HD 165493
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 18h 08m 30.10807s |
| Declination | −45° 46′ 01.2534″ |
| Apparent magnitude (V) | 6.153 (6.15 + 9.55) |
| Characteristics | |
| Spectral type | B7.5II |
| U−B color index | −0.49 |
| B−V color index | −0.08 |
| Astrometry | |
| Radial velocity (Rv) | −35.0±4.3 km/s |
| Proper motion (μ) | RA: −2.88 mas/yr Dec.: −17.29 mas/yr |
| Parallax (π) | 3.68±0.60 mas |
| Distance | approx. 900 ly (approx. 270 pc) |
| Absolute magnitude (MV) | −0.97 |
| Details | |
| HD 165493 A | |
| Mass | 4.2 M☉ |
| Radius | 5.4 R☉ |
| Luminosity | 521 L☉ |
| Surface gravity (log g) | 3,58 cgs |
| Temperature | 12,849 K |
| Other designations | |
| CD−45 12215, HD 165493, HIP 88859, HR 6759, SAO 228734, WDS J18085-4546AB | |
| Database references | |
| SIMBAD | data |
| B | |
HD 165493 is double star in the southern constellation of Ara. As of 2011, the two components have an angular separation of 4″ along a position angle of 257°.