What is Merak?
{{Starbox begin | name = Beta Ursae Majoris }} {{Starbox image | image={{Location map|100x100 |AlternativeMap=Ursa Major IAU.svg |caption= |width=320 |lat=63.57 |long=49.82 |mark=Cercle rouge 100%.svg | marksize=12 |float=center }}| caption=Merak in Ursa Major }} {{Starbox observe | epoch = [[J2000.0]] | constell = [[Ursa Major]] | ra = {{RA|11|01|50.47654}}<ref name=aaa474_2_653/> | dec = {{DEC|+56|22|56.7339}}<ref name=aaa474_2_653/> | appmag_v = +2.37<ref name=clpl4_99/> }} {{ Starbox character | class = A1IVps<ref name=phillips/> | variable = Suspected | b-v = -0.02<ref name=clpl4_99/> | u-b = +0.00<ref name=clpl4_99/> }} {{ Starbox astrometry | radial_v = -12.0<ref name=rgcrv/> | prop_mo_ra = +81.43<ref name=aaa474_2_653/> | prop_mo_dec = +33.49<ref name=aaa474_2_653/> | parallax = 40.90 | p_error = 0.16 | parallax_footnote = <ref name=aaa474_2_653/> | absmag_v = +0.61<ref name=Eggen1998/> }} {{ Starbox detail | mass = 2.7<ref name=apj663_1_365/> | radius = {{nowrap|3.021 ± 0.038}}<ref name=apj746_1_101/> | luminosity = {{nowrap|63.015 ± 1.307}}<ref name=apj746_1_101/> | temperature = {{nowrap|9377 ± 75}}<ref name=apj746_1_101/> | age_myr = {{nowrap|500 ± 100}}<ref name=aaa442_2_563/> | gravity = 3.83<ref name=aaa442_2_563/> | metal_fe = | rotational_velocity = 46<ref name=aaa463_2_671/> }} {{ Starbox catalog | names=Merak, Mirak,<ref name=allen1899/> β&nbsp;Ursae Majoris, β&nbsp;UMa, Beta&nbsp;UMa, 48&nbsp;Ursae Majoris, [[Bonner Durchmusterung|BD]]+57°1302, [[Fifth Fundamental Catalogue|FK5]]&nbsp;416, [[Boss General Catalogue|GC]]&nbsp;15145, [[Henry Draper Catalogue|HD]]&nbsp;95418, [[Hipparcos catalogue|HIP]]&nbsp;53910, [[Bright Star Catalogue|HR]]&nbsp;4295, [[PPM Star Catalogue|PPM]]&nbsp;32912, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]]&nbsp;27876<ref name=SIMBAD/> }} {{Starbox reference | Simbad = beta+UMa }} {{ Starbox end }} '''Merak''' or '''Beta Ursae Majoris''' is a [[star]] in the [[constellation]] [[Ursa Major]]. It is a white star three