| discov_num | notes | refcode |
| BUP 227 | zet Cyg = 64 Cyg. A is a spectroscopic binary. The Bright Star | |
| Catalogue lists the spectral type as G8III-IIIaBa0.6. | ||
| Mk III Limb-darkened diameter 2.821 +/- 0.028 mas. | MkT2003 |
| refcode | metd | author | reference |
| MkT2003 | Km - | Mozurkewich, D., Armstrong, J.T., Hindsley, R., Quirrenbach, A., Hummel, C.A., | 2003AJ....126.2502M |
| MkT2003 | +not | Hutter, D., Johnston, K.J., Hajian, A., Elias, N.M., II, Buscher, D., & Simon, R. | |
| MkT2003 | AJ 126, 2502, 2003 |
| idgroup | discov | author |
| 1 | BAS | Barstow, M.A., Bond, H.E., Burleigh, M.R., & Holberg, J.B. |
| 2 | BUP | Burnham proper motion stars (see Burnham, Carnegie Inst. Wash. #168, 1913) |
| 2 | FYM | Fay, M. |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 21129+3014 | BUP 227 | AB | 1998 | 4 | 205 | 65.8 | 3.30 | 11.70 | G8III | N D | 211256.17+301336.9 |
| 21129+3014 | BUP 227 | AB | 2008 | 5 | 205 | 65.6 | 3.30 | 11.70 | G8III | N D | 211256.17+301336.9 |
| 21129+3014 | BUP 227 | AB | 2012 | 7 | 206 | 64.8 | 3.30 | 11.70 | G8III | N D | 211256.17+301336.9 |
| 21129+3014 | BUP 227 | AB | 2015 | 8 | 205 | 65.2 | 3.30 | 11.70 | G8III | N | 211256.19+301336.9 |