F8V Garrison94 does not list an F8V anchor standard, but MK73 lists HD 27808 as an F8V anchor standard. MK43 standard: 36 UMa - F8V JM53 standards: ups And - F8V bet Vir - F8V MK73 dagger standard: HD 27808 (= vB 48) - F8V MorganAbt73 standard: HD 27808 (= vB 48) - F8V (fundamental standard) Garrison72 standard: ups And - F8V Cowley74 standard: ups And - F8V Cowley76 standard: ups And - F8V MK78 standard: HD 27808 (= Hyades Vb 48) - F8V Keenan85 standard: HD 27808 - F8V Corbally86 standard: Cl Melotte 25 29 (= HD 27383) - F8V Gray89 standard: HD 27808 - F8V GrayAtlas standard: HD 27808 - F8V GrayNstars standard: HD 27808 - F8V Skiff08 flags one star as a F8V MK standard: HD 27808 (MK78). Gray01/03/06 list 50 nearby F8V stars. Median HIP colors: For F8V Hipparcos stars within 75pc, with parallax S/N > 8, and within 1 mag of the MS (N=172): (F8V) = 1.019 (+-0.005 sem, +-0.072 stdev) (F8V) = 1.251 (+-0.006 sem, +-0.093 stdev) (F8V) = 1.329 (+-0.009 sem, +-0.099 stdev) (F8V) = 0.235 (+-0.003 sem, +-0.036 stdev) (F8V) = 0.071 (+-0.003 sem, +-0.028 stdev) (F8V) = 0.581 (+-0.004 sem, +-0.037 stdev) (F8V) =-0.061 (+-0.001 sem, +-0.012 stdev) (F8V) = 1.873 (+-0.010 sem, +-0.125 stdev) (B-V)(F8V) = 0.481 ; BakisEker22 (B-V)(F8V) = 0.549 ; xHIP F8Vs trend for [Fe/H]=0.00 (F8V) = 0.547 ; median B-V for 4 F9V Hyads classified by Morgan65 (see below) (F8V) = 0.544 (+-0.002 sem, +-0.029 stdev); HIP d<75pc S/N>8 (N=172) (B-V)(F8V) = 0.541 ; sec. stan. HD 90839 = 36 UMa ([Fe/H] ~ -0.13) (B-V)(F8V) = 0.540 ; Johnson66 (B-V)(F8V) = 0.54 ; median CATSUP d<30pc sample (N=14) (B-V)(F8V) = 0.536 ; ter. stan. HD 9826 = ups And ([Fe/H] ~ +0.09) (B-V)(F8V) = 0.534 ; exemplar HD 136064 ([Fe/H] ~ -0.025) (B-V)(F8V) = 0.532 ; trend through standards & exemplars (roughly flat w/[Fe/H], for [Fe/H]=0.0) (B-V)(F8V) = 0.530 ; exemplar HD 203454 ([Fe/H] ~ -0.18) (F8V) = 0.530 (+-0.003 sem, +-0.020 stdev); Gray01/03/06 (N=50) (B-V)(F8V) = 0.53 ; Fitzgerald70 (B-V)(F8V) = 0.53 ; Morgan71 (B-V)(F8V) = 0.53 ; JohnsonMorgan53 (B-V)(F8V) = 0.527 ; exemplar HD 221356 ([Fe/H] ~ -0.25) (B-V)(F8V) = 0.524 ; exemplar HD 95456 ([Fe/H] ~ +0.16) (F8V) = 0.52 ; MorganAbt73/TableIII (B-V)(F8V) = 0.52 ; Schmidt-Kaler82, KenyonHartmann95 (B-V)(F8V) = 0.518 ; prim. stan. HD 27808 ([Fe/H] ~ +0.11) (B-V)(F8V) = 0.516 ; median SIMBAD F8V d<25pc (N=14) => adopt (B-V)(F8V) = 0.530 *** [last updated 10/24/2020, still consistent w/JohnsonMorgan53!] => adopt (U-B)(F8V) = 0.001 => adopt (V-I)(F8V) = 0.599 => adopt (V-R)(F8V) = 0.300 => adopt (R-I)(F8V) = 0.298 => adopt (V-J)(F8V) = 1.004 => adopt (V-H)(F8V) = 1.229 => adopt (V-Ks)(F8V) = 1.290 => adopt (H-Ks)(F8V) = 0.061 => adopt (J-H)(F8V) = 0.225 (G-V)(F8V) = -0.16778 ; HD_45067_ F8V_ (G-V)(F8V) = -0.16361 ; HD_84117_ F8V_ (G-V)(F8V) = -0.159 ; HD_105330_ F8V_ (G-V)(F8V) = -0.15835 ; HD_213429_ F8V_ (G-V)(F8V) = -0.1572 ; HD_28394_ F8V B-V=0.501, Gmag=6.8818 (G-V)(F8V) = -0.1564 ; HD_28033_ F8V B-V=0.538, Gmag=7.2236 (G-V)(F8V) = -0.1514 ; HD_26784_ F8V B-V=0.511, Gmag=6.9656 (G-V)(F8V) = -0.150 ; trend for screened late F dwarfs for B-V=0.53 (see 10/24/2020 notes in F5V.txt) (G-V)(F8V) = -0.1498 ; HD_5015_ F8V (G-V)(F8V) = -0.1450 ; HD_27808_ F8V B-V=0.520, Gmag=6.9900 (G-V)(F8V) = -0.141 ; HD_209635_ F8V_ (G-V)(F8V) = -0.141 ; HD_108147_ F8V_CH+0.4 (G-V)(F8V) = -0.1401 ; HD_221356_ F8V_ (G-V)(F8V) = -0.14 ; HD_129060_ F8V_ (G-V)(F8V) = -0.136 ; Gray01/03/06 F dwarf sequence for B-V=0.530 (G-V)(F8V) = -0.13541 ; HD_119124_ F8V_ (G-V)(F8V) = -0.135 ; HD_27808_ F8V (G-V)(F8V) = -0.13396 ; HD_128582_ F8V_ (G-V)(F8V) = -0.13248 ; HD_162826_ F8V (G-V)(F8V) = -0.1312 ; HD_82241_ F8V_Fe-0.4 B-V=0.502, Gmag=6.8478 (G-V)(F8V) = -0.13077 ; HD_91889_ F8V_ (G-V)(F8V) = -0.127 ; HD_216402_ F8V_ (G-V)(F8V) = -0.125 ; HD_28394_ F8V (G-V)(F8V) = -0.12481 ; HD_16673_ F8V_ (G-V)(F8V) = -0.12335 ; HD_32820_ F8V_ (G-V)(F8V) = -0.12333 ; HD_196885_ F8V (G-V)(F8V) = -0.122 ; HD_124694_ F8V_ (G-V)(F8V) = -0.12107 ; HD_101805_ F8V_ (G-V)(F8V) = -0.12034 ; HD_143306_ F8V_ (G-V)(F8V) = -0.11985 ; HD_95456_ F8V_ (G-V)(F8V) = -0.11929 ; HD_100219_ F8V_ (G-V)(F8V) = -0.114 ; HD_26784_ F8V (G-V)(F8V) = -0.11262 ; HD_9826_ F8V (G-V)(F8V) = -0.11 ; HD_28033_ F8V => adopt (G-V)(F8V) = -0.15 [updated 10/30/2020] (Bp-Rp)(F8V) = 0.6802 ; HD_27808 (Bp-Rp)(F8V) = 0.6810 ; phi02_Cet (Bp-Rp)(F8V) = 0.6825 ; HD_95456 (Bp-Rp)(F8V) = 0.6827 ; HD_136064 (Bp-Rp)(F9V) = 0.694 ; color trend for B-V=0.53 (Bp-Rp)(F8V) = 0.6974 ; 36_UMa (Bp-Rp)(F8V) = 0.70 ; Bp-G=0.31, G-Rp=0.39 (Bp-Rp)(F8V) = 0.7019 ; 17_Crt_B (Bp-Rp)(F8V) = 0.7051 ; 17_Crt_A (Bp-Rp)(F8V) = 0.7056 ; ups_And (Bp-Rp)(F8V) = 0.7167 ; HD_221356 (Bp-Rp)(F8V) = 0.737 ; Evans18 trend for V-I= 0.599 (Bp-Rp)(F8V) = 0.7516 ; HD_203454 => adopt (Bp-Rp)(F8V) = 0.70 [updated 11/22/2020] (Bp-G)(F8V) = 0.2850 ; HD_27808 (Bp-G)(F8V) = 0.2930 ; HD_95456 (Bp-G)(F8V) = 0.3028 ; HD_221356 (Bp-G)(F8V) = 0.3053 ; 17_Crt_B (Bp-G)(F8V) = 0.3091 ; 17_Crt_A (Bp-G)(F8V) = 0.31 ; Bp-Rp=0.70, G-Rp=0.39 (Bp-G)(F9V) = 0.311 ; color trend for B-V=0.53 (Bp-G)(F8V) = 0.3157 ; HD_203454 (Bp-G)(F8V) = 0.3170 ; phi02_Cet (Bp-G)(F8V) = 0.3317 ; 36_UMa (Bp-G)(F8V) = 0.3318 ; HD_136064 (Bp-G)(F8V) = 0.3553 ; ups_And => adopt (Bp-G)(F8V) = 0.31 [updated 11/22/2020] (G-Rp)(F8V) = 0.3503 ; ups_And (G-Rp)(F8V) = 0.3509 ; HD_136064 (G-Rp)(F8V) = 0.3640 ; phi02_Cet (G-Rp)(F8V) = 0.3657 ; 36_UMa (G-Rp)(F8V) = 0.385 ; color trend for B-V=0.53 (G-Rp)(F8V) = 0.3895 ; HD_95456 (G-Rp)(F8V) = 0.39 ; Bp-Rp=0.70, Bp-G=0.31 (G-Rp)(F8V) = 0.3952 ; HD_27808 (G-Rp)(F8V) = 0.3960 ; 17_Crt_A (G-Rp)(F8V) = 0.3966 ; 17_Crt_B (G-Rp)(F8V) = 0.4139 ; HD_221356 (G-Rp)(F8V) = 0.4358 ; HD_203454 => adopt (G-Rp)(F8V) = 0.39 [updated 11/22/2020] (Ks-W1)(F8V) = 0.056 ; EEM trend for d<30pc for B-V=0.53 => adopt (Ks-W1)(F8V) = 0.056 [updated 12/29/2019] (U-B)(F8V) = 0.06 ; Johnson66 [big discrepency!] (U-B)(F8V) = 0.02 ; JohnsonMorgan53 (U-B)(F8V) = 0.02 ; Fitzgerald70 (U-B)(F8V) = 0.010 ; HIP d<75pc S/N>8 F8V N=115 (Mermilliod91 photometry) (F8V> = 0.601 (+-0.004 sem, +-0.028 stdev) ; Gray01/03/06 N=50) (F8V) = 0.617 (+-0.004 sem, +-0.033 stdev) ; HIP d<75pc S/N>8 (N=172) (V-K)(F8V) = 1.264 +- 0.021 ; pri. stan. HD 27808 (g-r)(F8V) = 0.374 ; Jordi06 (V-R)=>(g-r) for V-R=0.300 (g-r)(F8V) = 0.36 ; Covey07 (g-r)(F8V) = 0.344 ; Bilir05 (B-V)=>(g-r) for B-V=0.530 => adopt (g-r)(F8V) = 0.36 [updated 10/10/2020] Teff(F8V) = 6070 K ; exemplar HD 203454 ([Fe/H] ~ -0.18) Teff(F8V) = 6096 K ; exemplar HD 221356 ([Fe/H] ~ -0.25) Teff(F8V) = 6112 K ; B-V=0.530 => Teff(Ramirez05) Teff(F8V) = 6122 K ; B-V=0.530 => Teff(Napitwotzski93) Teff(F8V) = 6126 K ; mean photometric Teff Teff(F8V) = 6149 K ; B-V=0.530 => Teff(Casagrande10) Teff(F8V) = 6155 K ; ter. stan. HD 9826 = ups And ([Fe/H] ~ +0.09) Teff(F8V) = 6158 K ; Teff from smoothed SpT(Teff) trend Teff(F8V) = 6161 K ; Boyajian12 Teff(F8V) = 6161 K ; sec. stan. 36 UMa ([Fe/H] ~ -0.13) Teff(F8V) = 6164 K ; exemplar HD 136064 ([Fe/H] ~ -0.025) Teff(F8V) = 6168 K ; Teff for d<30pc [Fe/H]=+-0.1 