41 Capricorni
{{short description|Star in the constellation Capricornus}}
{{Starbox begin
| name = 41 Capricorni
}}
{{Starbox observe
| epoch = J2000
| constell = Capricornus
| dec = {{DEC|−21|48|25.8504}}
}}
{{Starbox character
| type = red clump
| variable =
}}
{{Starbox astrometry
| radial_v = {{Val|−45.1|1.3}}
| parallax = 19.06
| p_error = 0.29
}}
{{Starbox detail
| source =
| radius =
| rotational_velocity =
}}
{{Starbox catalog
| names = {{odlist | B=b Cap | F=41 Cap | CD=−23°17057 | FK5= | HD=206356 | HIP=107128 | HR=8285 | SAO=190559 | ADS=15223 | CCDM=J21420-2316 | GC=30365 }}
}}
{{Starbox reference
| Simbad = 41+Cap
}}
{{Starbox end}}
41 Capricorni is a binary star system in the southern constellation of Capricornus. It is faintly visible to the naked eye with an apparent visual magnitude of +5.24. The distance to this star, based upon an annual parallax shift of {{Val|19.06|0.29|ul=mas}}, is around 171 light years. It is moving closer with a heliocentric radial velocity of −45 km/s.
This is a yellow K-type giant star with a stellar classification of K0 III. At the age of around 550 million years it has become a red clump star, which indicates it is generating energy via helium fusion at its core. It has an estimated 2.55 times the mass of the Sun and is radiating 48 times the Sun's luminosity from its photosphere at an effective temperature of 4,910 K. The magnitude 11.5 companion lies at an angular separation of {{Val|5.5|ul=arcsecond}}, as of 2008.
References
{{reflist|refs=
{{cite simbad | title=41 Cap | access-date=2018-06-15 }}
| title=Validation of the new Hipparcos reduction
| last1=van Leeuwen | first1=F. | postscript=.
| 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 }}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}
| last1=Houk | first1=Nancy
| last2=Smith-Moore | first2=M.
| title=Michigan catalogue of two-dimensional spectral types for the HD stars
| volume=4 | location=Ann Arbor | year=1978
| publisher=Dept. of Astronomy, University of Michigan
| bibcode=1988mcts.book.....H | postscript=. }}
| display-authors=1
| last1=Soubiran | first1=C. | last2=Le Campion | first2=J.-F.
| last3=Cayrel de Strobel | first3=G. | last4=Caillo | first4=A.
| title=The PASTEL catalogue of stellar parameters
| journal=Astronomy and Astrophysics
| volume=515 | page=A111 |date=June 2010
| doi=10.1051/0004-6361/201014247 | bibcode=2010A&A...515A.111S
| arxiv=1004.1069 | s2cid=118362423 | postscript=. }}
| 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
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E
| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}
| display-authors=1 | last1=Takeda | first1=Yoichi
| last2=Sato | first2=Bun'ei | last3=Murata | first3=Daisuke
| title=Stellar Parameters and Elemental Abundances of Late-G Giants
| journal=Publications of the Astronomical Society of Japan
| volume=60 | issue=4 | pages=781–802 | date=August 2008
| bibcode=2008PASJ...60..781T |arxiv = 0805.2434
| doi=10.1093/pasj/60.4.781 | s2cid=16258166 | postscript=. }}
| last1=Alves | first1=David R.
| title=K-Band Calibration of the Red Clump Luminosity
| journal=The Astrophysical Journal
| volume=539 | issue=2 | pages=732–741 | date=August 2000
| doi=10.1086/309278 | bibcode=2000ApJ...539..732A
| postscript=. | arxiv=astro-ph/0003329 | s2cid=16673121
}}
}}
{{Stars of Capricornus}}
Category:Horizontal-branch stars