| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1989 X1 | 1990 03 16.39605 | 01 33 34.84 | -04 16 32.3 | 413 | ||
| C/1989 X1 | 1990 03 17.39172 | 01 34 52.93 | -03 15 16.2 | 413 | ||
| C/1989 X1 | 1990 03 17.39397 | 01 34 53.21 | -03 15 11.0 | 413 | ||
| C/1989 X1 | 1990 03 19.41675 | 01 37 28.98 | -01 06 57.6 | 6.0 | T | 372 |
| C/1989 X1 | 1990 04 06.42899 | 01 47 28.19 | +21 52 56.8 | 4.5 | T | 372 |
| C/1989 X1 | 1990 04 17.94516 | 01 13 34.67 | +33 45 45.3 | 168 | ||
| C/1989 X1 | 1990 04 18.94494 | 01 09 07.92 | +34 17 52.2 | 168 | ||
| C/1989 X1 | 1990 04 18.94958 | 01 09 06.65 | +34 18 01.9 | 168 | ||
| C/1989 X1 | 1990 04 18.95403 | 01 09 05.63 | +34 18 05.7 | 168 | ||
| C/1989 X1 | 1990 04 18.95762 | 01 09 04.21 | +34 18 20.1 | 168 | ||
| C/1989 X1 | 1990 04 19.92664 | 01 04 39.05 | +34 45 05.9 | 168 | ||
| C/1989 X1 | 1990 04 19.93854 | 01 04 35.93 | +34 45 25.9 | 168 | ||
| C/1989 X1 | 1990 04 19.94526 | 01 04 34.19 | +34 45 33.4 | 168 | ||
| C/1989 X1 | 1990 04 19.94948 | 01 04 32.87 | +34 45 42.7 | 168 | ||
| C/1989 X1 | 1990 04 19.95504 | 01 04 31.47 | +34 45 47.2 | 168 | ||
| C/1989 X1 | 1990 04 20.92014 | 01 00 00.95 | +35 08 38.2 | 168 | ||
| C/1989 X1 | 1990 04 20.92986 | 00 59 58.15 | +35 08 46.1 | 168 | ||
| C/1989 X1 | 1990 04 20.93831 | 00 59 55.88 | +35 08 55.8 | 168 | ||
| C/1989 X1 | 1990 04 20.93906 | 00 59 55.74 | +35 08 56.2 | 168 | ||
| C/1989 X1 | 1990 04 20.94062 | 00 59 55.23 | +35 08 59.5 | 168 |