5 Ursae Minoris
{{short description|Star in the constellation Ursa Minor}}
{{Starbox begin
| name = 5 Ursae Minoris
}}
{{Starbox observe
| epoch = J2000
| constell = Ursa Minor
| dec = {{DEC|+75|41|45.5717}}
}}
{{Starbox character
| variable =
}}
{{Starbox astrometry
| parallax = 9.09
| p_error = 0.13
}}
{{Starbox detail
| source =
| temperature = {{Val|4095|39|fmt=commas}}
}}
{{Starbox catalog
| names = {{odlist | F=5 UMi | BD=+76° 527 | FK5=1379 | HD=127700 | HIP=70692 | HR=5430 | NSV=6687 | SAO=8024 | WDS=J14275+7542A }}
}}
{{Starbox reference
| Simbad = 5+UMi
}}
{{Starbox end}}
5 Ursae Minoris is a star in the circumpolar constellation of Ursa Minor. It is a faint star but visible to the naked eye with an apparent visual magnitude of 4.253. The distance to this star, as determined from an annual parallax shift of {{Val|9.09|0.13|ul=mas}}, is about 110 pc. It is moving further away with a heliocentric radial velocity of +9 km/s.
With an age of around two billion years, this is an evolved red giant with a stellar classification of K4-III; a star that has used up its core hydrogen and has expanded. It is a mild barium star, which may indicate it is a binary with a white dwarf companion, and is very lithium-weak. The star has an estimated 1.86 times the mass of the Sun and has expanded to about 16 times the Sun's radius. It is radiating 447 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,095 K.
References
{{reflist|refs=
{{cite simbad | title=5 UMi | access-date=2018-04-02 }}
| title=Validation of the new Hipparcos reduction
| last1=van Leeuwen | first1=F.
| 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 | page=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| arxiv=1108.4971 | s2cid=119257644}}.
| title=The binary nature of the barium stars. II - Velocities, binary frequency, and preliminary orbits
| last1=McClure | first1=R. D.
| journal=Astrophysical Journal, Part 1
| volume=268 | date=May 1, 1983 | pages=264–273
| doi=10.1086/160951 | bibcode=1983ApJ...268..264M | doi-access=free }}.
{{citation | display-authors=1
| title=A search for lithium-rich giant stars
| last1=Brown | first1=Jeffery A. | last2=Sneden | first2=Christopher
| last3=Lambert | first3=David L. | last4=Dutchover | first4=Edward Jr.
| journal=Astrophysical Journal Supplement Series
| volume=71 | pages=293–322 | date=October 1989
| doi=10.1086/191375 | bibcode=1989ApJS...71..293B | doi-access=free }}.
| display-authors=1 | last1=De Medeiros | first1=J. R.
| last2=do Nascimento | first2=J. D. Jr. | last3=Sankarankutty | first3=S.
| last4=Costa | first4=J. M. | last5=Maia | first5=M. R. G.
| title=Rotation and lithium in single giant stars
| journal=Astronomy and Astrophysics
| volume=363 | pages=239–243 | date=November 2000
| bibcode=2000A&A...363..239D | arxiv=astro-ph/0010273 }}.
{{citation | display-authors=1
| last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L.
| last3=Covino | first3=S. | last4=Pozzi | first4=A.
| title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)
| edition=Third | journal=Astronomy and Astrophysics
| volume=367 | issue=2 | pages=521–524 | date=February 2001
| doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P
| arxiv=astro-ph/0012289 | s2cid=425754}}.
| title=The Perkins catalog of revised MK types for the cooler stars
| journal=Astrophysical Journal Supplement Series
| volume=71 | page=245 | year=1989
| last1=Keenan | first1=Philip C. | last2=McNeil | first2=Raymond C.
| bibcode=1989ApJS...71..245K | doi=10.1086/191373 }}.
| title=Abundances in the Local Region. I. G and K Giants
| last1=Luck | first1=R. Earle
| journal=Astronomical Journal
| volume=150 | issue=3 | at=88 | year=2015
| arxiv=1507.01466 | bibcode=2015AJ....150...88L
| doi=10.1088/0004-6256/150/3/88 | s2cid=118505114}}.
{{citation | 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 }}.
}}
{{Stars of Ursa Minor}}
{{DEFAULTSORT:5 Ursae Minoris}}