| WDS ID | 21186+6235 |
| Common catalogue ID | BU 1502 |
| Components | AB |
| Other Designation | 5 alf Cep (Alderamin) |
| Position angle | 17 |
| Separation | 196.6 |
| Mag First | 2.46 |
| Mag Second | 11.46 |
| Delta mag | 9.0 |
| Spectral Type | A7V |
| Constellation | Cepheus |
| RA | 21:18:34.6 |
| Dec | +62:35:07.6 |