| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1989 Y1 | 1989 12 24.09306 | 20 05 46.66 | +26 20 38.2 | 688 | ||
| C/1989 Y1 | 1989 12 24.40799 | 20 06 23.38 | +26 23 08.8 | 12.0 | T | 400 |
| C/1989 Y1 | 1989 12 24.41389 | 20 06 23.92 | +26 23 10.7 | 400 | ||
| C/1989 Y1 | 1989 12 24.41979 | 20 06 24.79 | +26 23 15.4 | 400 | ||
| C/1989 Y1 | 1989 12 25.70174 | 20 08 56.18 | +26 33 26.5 | 046 | ||
| C/1989 Y1 | 1989 12 25.70608 | 20 08 56.66 | +26 33 28.5 | 046 | ||
| C/1989 Y1 | 1989 12 25.76219 | 20 09 03.32 | +26 33 56.0 | 494 | ||
| C/1989 Y1 | 1989 12 26.73767 | 20 11 00.13 | +26 41 56.8 | 046 | ||
| C/1989 Y1 | 1989 12 26.74062 | 20 11 00.59 | +26 41 57.9 | 046 | ||
| C/1989 Y1 | 1989 12 27.76374 | 20 13 04.87 | +26 50 34.6 | 978 | ||
| C/1989 Y1 | 1989 12 27.79028 | 20 13 08.03 | +26 50 48.5 | 026 | ||
| C/1989 Y1 | 1989 12 27.80679 | 20 13 10.16 | +26 50 57.4 | 978 | ||
| C/1989 Y1 | 1989 12 28.37419 | 20 14 19.64 | +26 55 50.0 | 11.0 | T | 897 |
| C/1989 Y1 | 1989 12 28.37674 | 20 14 19.47 | +26 55 52.2 | 892 | ||
| C/1989 Y1 | 1989 12 28.39525 | 20 14 22.11 | +26 56 01.0 | 897 | ||
| C/1989 Y1 | 1989 12 28.71675 | 20 15 02.14 | +26 58 46.8 | 046 | ||
| C/1989 Y1 | 1989 12 28.71987 | 20 15 02.42 | +26 58 50.3 | 046 | ||
| C/1989 Y1 | 1989 12 29.72028 | 20 17 07.12 | +27 07 40.3 | 046 | ||
| C/1989 Y1 | 1989 12 29.72329 | 20 17 07.36 | +27 07 41.9 | 046 | ||
| C/1989 Y1 | 1989 12 31.72119 | 20 21 21.24 | +27 25 56.3 | 046 |
