FF5III

HR 856 is the F5III dagger standard in MK73, but there is no
F5III anchor standard according to Garrison94. 

HR 856 is probably the best southernly accessible F5III standard (J0253+1629; V=6.3)

MK43 standards:	          alf Tri - F5III
			  xi Gem - F5III
			  bet Del - F5III
MorganAbt72 standard:     HR 856 - F5III 
MK73 dagger standard:     HR 856 - F5III 
Houk standard:		  bet Del - F5III
Cowley76 standard:        HR 856 - F5III
MK78 standards:           48 Gem (=HR 2706) - F5III-IV
                          HR 7495 - F5II-III
GrayAtlas standard:       48 Gem (=HR 2706) - F5III-IV 
GrayNstars standards:     60 UMa - F5III
GrayCorbally10 standards: HR 7495 - F5II-III
			  48 Gem (=HR 2706) - F5III-IV
			  60 UMa - F5III

(J-H)(F5III) = 0.175 (+-0.053 sem, +-0.074 stdev) ; N=2 F5III from Skiff compendium w/i 15deg of NGP, 2MASS photometry AAA flags
(J-H)(F5III) = 0.195 ; smoothed relation from giants in Skiff compendium w/i 15 deg of NGP, 2MASS photometry AAA flags
=> adopt (J-H)(F5III) = 0.195 [updated 10/30/2020]

(H-Ks)(F5III) = 0.061 (+-0.016 sem, +-0.023 stdev) ; N=2 F5III from Skiff compendium w/i 15deg of NGP, 2MASS photometry AAA flags
(H-Ks)(F5III) = 0.071 ; smoothed relation from giants in Skiff compendium w/i 15 deg of NGP, 2MASS photometry AAA flags
=> adopt (H-Ks)(F5III) = 0.071 [updated 10/30/2020]

(B-V)(F5III) = 0.401 ; prim. stan. 60 UMa
(B-V)(F5III) = 0.439 ; HIP 55598 F5III 2009ApJS..180..117A
(B-V)(F5III) = 0.457 ; prim. stan. HR 856
(B-V)(F5III) = 0.488 ; HIP 8796 F5III 2009ApJS..180..117A
=> adopt (B-V)(F5III) = 0.44 [updated 10/30/2020]

Mv(F5III) = 1.98 ; HIP 8796 F5III 2009ApJS..180..117A
Mv(F5III) = 1.92 ; HIP 55598 F5III 2009ApJS..180..117A
Mv(F5III) = 1.15 ; prim. stan. HR 856
Mv(F5III) = 1.11 ; prim. stan. 60 UMa
=> adopt Mv(F5III) = 1.2 mag [updated 10/30/2020]

Teff(F5III) = 6460 K ; prim. stan. HR 856
Teff(F5III) = 6830 K ; prim. stan. 60 UMa
=> adopt Teff(F5III) ~ 6600K [updated 10/30/2020]

# No standard

JM53 does not list a F5III standard. 

# Standards

HR 856 = HD 17918 = HIP 13448 (J0253+1629; V=6.3)
 *F5III: MorganAbt72,MK73(dagger),Cowley76(standard),Gray89
  F2III: Harlan69

  Adopt "F5III" from MK73. V=6.30 (HIP), B-V=0.457+-0.006 (HIP),
  V-I=0.53+-0.01(HIP). Plx = 9.33+-0.47 (HIP2).  Teffs: 6535+-80K
  (Casagrande11), 6387K (McDonald12) => adopt Teff=6460K.  logg=3.50
  (Casagrande11). [Fe/H]=0.08 (Casagrande08).  Casagrande11 estimates
  E(B-V)=0.000 and age 1.1 Gyr and mass ~2.0 Msun.  Assuming
  negligible reddening, Mv = 1.15+-0.11 mag.

60 UMa = HR 4480 = HIP 56789
  F5IIIs: Cowley76,Gray01
 *F5III: GrayNstars,GrayCorbally10
  F2: Cannon
  F1III: Oblak81

  Adopt "F5IIIs" from Gray01. V=6.09 (HIP), B-V=0.401+-0.005(HIP),
  V-I=0.47+-0.01(HIP), plx = 10.08+-0.38 mas (HIP2). Bianchi11 reports
  that the maximum Galactic reddening in the direction of 60 UMa is
  E(B-V)=0.018, Casagrande11 lists E(B-V)=0.00. Teff=6829+-80 K
  (Casagrande11), logg=3.56 (Casagrande11), [Fe/H]=0.05
  (Casagrande11). Assuming negligible extinction, Mv = 1.11+-0.08 mag.

# Deprecated standards

alf Tri = HR 544 = HD 11443 (J0153+2934; V=3.4)
  *F6IV: JM53,MK73,Cowley74(stan),Gray01,Gray03
   F7IVab: Barry70(uv metals weak)
   F5III: MK43,Abt09
   F5IV: Roman52(lines weak)
   F6: Fekel03 
 
   Adopt "F6IV" from JM53 and MK73. Listed as F6IV standard by JM53,
   MK73, Morgan71, MorganAbt72, Cowley74, GrayNStars, Houk.

xi Gem = HR 2484 = HD 48737 (J0645+1253; V=3.3)
   *F5IV-V: Gray03
    F5III: MK43
    F5IV: Slettebak55
    F7IV: Cowley76
    F6: Bidelman85
    F4IV: Hendry81

    Adopt "F5IV-V" from Gray03. Was F5III standard of MK43, but little 
    agreement since then. Probably not a good choice of standard. 

bet Del = HR 7882 = HD 196524 
   *F5IV: Slettebak55, Stephenson69, Abt81
    F5III: MK43
    F6III: Cowley69
    F7IV Sr: Cowley76
    F3IV-V: Adams35

    Adopt "F5IV" from multiple references. Was "F5III" standard in
    MK43, but little agreement since then. Probably not a good choice
    of standard.

# Variant 

HR 7495 = HD 186155 (J1940+4531)
  F5II-III: MK78, Gray01, GrayCorbally10
  F5II: Morgan72, MK73
  F5III: Adams35
  F2III: Nassau47
  F2: Cannon 
  Based on MK78 and Gray01, adopt as "F5II-III" standard

48 Gem = HR 2706 (J0712+2408)
  F5III-IV: MK78, Gray01, GrayCorbally10
  F5IV: Morgan72(stan)
  F4III: Wilson50
  F5III: Harlan69
  F4II-III: Bouw81
  F5: Cannon
  Considered "F5IV" standard by Morgan72, but III by everyone else. 
  I'd adopt MK78 and Gray01's "F5III-IV"