| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1999 U4 | 2001 02 18.84007 | 02 26 04.28 | +51 36 37.0 | 201 | ||
| C/1999 U4 | 2001 03 15.45925 | 02 45 13.52 | +52 17 18.2 | 16.2 | T | 360 |
| C/1999 U4 | 2001 03 15.46145 | 02 45 13.64 | +52 17 18.7 | 360 | ||
| C/1999 U4 | 2001 04 18.49826 | 03 24 51.80 | +54 18 59.9 | 16.0 | T | 367 |
| C/1999 U4 | 2001 04 18.50139 | 03 24 51.94 | +54 19 01.7 | 367 | ||
| C/1999 U4 | 2001 04 18.50451 | 03 24 52.24 | +54 19 02.2 | 367 | ||
| C/1999 U4 | 2001 08 22.64895 | 07 32 08.64 | +64 53 00.7 | 349 | ||
| C/1999 U4 | 2001 08 22.65166 | 07 32 08.95 | +64 53 00.5 | 16.1 | T | 349 |
| C/1999 U4 | 2001 09 22.64140 | 08 47 04.86 | +66 53 15.4 | 349 | ||
| C/1999 U4 | 2001 09 22.64400 | 08 47 05.06 | +66 53 16.3 | 16.6 | T | 349 |
| C/1999 U4 | 2001 09 23.78426 | 08 49 48.84 | +66 57 34.3 | 16.3 | T | 903 |
| C/1999 U4 | 2001 09 23.79196 | 08 49 50.02 | +66 57 34.9 | 903 | ||
| C/1999 U4 | 2001 09 23.79729 | 08 49 50.35 | +66 57 38.4 | 903 | ||
| C/1999 U4 | 2001 09 24.76171 | 08 52 08.80 | +67 01 14.3 | 349 | ||
| C/1999 U4 | 2001 09 24.76848 | 08 52 09.88 | +67 01 15.0 | 349 | ||
| C/1999 U4 | 2001 09 24.77156 | 08 52 10.33 | +67 01 15.4 | 16.3 | T | 349 |
| C/1999 U4 | 2001 10 12.82190 | 09 34 19.24 | +68 09 57.7 | 349 | ||
| C/1999 U4 | 2001 10 12.82443 | 09 34 19.49 | +68 09 59.6 | 349 | ||
| C/1999 U4 | 2001 10 12.82696 | 09 34 19.78 | +68 09 59.2 | 16.3 | T | 349 |
| C/1999 U4 | 2001 10 12.95354 | 09 34 38.06 | +68 10 30.3 | 16.3 | N | 235 |