B3III Best B3III standard (southernly accessible or otherwise) is HD 21483 MK43 standard: eps Cas - B3III JM53 standard: HD 21483 - B3III Lesh68 standard: HD 21483 - B3III Walborn71 standard: HD 21483 - B3III Garrison77 standard: HD 21483 - B3III Teff(B3III) = 17100K [rms = +-1000K!]; pri. stan. HD 21483 (see below) # No standard Garrison67, Hiltner69 and Houk do not list a B3III standard. # Primary standards HD 21483 (J0328+3022; V=7) *B3III: JM53,Berger55,Jaschek64(all),Lesh68(stan),Walborn71(stan) B3V: O'Keefe41 Teff: 16208+-200K(Huang10), 17100K(Snow94), 18222+-538K(Fitzpatrick07) => adopt Teff = 17100K. logg=3.00+-0.29(Fitzpatrick07), 3.270+-0.022(Huang10). [m/H]=-0.31+-0.09(Fitzpatrick07). E(B-V) = 0.55+-0.01(Fitzpatrick07), 0.56(Snow94). vsini = 113 km/s (Huang11). eps Cas B3III: MK43