| WDS ID | 18553-2618 |
| Common catalogue ID | SMY 4 |
| Components | AB |
| Other Designation | 34 sig Sgr (Nunki) |
| Position angle | 239 |
| Separation | 349.0 |
| Mag First | 2.04 |
| Mag Second | 9.95 |
| Delta mag | 7.91 |
| Spectral Type | B2.5V |
| Constellation | Sagittarius |
| RA | 18:55:15.9 |
| Dec | -26:17:48.2 |