dex dwarfs from Hinkel17 for B-V=0.53 Teff(F8V) = 6170 K ; GrayCorbally09 Teff(F8V) = 6174 K ; median of 874 published Teffs for F8V stars Teff(F8V) = 6180 K ; GrayCorbally94 Teff(F8V) = 6181 K ; Gray03/06 F8Vs median from TIC9/Stassun19 (N=26) Teff(F8V) = 6180 K ; trend for standards & exemplars interp to [Fe/H]=0.0 Teff(F8V) = 6200 K ; Schmidt-Kaler82 Teff(F8V) = 6206 +- 81 K ; vanBelle09 Teff(F8V) = 6250 K ; pri. stan HD 27808 ([Fe/H] ~ +0.11) Teff(F8V) = 6267 K ; exemplar HD 95456 ([Fe/H] ~ +0.16) Teff(F8V) = 6268 K ; B-V=0.530 => Teff(Bessell98,logg=4.5) => adopt Teff(F8V) = 6180 K (logT = 3.791) [last updated 10/25/2020] BCv(F8V) = +0.001 mag ; Balona94(Teff=6170K) BCv(F8V) = -0.002 mag ; Bertone04(ATLAS,Teff=6170K) BCv(F8V) = -0.028 mag ; Flower96(Teff=6170K) BCv(F8V) = -0.030 mag ; Schmidt-Kaler82(BCv=-0.16 + 0.13 offset) BCv(F8V) = -0.039 mag ; Masana06(Teff=6170K) BCv(F8V) = -0.043 mag ; Casagrande18(Teff=6170K,logg=4.5) BCv(F8V) = -0.044 mag ; Bessell98(ATLAS9,logg=4.5,Teff=6170K) BCv(F8V) = -0.047 mag ; EEM fit to Casagrande06/08/10(Teff=6170K) BCv(F8V) = -0.050 mag ; Code76(Teff=6170K) => adopt BCv(F8V) = -0.04 mag [last updated 8/31/2019; adjusted so that BCv(5772K)=-0.085] Mv(F8V) = 3.13 mag ; exemplar HD 136064 Mv(F8V) = 3.45 mag ; Wegner07 Mv(F8V) = 3.45 mag ; ter. standard HD 9826 = ups And (slightly evolved logg ~ 4.16) Mv(F8V) = 3.58 mag ; exemplar HD 95456 Mv(F8V) = 3.84 mag ; median SIMBAD F8V d<25pc (N=14) Mv(F8V) = 3.94 mag ; F dwarf trend standards/exemplars Mv(F8V) = 3.98 mag ; d<60pc SIMBAD F8V (N=143) Mv(F8V) = 4.0 mag ; Schmidt-Kaler82 Mv(F8V) = 4.0 mag ; GrayCorbally09 Mv(F8V) = 4.01 mag ; linear fit to Gray01/03/06 dwarf sequence (d<50pc) for B-V=0.53 Mv(F8V) = 4.01 mag ; B-V=0.530 => Mv(Wright05) Mv(F8V) = 4.02 mag ; Gray01/03/06 dwarfs, xHIP B-V/Mv, Gaspar16 |[Fe/H]|<0.05 "solar": fit for B-V=0.53 Mv(F8V) = 4.07 mag ; xHIP |[Fe/H]|<0.2 dex d<25pc dwarf only for B-V=0.53 Mv(F8V) = 4.07 mag ; pri. stan. HD 27808 Mv(F8V) = 4.09 mag ; B-V=0.530 => EEM fit to SIMBAD dwarfs d<25pc Mv(F8V) = 4.23 mag ; exemplar HD 203454 Mv(F8V) = 4.29 mag ; sec. stan. HD 90839 = 36 UMa Mv(F8V) = 4.42 mag ; exemplar HD 221356 => adopt Mv(F8V) = 4.05 mag [updated 10/30/2020] => adopt M_G(F8V) = 3.90 mag [updated 12/10/2020] (Mv=4.05, G-V=-0.15) => adopt M_Ks(F8V) = 2.76 mag [updated 