| WDS ID | 13239+5456 |
| Common catalogue ID | STF 1744 |
| Components | AB |
| Other Designation | 79 zet 1,2 UMa (Mizar) |
| Position angle | 153 |
| Separation | 14.4 |
| Mag First | 2.23 |
| Mag Second | 3.88 |
| Delta mag | 1.65 |
| Spectral Type | A1VpSrSi |
| Constellation | Ursa major |
| RA | 13:23:55.4 |
| Dec | +54:55:31.5 |