| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1989 X1 | 1990 04 26.47986 | 00 32 35.48 | +36 14 12.0 | 688 | ||
| C/1989 X1 | 1990 04 26.76775 | 00 31 06.20 | +36 14 56.3 | 381 | ||
| C/1989 X1 | 1990 04 26.76917 | 00 31 05.79 | +36 14 56.3 | 381 | ||
| C/1989 X1 | 1990 04 26.77066 | 00 31 05.31 | +36 14 56.7 | 381 | ||
| C/1989 X1 | 1990 04 26.77375 | 00 31 04.27 | +36 14 57.8 | 381 | ||
| C/1989 X1 | 1990 04 26.77625 | 00 31 03.51 | +36 14 58.3 | 381 | ||
| C/1989 X1 | 1990 04 26.77750 | 00 31 03.17 | +36 14 57.9 | 381 | ||
| C/1989 X1 | 1990 04 27.12751 | 00 29 13.73 | +36 15 31.8 | 587 | ||
| C/1989 X1 | 1990 04 27.49931 | 00 27 16.97 | +36 15 47.1 | 675 | ||
| C/1989 X1 | 1990 04 28.14583 | 00 23 51.83 | +36 15 18.6 | 006 | ||
| C/1989 X1 | 1990 04 28.15799 | 00 23 47.89 | +36 15 17.6 | 006 | ||
| C/1989 X1 | 1990 04 29.10943 | 00 18 40.89 | +36 12 25.0 | 480 | ||
| C/1989 X1 | 1990 04 29.11921 | 00 18 37.69 | +36 12 23.6 | 4.4 | T | 974 |
| C/1989 X1 | 1990 04 29.12023 | 00 18 37.37 | +36 12 21.1 | 587 | ||
| C/1989 X1 | 1990 04 29.12587 | 00 18 35.31 | +36 12 21.7 | 974 | ||
| C/1989 X1 | 1990 04 29.14306 | 00 18 29.74 | +36 12 16.6 | 006 | ||
| C/1989 X1 | 1990 04 29.14722 | 00 18 28.45 | +36 12 14.1 | 006 | ||
| C/1989 X1 | 1990 04 29.75442 | 00 15 09.34 | +36 09 06.8 | 381 | ||
| C/1989 X1 | 1990 04 29.77956 | 00 15 00.93 | +36 08 59.0 | 381 | ||
| C/1989 X1 | 1990 04 29.78070 | 00 15 00.47 | +36 08 58.4 | 5.0 | T | 385 |