HD 165493
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 18h 08m 30.1082s |
| Declination | -45° 46′ 01.254″ |
| Apparent magnitude (V) | 6.153 |
| Characteristics | |
| Spectral type | B7.5II |
| U−B color index | -0.49 |
| B−V color index | -0.08 |
| Astrometry | |
| Radial velocity (Rv) | -35 km/s |
| Proper motion (μ) | RA: -2.56 mas/yr Dec.: -17.39 mas/yr |
| Parallax (π) | 4.0 ± 1.01 mas |
| Distance | approx. 800 ly (approx. 250 pc) |
| Absolute magnitude (MV) | 6.065 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 2,24268 L☉ |
| Temperature | 10,000–30,000 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
HD 165493 is double star.
References
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