K1.5IV

Keenan89 lists only a single K1.5IV standard: HD 145148. 

(B-V)(K1.5V) = 0.988 ; pri. stan. HD 145148

Mv(K1.5V) = 3.57 ; pri. stan. HD 145148



# Primary Standard

HD 145148 = HR 6014 = HIP 79137 
  G8: Bidelman85
  K0IV: Roman55
  K1IV: Harlan74
  K1+III-IV: Keenan53(CN wk, 4172A strong)
 *K1.5IV: Keenan89(stan)
  K2V: Adams35

  V=5.93(HIP), B-V=0.988+-0.005(HIP), V-I=1.02+-0.07(HIP).
  plx=33.7343+-0.0353mas(GaiaEDR3) => Mv=3.57.