| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 H3 | 1999 05 29.68701 | 17 53 13.49 | +56 13 10.9 | 903 | ||
| C/1999 H3 | 1999 05 30.19289 | 17 51 28.60 | +56 19 21.4 | 16.5 | T | 750 |
| C/1999 H3 | 1999 05 30.20920 | 17 51 25.24 | +56 19 32.8 | 16.7 | T | 750 |
| C/1999 H3 | 1999 05 30.22228 | 17 51 22.33 | +56 19 41.2 | 16.9 | T | 750 |
| C/1999 H3 | 1999 05 31.72679 | 17 46 05.19 | +56 37 06.5 | 14.8 | T | 402 |
| C/1999 H3 | 1999 05 31.72841 | 17 46 04.87 | +56 37 07.8 | 402 | ||
| C/1999 H3 | 1999 05 31.73001 | 17 46 04.50 | +56 37 08.7 | 402 | ||
| C/1999 H3 | 1999 06 03.39073 | 17 36 27.62 | +57 04 18.3 | 17.0 | T | 704 |
| C/1999 H3 | 1999 06 03.39815 | 17 36 25.70 | +57 04 20.8 | 17.3 | T | 704 |
| C/1999 H3 | 1999 06 04.56336 | 17 32 07.84 | +57 14 43.0 | 352 | ||
| C/1999 H3 | 1999 06 04.56752 | 17 32 06.84 | +57 14 46.0 | 352 | ||
| C/1999 H3 | 1999 06 04.57169 | 17 32 06.07 | +57 14 48.9 | 352 | ||
| C/1999 H3 | 1999 06 04.58042 | 17 32 04.13 | +57 14 53.4 | 14.0 | T | 886 |
| C/1999 H3 | 1999 06 04.58703 | 17 32 02.55 | +57 14 56.3 | 355 | ||
| C/1999 H3 | 1999 06 04.59009 | 17 32 01.84 | +57 14 58.4 | 14.5 | T | 355 |
| C/1999 H3 | 1999 06 04.59324 | 17 32 01.13 | +57 14 59.9 | 355 | ||
| C/1999 H3 | 1999 06 04.59364 | 17 32 01.06 | +57 14 59.6 | 886 | ||
| C/1999 H3 | 1999 06 08.22664 | 17 18 17.65 | +57 41 10.7 | 16.7 | T | 750 |
| C/1999 H3 | 1999 06 08.22803 | 17 18 17.31 | +57 41 11.6 | 16.6 | T | 750 |
| C/1999 H3 | 1999 06 08.22941 | 17 18 17.03 | +57 41 11.5 | 16.9 | T | 750 |