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Star in the constellation Ara From Wikipedia, the free encyclopedia
HD 153791 is a double star in the southern constellation of Ara. The primary is a sixth magnitude A-type main sequence star.[2] It has a magnitude 12.3 companion at an angular separation of 6.0″ along a position angle of 249°, as of 1999.[7]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ara |
Right ascension | 17h 03m 41.68344s[1] |
Declination | −47° 09′ 38.0565″[1] |
Apparent magnitude (V) | 6.07[2] |
Characteristics | |
Spectral type | A5V[3] |
B−V color index | +0.07[4] |
Astrometry | |
Radial velocity (Rv) | 3.8±0.5[2] km/s |
Proper motion (μ) | RA: +0.04[1] mas/yr Dec.: +5.36[1] mas/yr |
Parallax (π) | 6.61 ± 0.44 mas[1] |
Distance | 490 ± 30 ly (150 ± 10 pc) |
Details | |
Luminosity | 66.6[5] L☉ |
Temperature | 8,346[5] K |
Rotational velocity (v sin i) | 70[6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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