Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ara |
Right ascension | 17h 31m 23.28387s[2] |
Declination | −56° 55′ 15.4672″[2] |
Apparent magnitude (V) | 5.95[3] |
Characteristics | |
Spectral type | B7II-III[4] |
B−V color index | −0.08[3] |
Variable type | Be star[5] |
Astrometry | |
Radial velocity (Rv) | -3[6] km/s |
Proper motion (μ) | RA: −0.29[2] mas/yr Dec.: −3.72[2] mas/yr |
Parallax (π) | 1.78 ± 0.34 mas[2] |
Distance | approx. 1,800 ly (approx. 600 pc) |
Details | |
Luminosity | 1,176[7] L☉ |
Temperature | 9,657[7] K |
Other designations | |
Database references | |
SIMBAD | data |
HD 158220 is a giant Be star in the southern constellation of Ara. This is a pulsating variable star that changes brightness by an amplitude of 0.030 magnitude over a period of 1.15 days.[5]
MAST
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