F1IV JM53, MK73, MorganAbt72, Cowley74, Houk88, Garcia89 and GrayGarrison89 do not list any F1IV standards Gray01/03/06 classify no stars as "F1IV", but they list two F1IV-V: HD 138803 (HIP 76198) and HD 90071 (HIP 50868) (B-V)(F0IV) = 0.30 ; adopted (B-V)(F1IV) = 0.314 ; exemplar HD 203803 = HR 8190 (B-V)(F1IV) = 0.347(+-0.027 sem,+-0.042 stdev) ; SIMBAD median F1IV d<75pc,V<6.5(N=4) (B-V)(F2IV) = 0.35 ; adopted => adopt (B-V)(F1IV) = 0.33 [updated 2/3/2022] Mv(F1IV) = 1.8 ; GrayCorbally09 Mv(F1IV) = 2.12 ; exemplar HD 203803 = HR 8190 Mv(F1IV) = 2.27(+-0.20 sem,+-0.31 stdev) ; SIMBAD median F1IV d<75pc,V<6.5(N=4) Teff(F1IV) = 7211K ; exemplar HD 203803 = HR 8190 # Exemplar HD 203803 = HR 8190 = HIP 105652 F0IV/V: Adams35 *F1IV: Cowley84,Abt95,BSC(Hoffleit91) V=5.70(HIP), B-V=0.314+-0.004(HIP), V-Ic=0.36+-0.01(HIP). plx=19.2605+-0.0464mas => Mv=2.12 => 0.50 mag above MS. Star has new 12th mag companion few" away in GaiaDR2 and GaiaEDR3 (not yet in SIMBAD or WDS). Teff=7211+-50K(Zorec12). # Stars del Aql = HR 7377 = HD 182640 = HIP 95501 F0IV: Slettebak55,MorganAbt72(stan),Cowley74 F0: Bidelman85 *F1IV-V(n): Gray01 F2IV-V: GrayGarrison89 F2III: Cucchiaro78 A9III: Abt95 A5V: Adams35 Ap: Smith71