| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1989 X1 | 1990 04 29.78151 | 00 15 00.14 | +36 08 59.2 | 385 | ||
| C/1989 X1 | 1990 04 30.47170 | 00 11 09.40 | +36 04 06.3 | 657 | ||
| C/1989 X1 | 1990 04 30.78472 | 00 09 23.58 | +36 01 31.1 | 897 | ||
| C/1989 X1 | 1990 04 30.80278 | 00 09 17.65 | +36 01 21.7 | 372 | ||
| C/1989 X1 | 1990 05 01.10420 | 00 07 34.45 | +35 58 28.8 | 503 | ||
| C/1989 X1 | 1990 05 01.15625 | 00 07 17.02 | +35 58 05.2 | 006 | ||
| C/1989 X1 | 1990 05 01.16146 | 00 07 15.28 | +35 58 02.3 | 006 | ||
| C/1989 X1 | 1990 05 02.12396 | 00 01 40.11 | +35 47 13.1 | 006 | ||
| C/1989 X1 | 1990 05 02.12951 | 00 01 38.16 | +35 47 09.2 | 006 | ||
| C/1989 X1 | 1990 05 03.09537 | 23 55 51.84 | +35 33 36.0 | 046 | ||
| C/1989 X1 | 1990 05 03.09641 | 23 55 51.46 | +35 33 34.4 | 046 | ||
| C/1989 X1 | 1990 05 04.09074 | 23 49 43.02 | +35 16 49.3 | 046 | ||
| C/1989 X1 | 1990 05 04.09144 | 23 49 42.69 | +35 16 47.9 | 046 | ||
| C/1989 X1 | 1990 05 05.04454 | 23 43 36.71 | +34 57 48.0 | 061 | ||
| C/1989 X1 | 1990 05 05.04574 | 23 43 36.34 | +34 57 46.2 | 061 | ||
| C/1989 X1 | 1990 05 05.04639 | 23 43 36.25 | +34 57 45.0 | 061 | ||
| C/1989 X1 | 1990 05 05.04782 | 23 43 35.82 | +34 57 44.1 | 061 | ||
| C/1989 X1 | 1990 05 05.05183 | 23 43 34.02 | +34 57 38.2 | 061 | ||
| C/1989 X1 | 1990 05 05.05234 | 23 43 33.76 | +34 57 37.9 | 061 | ||
| C/1989 X1 | 1990 05 05.14757 | 23 42 56.47 | +34 55 38.5 | 006 |
