| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H3 | 1999 04 22.30901 | 19 17 19.76 | +44 09 48.1 | 16.8 | T | 704 |
| C/1999 H3 | 1999 04 22.32527 | 19 17 18.66 | +44 10 09.3 | 17.1 | T | 704 |
| C/1999 H3 | 1999 04 22.33342 | 19 17 18.04 | +44 10 20.0 | 17.0 | T | 704 |
| C/1999 H3 | 1999 04 22.34245 | 19 17 17.36 | +44 10 33.7 | 16.8 | T | 704 |
| C/1999 H3 | 1999 04 23.87372 | 19 15 28.48 | +44 44 32.2 | 15.5 | T | 046 |
| C/1999 H3 | 1999 04 23.87542 | 19 15 28.31 | +44 44 34.2 | 046 | ||
| C/1999 H3 | 1999 04 23.87583 | 19 15 28.26 | +44 44 33.8 | 557 | ||
| C/1999 H3 | 1999 04 23.87650 | 19 15 28.25 | +44 44 35.6 | 046 | ||
| C/1999 H3 | 1999 04 23.87781 | 19 15 28.13 | +44 44 36.5 | 557 | ||
| C/1999 H3 | 1999 04 23.89566 | 19 15 26.85 | +44 45 00.0 | 557 | ||
| C/1999 H3 | 1999 04 23.89766 | 19 15 26.68 | +44 45 03.2 | 557 | ||
| C/1999 H3 | 1999 04 24.04884 | 19 15 15.46 | +44 48 25.1 | 15.4 | N | 620 |
| C/1999 H3 | 1999 04 24.05706 | 19 15 14.85 | +44 48 36.2 | 15.4 | N | 620 |
| C/1999 H3 | 1999 04 24.08414 | 19 15 12.85 | +44 49 12.7 | 15.5 | N | 620 |
| C/1999 H3 | 1999 04 24.08981 | 19 15 12.43 | +44 49 20.4 | 620 | ||
| C/1999 H3 | 1999 04 24.10686 | 19 15 11.18 | +44 49 44.0 | 046 | ||
| C/1999 H3 | 1999 04 24.10882 | 19 15 11.04 | +44 49 46.8 | 046 | ||
| C/1999 H3 | 1999 04 24.10997 | 19 15 10.95 | +44 49 48.3 | 046 | ||
| C/1999 H3 | 1999 04 24.11125 | 19 15 10.84 | +44 49 50.2 | 046 | ||
| C/1999 H3 | 1999 04 24.11252 | 19 15 10.77 | +44 49 51.7 | 046 |