Astronomy:HD 158476

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Star in the constellation Ara
HD 158476
Ara constellation map.svg
Red circle.svg
Location of HD 158476 (circled)
Observation data
Equinox J2000.0]] (ICRS)
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

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]

References

  1. 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode2007A&A...474..653V. 
  2. Paunzen, E. (2015). "A new catalogue of Strömgren-Crawford uvbyβ photometry". Astronomy & Astrophysics 580: A23. doi:10.1051/0004-6361/201526413. Bibcode2015A&A...580A..23P. 
  3. 3.0 3.1 3.2 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, doi:10.1051/0004-6361:20021214, Bibcode2002A&A...395...97D, http://www.aanda.org/articles/aa/pdf/2002/43/aa2890.pdf 
  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. doi:10.1134/S1063773706110065. Bibcode2006AstL...32..759G. 
  5. 5.0 5.1 McDonald, I. et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode2012MNRAS.427..343M 
  6. Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466, doi:10.1086/323920, Bibcode2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22 

External links