| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ara |
| Right ascension | 17h 01m 47.3875s |
| Declination | -58° 57′ 29.681″ |
| Apparent magnitude (V) | 6.263 |
| Characteristics | |
| Spectral type | B2IVne |
| B−V color index | -0.03 |
| Variable type | Be star |
| Astrometry | |
| Radial velocity (Rv) | -6 km/s |
| Proper motion (μ) | RA: -2.65 mas/yr Dec.: -7.58 mas/yr |
| Parallax (π) | 1.43 ± 0.8 mas |
| Distance | approx. 2000 ly (approx. 700 pc) |
| Absolute magnitude (MV) | 6.142 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 3.1 L☉ |
| Temperature | 10,000–30,000 K |
| Rotational velocity (v sin i) | 201 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
HD 153261 or V828 Arae is a Be star.
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