HD 156331
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 19m 30.51713s |
| Declination | −50° 03′ 49.5490″ |
| Apparent magnitude (V) | 6.27 (7.0 + 7.0) |
| Characteristics | |
| Spectral type | F8III + B9V |
| B−V color index | +0.41 |
| Astrometry | |
| Radial velocity (Rv) | +10.50±1.2 km/s |
| Proper motion (μ) | RA: +8.76 mas/yr Dec.: −32.86 mas/yr |
| Parallax (π) | 16.94±0.51 mas |
| Distance | 193 ± 6 ly (59 ± 2 pc) |
| Absolute magnitude (MV) | +2.42 |
| Other designations | |
| CD−49°11324, HD 156331, HIP 84759, HR 6423, SAO 244631 | |
| Database references | |
| SIMBAD | data |
HD 156331 is double star in the southern constellation of Ara. As of 2014, the pair have an angular separation of less than an arc second along a position angle of 49°.