V915 Scorpii

V915 Scorpii
Position of V915 Scorpii (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius
Right ascension 17h 14m 27.65508s[1]
Declination −39° 45′ 59.9378″[1]
Apparent magnitude (V) 6.22 - 6.64[2]
Characteristics
Evolutionary stage K-type hypergiant
Spectral type K0Ia-0[3]
U−B color index 2.48[4]
B−V color index 2.21[5]
Variable type SRd[6]
Astrometry
Radial velocity (Rv)46.00[7] km/s
Proper motion (μ) RA: −0.758[1] mas/yr
Dec.: −1.466[1] mas/yr
Parallax (π)0.5485 ± 0.0525 mas[1]
Distance5600+570
−370 ly
(1718+175
−115 pc)[8]
Details
Mass14.7[9] M☉
Radius685.6[1] R☉
Luminosity74,100[10] – 185,200[11] L☉
Surface gravity (log g)0.003[1] cgs
Temperature4,573[1] K
Metallicity [Fe/H]0.3491[1] dex
Other designations
HR 6392, HD 155603, HIP 84332, CD−39°11212, IRAS 17109-3942, 2MASS J17142765-3945599, WDS J17145-3946
Database references
SIMBADdata

V915 Scorpii (HR 6392, HD 155603) is a hypergiant and semiregular variable star, located 1,718 parsecs (5,600 ly) away in the constellation Scorpius. Its apparent magnitude varies between 6.22 and 6.64, being heavily diminshed by 2.93 magnitudes due to interstellar extinction.

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