What is Polaris (star)?
{{redirect|North Star}} {{starbox begin |name=Polaris }} {{Starbox image | image = {{Location mark | image = Ursa Minor IAU.svg | width = 280 | float = center | alt = Chart showing star positions and boundaries of the Ursa Minor constellation | mark = Red circle.svg | mark_width = 15 | x = 499 | y = 220 }} | caption = Polaris (α Ursae Minoris, circled in red) in the constellation Ursa Minor (white area) }} {{Starbox observe | epoch = J2000 | equinox = <!--Equinox of coordinates (defaults to epoch)--> | constell = [[Ursa Minor]] | component1 = α UMi Aa | ra1 = {{RA|02|31|49.09}} | dec1 = {{DEC|+89|15|50.8}} | appmag_v1 = 1.98<ref name=hst>{{Cite journal | last1 = Evans | first1 = N. R. | last2 = Schaefer | first2 = G. H. | last3 = Bond | first3 = H. E. | last4 = Bono | first4 = G. | last5 = Karovska | first5 = M. | last6 = Nelan | first6 = E. | last7 = Sasselov | first7 = D. | last8 = Mason | first8 = B. D. | doi = 10.1088/0004-6256/136/3/1137 | title = Direct Detection of the Close Companion of Polaris with The Hubble Space Telescope | url = https://archive.org/details/sim_astronomical-journal_2008-09_136_3/page/1137 | journal = The Astronomical Journal | volume = 136 | issue = 3 | pages = 1137 | year = 2008 |arxiv = 0806.4904 |bibcode = 2008AJ....136.1137E | s2cid = 16966094 }}</ref> (variable 1.86–2.13) | component2 = α UMi Ab | ra2 = <!--Right Ascension of the second component--> | dec2 = <!--Declination of the second component--> | appmag_v2 = 9.2<ref name=hst/> | component3 = α UMi B | ra3 = {{RA|02|30|41.63}} | dec3 = {{DEC|+89|15|38.1}} | appmag_v3 = 8.7<ref name=hst/> }} {{Starbox character | component = α UMi Aa | type = <!--Type of star (e.g., main sequence star, protostar, white dwarf, neutron star, etc.)--> | class = F7Ib<ref name=lee/> | r-i = <!--R−I color--> | v-r = <!--V−R color--> | b-v = 0.60<ref name=hst/> | u-b = 0.38<ref name=hst/> | j-h = <!--J−H color--> | j-k = <!--J−K color--> | variable = [[Classical Cepheid]]<ref name=gcvs>{{cite journal|bibcode=2009yCat....102025S|title=V