ||
| C/1999 H3 | 1999 07 08.11146 | 15 32 13.77 | +55 33 31.7 | 16.7 | T | 762 |
| C/1999 H3 | 1999 07 08.11998 | 15 32 12.18 | +55 33 24.7 | 16.7 | T | 762 |
| C/1999 H3 | 1999 07 08.13495 | 15 32 09.74 | +55 33 14.8 | 16.9 | T | 762 |
| C/1999 H3 | 1999 07 08.62154 | 15 30 48.28 | +55 27 03.2 | 349 | ||
| C/1999 H3 | 1999 07 08.62267 | 15 30 48.25 | +55 27 04.7 | 14.4 | T | 349 |
| C/1999 H3 | 1999 07 09.50363 | 15 28 23.43 | +55 15 48.0 | 15.1 | T | 351 |
| C/1999 H3 | 1999 07 09.50831 | 15 28 22.99 | +55 15 42.5 | 351 | ||
| C/1999 H3 | 1999 07 10.54469 | 15 25 36.38 | +55 02 03.0 | 903 | ||
| C/1999 H3 | 1999 07 10.59748 | 15 25 27.93 | +55 01 19.3 | 15.5 | T | 903 |
| C/1999 H3 | 1999 07 14.57951 | 15 15 30.81 | +54 05 39.3 | 14.8 | T | 360 |
| C/1999 H3 | 1999 07 14.58212 | 15 15 30.45 | +54 05 37.1 | 360 | ||
| C/1999 H3 | 1999 07 15.99089 | 15 12 14.39 | +53 44 52.8 | 15.3 | T | 071 |
| C/1999 H3 | 1999 07 15.99604 | 15 12 13.72 | +53 44 47.6 | 15.1 | T | 071 |
| C/1999 H3 | 1999 07 15.99884 | 15 12 13.34 | +53 44 45.2 | 15.2 | T | 071 |
| C/1999 H3 | 1999 07 16.00002 | 15 12 13.18 | +53 44 44.5 | 15.2 | T | 071 |