| discov_num | notes | refcode |
| MCA 66 | Aa,Ab: 12 Aqr. | |
| A measure on 1980.7257 was incorrectly attributed to HR 8059 by | ||
| McAlister et al. (1983); it actually belongs to ADS 13944. | McA1983 |
| refcode | metd | author | reference |
| McA1983 | Sc j | McAlister, H.A., Hendry, E.M., Hartkopf, W.I., Campbell, B.G., & Fekel, F.C. | 1983ApJS...51..309M |
| McA1983 | ApJS 51, 309, 1983 |
| idgroup | discov | author |
| 1 | STF | Struve, F.G.W. |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 21041-0549 | MCA 66 | Aa,Ab | 2007 | 7 | 245 | 0.2 | 5.53 | G4III | N | 210404.71-054923.0 | |
| 21041-0549 | MCA 66 | Aa,Ab | 2008 | 10 | 64 | 0.3 | 5.53 | G4III | N | 210404.71-054923.0 | |
| 21041-0549 | MCA 66 | Aa,Ab | 2009 | 11 | 62 | 0.3 | 5.53 | G4III | N D | 210404.71-054923.0 | |
| 21041-0549 | MCA 66 | Aa,Ab | 2015 | 12 | 238 | 0.3 | 5.90 | 8.30 | G4III | N | 210404.71-054923.0 |
| 21041-0549 | MCA 66 | Aa,Ab | 2017 | 14 | 237 | 0.3 | 5.90 | 8.30 | G4III | N | 210404.71-054923.0 |
| 21041-0549 | MCA 66 | Aa,Ab | 2021 | 15 | 54 | 0.3 | 5.90 | 8.30 | G4III | N | 210404.71-054923.0 |