| discov_num | notes | refcode |
| A 2289 | Little observed in recent years despite considerable orbital motion. |
| refcode | metd | author | reference |
| Tok2015c | orb+j | Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. | 2015AJ....150...50T |
| Tok2015c | +St | AJ 150, 50, 2015 (some measures corrected in Tok2017b) | 2017AJ....154..110T |
| idgroup | discov | author |
| 1 | A | Aitken, R.G. |
| 312 | STT | Struve, O. |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 21255+0203 | A 2289 | AB | 1996 | 13 | 345 | 0.1 | 7.82 | 9.27 | A1III | NOD | 212530.78+020235.0 |
| 21255+0203 | A 2289 | AB | 2008 | 14 | 282 | 0.0 | 7.82 | 9.27 | A1III | NOD | 212530.78+020235.0 |
| 21255+0203 | A 2289 | AB | 2014 | 17 | 174 | 0.1 | 7.82 | 9.27 | A1III | NO | 212530.78+020235.0 |
| 21255+0203 | A 2289 | AB | 2017 | 18 | 334 | 0.1 | 7.82 | 9.27 | A1III | NO | 212530.78+020235.0 |