| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1989 X1 | 1990 05 05.15382 | 23 42 54.01 | +34 55 30.7 | 006 | ||
| C/1989 X1 | 1990 05 05.73750 | 23 39 02.19 | +34 42 07.9 | 5.0 | T | 392 |
| C/1989 X1 | 1990 05 05.79510 | 23 38 38.86 | +34 40 48.8 | 6.0 | T | 372 |
| C/1989 X1 | 1990 05 05.80621 | 23 38 34.38 | +34 40 32.8 | 372 | ||
| C/1989 X1 | 1990 05 05.86644 | 23 38 09.88 | +34 38 54.1 | 168 | ||
| C/1989 X1 | 1990 05 05.86901 | 23 38 08.64 | +34 38 48.2 | 168 | ||
| C/1989 X1 | 1990 05 05.87500 | 23 38 06.27 | +34 38 42.5 | 168 | ||
| C/1989 X1 | 1990 05 05.87708 | 23 38 05.42 | +34 38 39.7 | 168 | ||
| C/1989 X1 | 1990 05 08.14271 | 23 22 01.00 | +33 33 39.8 | 006 | ||
| C/1989 X1 | 1990 05 08.14896 | 23 21 58.21 | +33 33 27.5 | 006 | ||
| C/1989 X1 | 1990 05 08.42865 | 23 19 51.62 | +33 23 50.1 | 657 | ||
| C/1989 X1 | 1990 05 12.12917 | 22 48 51.63 | +30 38 36.1 | 006 | ||
| C/1989 X1 | 1990 05 12.13403 | 22 48 48.96 | +30 38 19.5 | 006 | ||
| C/1989 X1 | 1990 05 15.13958 | 22 18 20.48 | +27 12 17.5 | 006 | ||
| C/1989 X1 | 1990 05 15.14688 | 22 18 15.54 | +27 11 41.9 | 006 | ||
| C/1989 X1 | 1990 05 17.04948 | 21 55 59.10 | +24 14 38.5 | 061 | ||
| C/1989 X1 | 1990 05 17.05069 | 21 55 58.10 | +24 14 27.5 | 061 | ||
| C/1989 X1 | 1990 05 17.05174 | 21 55 56.98 | +24 14 25.8 | 061 | ||
| C/1989 X1 | 1990 05 17.05434 | 21 55 55.31 | +24 14 14.6 | 061 | ||
| C/1989 X1 | 1990 05 17.41067 | 21 51 28.51 | +23 36 03.4 | 657 |