| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 N4 | 1999 08 02.93949 | 18 48 17.30 | +00 31 39.9 | 18.3 | N | 621 |
| C/1999 N4 | 1999 08 03.84875 | 18 47 16.93 | +00 29 30.8 | 118 | ||
| C/1999 N4 | 1999 08 03.85391 | 18 47 16.60 | +00 29 28.8 | 118 | ||
| C/1999 N4 | 1999 08 04.89693 | 18 46 07.77 | +00 26 54.0 | 118 | ||
| C/1999 N4 | 1999 08 04.90027 | 18 46 07.56 | +00 26 53.0 | 17.3 | T | 118 |
| C/1999 N4 | 1999 08 04.93382 | 18 46 05.42 | +00 26 50.7 | 621 | ||
| C/1999 N4 | 1999 08 04.93750 | 18 46 05.17 | +00 26 48.8 | 621 | ||
| C/1999 N4 | 1999 08 04.94119 | 18 46 04.90 | +00 26 48.9 | 18.5 | N | 621 |
| C/1999 N4 | 1999 08 06.84561 | 18 44 01.11 | +00 21 59.6 | 17.8 | T | 118 |
| C/1999 N4 | 1999 08 06.84990 | 18 44 00.76 | +00 21 58.6 | 118 | ||
| C/1999 N4 | 1999 08 08.59347 | 18 42 09.30 | +00 17 25.6 | 372 | ||
| C/1999 N4 | 1999 08 10.58375 | 18 40 04.15 | +00 12 01.1 | 897 | ||
| C/1999 N4 | 1999 08 10.59205 | 18 40 03.65 | +00 11 58.9 | 18.1 | T | 897 |
| C/1999 N4 | 1999 08 10.60468 | 18 40 02.80 | +00 11 56.6 | 897 | ||
| C/1999 N4 | 1999 08 13.61788 | 18 36 58.95 | +00 03 27.8 | 17.0 | T | 372 |
| C/1999 N4 | 1999 08 29.60011 | 18 22 40.24 | -00 46 29.8 | 18.5 | T | 402 |
| C/1999 N4 | 1999 08 29.60334 | 18 22 40.23 | -00 46 29.4 | 402 | ||
| C/1999 N4 | 1999 08 29.60656 | 18 22 40.14 | -00 46 29.8 | 402 | ||
| C/1999 N4 | 1999 09 10.80341 | 18 14 12.65 | -01 27 13.6 | 17.7 | T | 561 |
| C/1999 N4 | 1999 09 10.80778 | 18 14 12.49 | -01 27 14.3 | 17.6 | T | 561 |