HD 158220
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 31m 23.28387s |
| Declination | −56° 55′ 15.4672″ |
| Apparent magnitude (V) | 5.95 |
| Characteristics | |
| Spectral type | B7II-III |
| B−V color index | −0.08 |
| Variable type | Be star |
| Astrometry | |
| Radial velocity (Rv) | -3 km/s |
| Proper motion (μ) | RA: −0.29 mas/yr Dec.: −3.72 mas/yr |
| Parallax (π) | 1.78±0.34 mas |
| Distance | approx. 1,800 ly (approx. 600 pc) |
| Details | |
| Luminosity | 1,176 L☉ |
| Temperature | 9,657 K |
| Other designations | |
| V862 Arae, CD-56° 6893, HD 158220, HIP 85751, HR 6505, SAO 244808. | |
| Database references | |
| SIMBAD | data |
HD 158220 is a giant Be star in the southern constellation of Ara. Its apparent magnitude is 5.9, making it faintly visible to the naked eye under good observing conditions. This is a pulsating variable star that changes brightness by an amplitude of 0.030 magnitude over a period of 1.15 days.
The Hipparcos data revealed that HD 158220 is a variable star. It was given its variable star designation, V862 Arae, in 1999.