V915 Scorpii information

V915 Scorpii
	Position of V915 Scorpii (circled)
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Scorpius
Right ascension	17h 14m 27.65508s
Declination	−39° 45′ 59.9378″
Apparent magnitude (V)	6.22 - 6.64
Characteristics
Evolutionary stage	K-type hypergiant
Spectral type	K0Ia-0
U−B color index	2.48
B−V color index	2.21
Variable type	SRd
Astrometry
Radial velocity (Rv)	46.00 km/s
Proper motion (μ)	RA: −0.758 mas/yr ; Dec.: −1.466 mas/yr
Parallax (π)	0.5485 ± 0.0525 mas
Distance	5600+570; −370 ly ; (1718+175; −115 pc)
Details
Mass	14.7 M☉
Radius	685.6 R☉
Luminosity	74,100 – 185,200 L☉
Surface gravity (log g)	0.003 cgs
Temperature	4,573 K
Metallicity [Fe/H]	0.3491 dex
Other designations
	HR 6392, HD 155603, HIP 84322, CD−39°11212, IRAS 17109-3942, 2MASS J17142765-3945599, WDS J17145-3946
Database references
SIMBAD	data

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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^ Cite error: The named reference ducati was invoked but never defined (see the help page).
^ Cite error: The named reference ROSAT was invoked but never defined (see the help page).
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[dr3-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Cite error: The named reference dr3 was invoked but never defined (see the help page).

[gcvs-2] Cite error: The named reference gcvs was invoked but never defined (see the help page).

[perkins-3] Cite error: The named reference perkins was invoked but never defined (see the help page).

[ducati-4] Cite error: The named reference ducati was invoked but never defined (see the help page).

[ROSAT-5] Cite error: The named reference ROSAT was invoked but never defined (see the help page).

[aavso-6] Cite error: The named reference aavso was invoked but never defined (see the help page).

[bb1994-7] Cite error: The named reference bb1994 was invoked but never defined (see the help page).

[b-h-8] Cite error: The named reference b-h was invoked but never defined (see the help page).

[kervela-9] Cite error: The named reference kervela was invoked but never defined (see the help page).

[dw2020-10] Cite error: The named reference dw2020 was invoked but never defined (see the help page).

[geogebra-11] Cite error: The named reference geogebra was invoked but never defined (see the help page).

Observation data Epoch J2000.0 Equinox J2000.0
Position of V915 Scorpii (circled)
Constellation	Scorpius
Right ascension	17^h 14^m 27.65508^s^[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 (R_v)	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]
Distance	5600+570 −370 ly (1718+175 −115 pc)^[8]

Details

Mass	14.7^[9] `M`_☉
Radius	685.6^[1] `R`_☉
Luminosity	74,100^[10] – 185,200^[11] `L`_☉
Surface gravity (log g)	0.003^[1] cgs
Temperature	4,573^[1] K
Metallicity [Fe/H]	0.3491^[1] dex

Other designations
HR 6392, HD 155603, HIP 84322, CD−39°11212, IRAS 17109-3942, 2MASS J17142765-3945599, WDS J17145-3946
Database references
SIMBAD	data

V915 Scorpii information

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EPIC 204376071

EPIC 204278916