| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H1 | 1999 09 30.92491 | 01 05 43.60 | +53 17 48.1 | 12.3 | T | 057 |
| C/1999 H1 | 1999 10 01.01722 | 01 04 37.54 | +53 11 28.5 | 945 | ||
| C/1999 H1 | 1999 10 01.01959 | 01 04 35.86 | +53 11 20.6 | 945 | ||
| C/1999 H1 | 1999 10 01.02005 | 01 04 35.61 | +53 11 17.4 | 945 | ||
| C/1999 H1 | 1999 10 01.02083 | 01 04 35.01 | +53 11 14.4 | 945 | ||
| C/1999 H1 | 1999 10 01.02373 | 01 04 33.13 | +53 11 02.9 | 945 | ||
| C/1999 H1 | 1999 10 01.02477 | 01 04 32.27 | +53 10 58.6 | 945 | ||
| C/1999 H1 | 1999 10 01.02661 | 01 04 30.97 | +53 10 50.7 | 945 | ||
| C/1999 H1 | 1999 10 01.23379 | 01 02 04.76 | +52 56 29.4 | 14.7 | T | 750 |
| C/1999 H1 | 1999 10 01.23769 | 01 02 02.02 | +52 56 13.6 | 14.6 | T | 750 |
| C/1999 H1 | 1999 10 01.24303 | 01 01 58.22 | +52 55 50.8 | 14.8 | T | 750 |
| C/1999 H1 | 1999 10 01.58142 | 00 58 03.22 | +52 31 58.3 | 867 | ||
| C/1999 H1 | 1999 10 01.58524 | 00 58 00.57 | +52 31 42.0 | 867 | ||
| C/1999 H1 | 1999 10 01.58628 | 00 57 59.85 | +52 31 37.5 | 867 | ||
| C/1999 H1 | 1999 10 02.00784 | 00 53 12.79 | +52 01 05.5 | 118 | ||
| C/1999 H1 | 1999 10 02.01339 | 00 53 09.02 | +52 00 40.7 | 118 | ||
| C/1999 H1 | 1999 10 02.08601 | 00 52 20.16 | +51 55 18.7 | 12.5 | T | 468 |
| C/1999 H1 | 1999 10 02.08779 | 00 52 18.93 | +51 55 10.3 | 12.1 | T | 468 |
| C/1999 H1 | 1999 10 02.08963 | 00 52 17.75 | +51 55 01.9 | 12.6 | T | 468 |
| C/1999 H1 | 1999 10 02.09141 | 00 52 16.58 | +51 54 55.2 | 12.4 | T | 468 |