| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H1 | 1999 06 01.38992 | 08 33 42.44 | +04 18 33.9 | 12.8 | N | 428 |
| C/1999 H1 | 1999 06 01.45322 | 08 33 38.36 | +04 22 17.4 | 897 | ||
| C/1999 H1 | 1999 06 01.46197 | 08 33 37.82 | +04 22 49.9 | 897 | ||
| C/1999 H1 | 1999 06 03.35935 | 08 31 41.21 | +06 14 57.9 | 12.9 | N | 422 |
| C/1999 H1 | 1999 06 03.36116 | 08 31 41.10 | +06 15 04.2 | 12.7 | N | 422 |
| C/1999 H1 | 1999 06 03.36151 | 08 31 41.06 | +06 15 05.3 | 12.7 | N | 422 |
| C/1999 H1 | 1999 06 04.46596 | 08 30 36.47 | +07 16 39.5 | 402 | ||
| C/1999 H1 | 1999 06 04.46688 | 08 30 36.42 | +07 16 42.6 | 402 | ||
| C/1999 H1 | 1999 06 04.46779 | 08 30 36.37 | +07 16 45.6 | 402 | ||
| C/1999 H1 | 1999 06 06.37791 | 08 28 49.82 | +08 58 07.2 | 12.8 | N | 422 |
| C/1999 H1 | 1999 06 06.37853 | 08 28 49.79 | +08 58 09.0 | 12.8 | N | 422 |
| C/1999 H1 | 1999 06 09.46238 | 08 26 07.82 | +11 28 24.2 | 402 | ||
| C/1999 H1 | 1999 06 09.46329 | 08 26 07.78 | +11 28 26.7 | 402 | ||
| C/1999 H1 | 1999 06 09.46420 | 08 26 07.72 | +11 28 29.4 | 402 | ||
| C/1999 H1 | 1999 06 09.46956 | 08 26 07.42 | +11 28 44.7 | 360 | ||
| C/1999 H1 | 1999 06 09.47095 | 08 26 07.34 | +11 28 48.4 | 360 | ||
| C/1999 H1 | 1999 06 09.47234 | 08 26 07.29 | +11 28 52.6 | 360 | ||
| C/1999 H1 | 1999 06 09.47332 | 08 26 07.24 | +11 28 55.1 | 347 | ||
| C/1999 H1 | 1999 06 09.47647 | 08 26 07.08 | +11 29 03.2 | 347 | ||
| C/1999 H1 | 1999 06 09.47940 | 08 26 06.95 | +11 29 11.6 | 347 |