HD 158476

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).[6]

HD 158476
Location of HD 158476 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension  17h 31m 49.09839s[1]
Declination −46° 02′ 12.4310″[1]
Apparent magnitude (V) 6.048[2]
Characteristics
Spectral type F8/G0Ib[3]
B−V color index +0.83[3]
Astrometry
Radial velocity (Rv)−29.0[4] km/s
Proper motion (μ) RA: +2.05[1] mas/yr
Dec.: −4.16[1] mas/yr
Parallax (π)2.24 ± 0.39[1] mas
Distanceapprox. 1,500 ly
(approx. 450 pc)
Details
Luminosity752[5] L☉
Temperature5,311[5] 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
SIMBADdata

References
  1. van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. 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.
  3. De Medeiros, J. R.; et al. (November 2002), "A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars" (PDF), Astronomy and Astrophysics, 395: 97–98, Bibcode:2002A&A...395...97D, doi:10.1051/0004-6361:20021214
  4. 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.
  5. McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x
  6. 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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