| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H3 | 1999 07 16.00120 | 15 12 12.97 | +53 44 43.6 | 15.2 | T | 071 |
| C/1999 H3 | 1999 07 17.93296 | 15 07 57.16 | +53 15 33.3 | 14.7 | T | 138 |
| C/1999 H3 | 1999 07 17.94604 | 15 07 55.30 | +53 15 22.4 | 14.7 | T | 138 |
| C/1999 H3 | 1999 07 17.95983 | 15 07 53.34 | +53 15 19.8 | 14.7 | T | 138 |
| C/1999 H3 | 1999 07 20.14631 | 15 03 21.53 | +52 41 21.2 | 762 | ||
| C/1999 H3 | 1999 07 20.15764 | 15 03 19.92 | +52 41 11.8 | 17.6 | T | 762 |
| C/1999 H3 | 1999 07 20.16384 | 15 03 19.17 | +52 41 05.9 | 17.7 | T | 762 |
| C/1999 H3 | 1999 07 20.17377 | 15 03 17.98 | +52 40 56.5 | 18.4 | T | 762 |
| C/1999 H3 | 1999 07 21.55260 | 15 00 35.53 | +52 19 10.5 | 900 | ||
| C/1999 H3 | 1999 07 21.55811 | 15 00 35.00 | +52 19 05.8 | 900 | ||
| C/1999 H3 | 1999 07 22.56245 | 14 58 41.14 | +52 03 05.7 | 14.7 | T | 402 |
| C/1999 H3 | 1999 07 22.56370 | 14 58 41.02 | +52 03 04.0 | 402 | ||
| C/1999 H3 | 1999 07 22.56498 | 14 58 40.89 | +52 03 02.9 | 402 | ||
| C/1999 H3 | 1999 07 23.30408 | 14 57 19.40 | +51 51 10.8 | 15.9 | T | 848 |
| C/1999 H3 | 1999 07 23.31042 | 14 57 18.73 | +51 51 04.9 | 15.9 | T | 848 |
| C/1999 H3 | 1999 07 23.31527 | 14 57 18.23 | +51 50 59.9 | 15.8 | T | 848 |
| C/1999 H3 | 1999 07 24.59002 | 14 55 02.16 | +51 30 24.5 | 900 | ||
| C/1999 H3 | 1999 07 24.59935 | 14 55 01.22 | +51 30 15.0 | 14.7 | T | 900 |
| C/1999 H3 | 1999 07 27.87968 | 14 49 36.89 | +50 36 33.6 | 14.8 | T | 118 |
| C/1999 H3 | 1999 07 27.88563 | 14 49 36.40 | +50 36 26.9 | 118 |