| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1989 Y2 | 1989 12 31.80267 | 04 04 27.79 | +00 30 42.9 | 046 | ||
| C/1989 Y2 | 1990 01 01.45990 | 04 01 17.40 | +00 23 55.0 | 14.0 | T | 897 |
| C/1989 Y2 | 1990 01 01.46910 | 04 01 14.74 | +00 23 49.5 | 897 | ||
| C/1989 Y2 | 1990 01 01.74838 | 03 59 54.94 | +00 20 58.7 | 056 | ||
| C/1989 Y2 | 1990 01 01.77315 | 03 59 48.80 | +00 20 45.0 | 056 | ||
| C/1989 Y2 | 1990 01 01.81753 | 03 59 35.87 | +00 20 16.1 | 046 | ||
| C/1989 Y2 | 1990 01 01.82193 | 03 59 34.47 | +00 20 14.6 | 046 | ||
| C/1989 Y2 | 1990 01 03.76528 | 03 50 46.67 | +00 02 00.8 | 056 | ||
| C/1989 Y2 | 1990 01 04.52535 | 03 47 30.86 | -00 04 38.1 | 385 | ||
| C/1989 Y2 | 1990 01 04.53993 | 03 47 27.19 | -00 04 43.9 | 385 | ||
| C/1989 Y2 | 1990 01 20.44365 | 02 59 00.76 | -01 21 54.6 | 413 | ||
| C/1989 Y2 | 1990 01 21.40255 | 02 57 04.78 | -01 23 51.2 | 897 | ||
| C/1989 Y2 | 1990 01 21.45301 | 02 56 58.46 | -01 23 54.0 | 897 |