| WDS ID | 19226-4428 |
| Common catalogue ID | DUN 226 |
| Components | |
| Other Designation | bet 1 Sgr (Arkab Prior) |
| Position angle | 76 |
| Separation | 28.7 |
| Mag First | 3.98 |
| Mag Second | 7.21 |
| Delta mag | 3.23 |
| Spectral Type | B8V+F0V |
| Constellation | Sagittarius |
| RA | 19:22:38.3 |
| Dec | -44:27:32.1 |