| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H3 | 1999 04 24.24407 | 19 15 01.07 | +44 52 48.5 | 14.9 | T | 859 |
| C/1999 H3 | 1999 04 24.24904 | 19 15 00.55 | +44 52 54.9 | 15.1 | T | 859 |
| C/1999 H3 | 1999 04 24.25477 | 19 15 00.32 | +44 53 02.2 | 14.9 | T | 859 |
| C/1999 H3 | 1999 04 24.25976 | 19 14 59.79 | +44 53 09.5 | 15.0 | T | 859 |
| C/1999 H3 | 1999 04 24.28389 | 19 14 57.96 | +44 53 42.9 | 14.8 | T | 860 |
| C/1999 H3 | 1999 04 24.29256 | 19 14 57.32 | +44 53 54.9 | 15.1 | T | 860 |
| C/1999 H3 | 1999 04 24.29605 | 19 14 57.11 | +44 53 59.7 | 15.2 | T | 860 |
| C/1999 H3 | 1999 04 24.29986 | 19 14 56.76 | +44 54 03.8 | 15.4 | T | 860 |
| C/1999 H3 | 1999 04 24.45257 | 19 14 45.44 | +44 57 24.8 | 658 | ||
| C/1999 H3 | 1999 04 24.46280 | 19 14 44.66 | +44 57 38.4 | 658 | ||
| C/1999 H3 | 1999 04 24.46519 | 19 14 44.47 | +44 57 41.7 | 658 | ||
| C/1999 H3 | 1999 04 24.77780 | 19 14 20.76 | +45 04 38.1 | 15.5 | T | 327 |
| C/1999 H3 | 1999 04 24.78245 | 19 14 20.59 | +45 04 42.6 | 15.2 | T | 327 |
| C/1999 H3 | 1999 04 24.90418 | 19 14 11.22 | +45 07 25.8 | 046 | ||
| C/1999 H3 | 1999 04 24.90600 | 19 14 11.13 | +45 07 27.7 | 046 | ||
| C/1999 H3 | 1999 04 24.90715 | 19 14 11.08 | +45 07 29.5 | 046 | ||
| C/1999 H3 | 1999 04 24.90836 | 19 14 10.95 | +45 07 30.9 | 046 | ||
| C/1999 H3 | 1999 04 24.90995 | 19 14 10.87 | +45 07 33.2 | 611 | ||
| C/1999 H3 | 1999 04 24.91401 | 19 14 10.52 | +45 07 38.5 | 611 | ||
| C/1999 H3 | 1999 04 24.91701 | 19 14 10.28 | +45 07 42.7 | 611 |
