HD 163376
{{Short description|Star in the constellation of Scorpius}}
{{Starbox begin}}
{{Starbox observe
| epoch = J2000
| constell = Scorpius
| dec = {{DEC|−41|42|58.6612}}
}}
{{Starbox character
| type = asymptotic giant branch
| u-b =
}}
{{Starbox astrometry
| prop_mo_ra = {{val|−3.97|0.35}}
| prop_mo_dec = {{val|−15.02|0.13}}
| parallax = 7.22
| p_error = 0.27
}}
{{Starbox detail
| source =
| temperature = {{Val|3972|244|194|fmt=commas}}
| rotational_velocity =
| age_myr =
}}
{{Starbox catalog
| names = {{odlist | CD=−41°12231 | HD=163376 | HIP=87936 | HR=6682 | SAO=228578 | NSV=24051 }}
}}
{{Starbox reference
| Simbad = HD+163376
}}
{{End}}
HD 163376 is a single star in the southern constellation of Scorpius. It has a ruddy hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.88. The distance to this star, as determined using parallax measurements, is approximately 450 light years. It is drifting further from the Sun with a radial velocity of about 4 km/s. The absolute magnitude of this star is −0.82.
This object is an aging red giant star with a stellar classification of M0 III, having exhausted the supply of hydrogen at its core then cooled and expanded. At present it has a radius around 61 times the radius of the Sun. It is a suspected variable star of unknown type, with a brightness that has been measured ranging from 4.94 down to 4.98. The star is radiating 832 times the Sun's luminosity from its photosphere at an effective temperature of 3,972 K.
References
{{Reflist|refs=
{{Cite Gaia DR2|5956774809566183296}}
{{cite simbad | title=HD 163376 | access-date=2018-08-03}}
| last1=van Leeuwen | first1=F.
| title=Validation of the new Hipparcos reduction
| journal=Astronomy and Astrophysics
| volume=474 | issue=2 | pages=653–664 | year=2007
| arxiv=0708.1752 | bibcode=2007A&A...474..653V
| doi=10.1051/0004-6361:20078357 | s2cid=18759600
}}
| last=Houk | first=N.
| title=Michigan catalogue of two-dimensional spectral types for the HD stars
| volume=2 | date=1978
| publisher=Dept. of Astronomy, University of Michigan
| bibcode=1978mcts.book.....H }}
| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.
| title=A catalogue of multiplicity among bright stellar systems
| journal=Monthly Notices of the Royal Astronomical Society
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| bibcode=2008MNRAS.389..869E | arxiv=0806.2878
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | s2cid=14878976 }}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters | arxiv=1108.4971
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | s2cid=119257644 }}
| display-authors=1 | last1=Samus | first1=N. N.
| last2=Kazarovets | first2=E. V. | last3=Durlevich | first3=O. V.
| last4=Kireeva | first4=N. N. | last5=Pastukhova | first5=E. N.
| title=General Catalogue of Variable Stars
| version=5.1 | journal=Astronomy Reports
| year=2017 | volume=61 | issue=1 | pages=80–88
| bibcode=2017ARep...61...80S | doi=10.1134/S1063772917010085 | s2cid=125853869 }}
| last1=Eggen | first1=Olin J.
| title=Asymptotic giant branch stars near the sun
| journal=Astronomical Journal
| volume=104 | issue=1 | date=July 1992 | pages=275–313
| doi=10.1086/116239 | bibcode=1992AJ....104..275E }}
}}
{{Stars of Scorpius}}