| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 S4 | 1999 12 15.85717 | 02 46 45.75 | +34 53 14.4 | 958 | ||
| C/1999 S4 | 1999 12 16.44435 | 02 45 27.22 | +34 48 16.9 | 15.1 | T | 402 |
| C/1999 S4 | 1999 12 16.44561 | 02 45 27.07 | +34 48 16.1 | 402 | ||
| C/1999 S4 | 1999 12 16.44689 | 02 45 26.91 | +34 48 15.5 | 402 | ||
| C/1999 S4 | 1999 12 17.10818 | 02 43 59.26 | +34 42 34.8 | 15.6 | T | 294 |
| C/1999 S4 | 1999 12 17.14068 | 02 43 54.93 | +34 42 18.0 | 15.8 | T | 294 |
| C/1999 S4 | 1999 12 19.61760 | 02 38 33.01 | +34 20 22.6 | 349 | ||
| C/1999 S4 | 1999 12 19.64462 | 02 38 29.58 | +34 20 08.1 | 14.6 | T | 349 |
| C/1999 S4 | 1999 12 20.43873 | 02 36 48.90 | +34 12 56.0 | 14.6 | T | 897 |
| C/1999 S4 | 1999 12 20.45910 | 02 36 46.42 | +34 12 44.8 | 897 | ||
| C/1999 S4 | 1999 12 20.46722 | 02 36 45.42 | +34 12 39.5 | 897 | ||
| C/1999 S4 | 1999 12 20.78101 | 02 36 05.95 | +34 09 47.0 | 13.5 | T | 504 |
| C/1999 S4 | 1999 12 20.78248 | 02 36 05.75 | +34 09 46.2 | 13.9 | T | 504 |
| C/1999 S4 | 1999 12 20.78390 | 02 36 05.60 | +34 09 45.2 | 14.1 | T | 504 |
| C/1999 S4 | 1999 12 20.78869 | 02 36 04.90 | +34 09 42.4 | 14.6 | T | 504 |
| C/1999 S4 | 1999 12 20.79091 | 02 36 04.70 | +34 09 41.6 | 14.1 | T | 504 |
| C/1999 S4 | 1999 12 20.79321 | 02 36 04.40 | +34 09 40.6 | 14.0 | T | 504 |
| C/1999 S4 | 1999 12 21.53771 | 02 34 31.23 | +34 02 47.0 | 355 | ||
| C/1999 S4 | 1999 12 21.53947 | 02 34 30.98 | +34 02 46.1 | 355 | ||
| C/1999 S4 | 1999 12 21.54313 | 02 34 30.54 | +34 02 44.8 | 355 |