| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ara |
| Right ascension | 16h 39m 44.7306s |
| Declination | -56° 59′ 39.867″ |
| Apparent magnitude (V) | 6.65 |
| Characteristics | |
| Spectral type | B9IV/V |
| B−V color index | -0.06 ± 0.44 |
| Variable type | Algol variable |
| Astrometry | |
| Proper motion (μ) | RA: -4.41 mas/yr Dec.: -13.28 mas/yr |
| Parallax (π) | 12.44 ± 2.03 mas |
| Distance | approx. 260 ly (approx. 80 pc) |
| Absolute magnitude (MV) | 6.74 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 1,054 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.) |
|
R Arae or HD 149730 is an Algol-type eclipsing binary.