HD 158476

HD 158476
	Location of HD 158476 (circled)
Observation data; Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17h 31m 49.09850s
Declination	−46° 02′ 12.4311″
Apparent magnitude (V)	6.048
Characteristics
Spectral type	F8/G0Ib
B−V color index	+0.83
Astrometry
Radial velocity (Rv)	−29.0 km/s
Proper motion (μ)	RA: +1.810 mas/yr ; Dec.: −3.806 mas/yr
Parallax (π)	1.7610 ± 0.0460 mas
Distance	1,850 ± 50 ly ; (570 ± 10 pc)
Details
Mass	5.8 M☉
Radius	38 R☉
Luminosity	1,142 L☉
Surface gravity (log g)	1.89 cgs
Temperature	5,305 K
Rotational velocity (v sin i)	9.5 km/s
Other designations
	CD−45°11626, HD 158476, HIP 85788, HR 6513, SAO 228075.
Database references
SIMBAD	data

HD 158476 is a supergiant star in the southern constellation of Ara. There is a faint magnitude 10.5 companion at an angular separation of 20.0″ along a position angle of 209° (as of 2013).^[5]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ Paunzen, E. (2015). "A new catalogue of Strömgren-Crawford uvbyβ photometry". Astronomy & Astrophysics. 580: A23. arXiv:1506.04568. Bibcode:2015A&A...580A..23P. doi:10.1051/0004-6361/201526413. S2CID 73623700.
^ ^a ^b ^c De Medeiros, J. R.; et al. (November 2002). "A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars". Astronomy and Astrophysics. 395: 97–98. Bibcode:2002A&A...395...97D. doi:10.1051/0004-6361:20021214.
^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22

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Observation data Epoch J2000 Equinox J2000
Location of HD 158476 (circled)
Constellation	Ara
Right ascension	17^h 31^m 49.09850^s^[1]
Declination	−46° 02′ 12.4311″^[1]
Apparent magnitude (V)	6.048^[2]
Characteristics
Spectral type	F8/G0Ib^[3]
B−V color index	+0.83^[3]
Astrometry

Radial velocity (R_v)	−29.0^[4] km/s
Proper motion (μ)	RA: +1.810^[1] mas/yr Dec.: −3.806^[1] mas/yr
Parallax (π)	1.7610 ± 0.0460 mas^[1]
Distance	1,850 ± 50 ly (570 ± 10 pc)

Details

Mass	5.8^[1] `M`_☉
Radius	38^[1] `R`_☉
Luminosity	1,142^[1] `L`_☉
Surface gravity (log g)	1.89^[1] cgs
Temperature	5,305^[1] K
Rotational velocity (v sin i)	9.5^[3] km/s

Other designations
CD−45°11626, HD 158476, HIP 85788, HR 6513, SAO 228075.
Database references
SIMBAD	data