12/30/2020] (Mv=4.05, V-Ks=1.29) logL(F8V) = 0.292 dex ; Mv=4.05, BCv=-0.04 => Mbol = 4.01 => adopt logL(F8V) = 0.292 dex [updated 9/26/2020] => adopt Mbol(F8V) = 4.010 mag [updated 9/26/2020] Rad(F8V) = 1.288 Rsun ; Stassun/TICv8 Rads for smoothed trend for Gray03/06 FVs (Teff=6170K) Rad(F8V) = 1.282 Rsun ; Gray03/06 F8Vs median from TIC9/Stassun19 (N=26) Rad(F8V) = 1.2209 Rsun ; Teff=6180K, logL=0.292 => adopt Rad(F8V) = 1.221 Rsun [updated 10/30/2020] Mass(F8V) = 1.26 Msun ; pri. stan. HD 27808 (Hyad; Goldman13) Mass(F8V) = 1.256 Msun ; EEM Teff vs. Mass fit for binaries (Teff=6170K) Mass(F8V) = 1.223 Msun ; HenryMcCarthy93 calibration for Mv=4.0 Mass(F8V) = 1.178 Msun ; EEM logL vs. Mass fit for binaries (logL=0.312) Mass(F8V) = 1.174 Msun ; Ekers18 ML calibration for logL=0.312 Mass(F8V) = 1.156 Msun ; EEM Mv vs. Mass fit for binaries (Mv=4.0) Mass(F8V) = 1.136 Msun ; Bertelli09 solar tracks for Teff=6170K,logL=0.312 Mass(F8V) = 1.119 Msun ; sec. stan. 36 UMa (Boyajian12) Mass(F8V) = 1.11 Msun ; sec. stan. 36 UMa (Ramirez12) => adopt Mass(F8V) = 1.18 Msun [updated 12/29/2019] # No Standard Morgan65 does not list an F8V standard. Houk75 does not list a F8V standard (she reclassifies the JM53 F8V standard Beta Vir as a F9V). # Primary Standard HD 27808 = HIP 20557 = Cl Melotte 25 48 (only "+" in Skiff catalog) *F8V: MK73,MorganAbt73,MK78,Jaschek78,Keenan85,Garcia89,Gray89(stan),Gray01,GrayNstars,GrayAtlas B-V(HIP)=0.518, Mv=4.07, dMv=+0.14, par=24.5+-1.4 mas. There is solid agreement between Morgan, Keenan, and Gray that this is an F8V. V = 7.135+-0.005 (Mermilliod91), J = 6.148+-0.023, H = 5.946+-0.026, Ks = 5.871+-0.020 (2MASS), V-Ks = 1.264 +- 0.021. Mass = 1.26 Msun (Goldman13). PASTEL compendium: median Teff ~ 6250K, median [Fe/H] ~ +0.11, appropriate for Hyades member. # Secondary Standard HD 90839 = 36 UMa = HR 4112 = HIP 51459 = GJ 395 (J1030+5558; V=4.82) F5: Cannon F6V: Morgan38,Moore50 *F8V: Adams35,MK43(stan),JM53,Jaschek64(all; 23 refs),Cowley76,Bidelman85(F8),Gray03 Not a standard in Garcia89, but it is a standard in MK43. Binary w/K7V companion 122.8" away. Excellent agreement on F8V since ~1950, presumably due to appearance in MK43 & JM53, but Gray03 still agrees with F8V. V=4.82(HIP), B-V=0.541+-0.008(HIP), V-Ic=0.58+-0.01(HIP), plx=78.25+-0.28mas(HIP2), PASTEL catalog: =6161K(N=20), =4.40(N=17), <[Fe/H]>=-0.13(N=17). Mv=4.29(HIP,HIP2). Mass = 1.119+-0.035Msun(Boyajian12), Mass=1.11+-0.02(Ramirez12), age=1.5+-1.4Gyr(Boyajian12). # Tertiary Standard HD 9826 = ups And = 50 And = HR 458 = HIP 7513 = GJ 61 *F8V: JM53(stan),Morgan53,Garrison72(stan),Cowley74(stan),Bidelman85(F8),Hoffleit91,Gray01 F8IV: MK43(stan) F9V: Barry70(F9Va),Abt09 G0V: Adams35 Reasonable continuity from JohnsonMorgan53 to Gray01, although a couple F9V classifications, and the gravity seems slightly evolved (logg~4.16). Famous exoplanet host star and naked eye star. B-V=0.536+-0.007(HIP), B-V=0.536+-0.007(Mermilliod91), V=4.10(HIP,TYC), V=4.091+-0.010(Mermilliod91), U-B=0.060+-0.000(Mermilliod91), V-I=0.58+-0.03(HIP). PASTEL: =6155K(N=42), <[Fe/H]>=+0.09(N=32), =4.155(N=31). plx=74.12+-0.19mas(HIP2), plx=74.5711+-0.3491mas(GaiaDR2). Mv = 3.45+-0.01(HIP,HIP2), dMv=-0.59. # Deprecated Standards HD 102870 = bet Vir = HR 4540 = HIP 57757 *F9V: Garrison72(stan),MK73(dagger),MorganAbt73,Cowley76(stan),HoukStandard,Garcia89,Kennedy83,Houk99 F8V: Morgan53,MK43 F8IV-V: Gray01 It appears to be much bluer than other F9Vs in Houk (although late Fs & Gs may be off in Houk). Basically F9V from MK73 onward (until Gray01). B-V(HIP)=0.518, Vmag=3.59, Mv=3.40, dMv=-0.53, par=91.7+-0.9 mas Teff = 6059+-49 K (North09). I would feel better about its status as a standard if Gray01's value agreed with others, and Morgan hadn't shifted it (F8V in MK43 & Morgan53 vs. F9V in MK73). HD 27383 = 55 Tau = HIP 20215 = Cl Melotte 25 29 (Hyad) *F9V: MK73(dagger),MorganAbt73,Jaschek74,Jaschek78,Abt85,Garcia89,Gray89 F8V: Corbally86(stan),Gray01 This star was "the" F9V standard in Gray89, but it was called "F8V" in Gray01. It appears to be much bluer than other F9Vs. B-V(HIP)=0.509, Vmag=6.85, Mv=3.68, dMv=-0.18, par=23.3+-2.3 mas # Exemplars HD 221356 = HR 8931 *F8V: Adams35,Harlan74,Malaroda75,Cowley79,Gray03 All 5 classifications in Skiff MK compendium are F8V, including modern classification with CCD spectra by Gray03. V=6.496+-0.009(Mermilliod91), B-V=0.527+-0.009(Mermilliod91), U-B=-0.026+-0.020(Mermilliod91). PASTEL catalog has 8 Teffs, with median published Teff = 6096K. Unfortunately the star is metal poor, median [Fe/H] ~ -0.25. Mv=4.42(HIP,HIP2). HD 95456 = HR 4298 *F8V: Malaroda75,Houk82,Gray06 G0V: Evans57 PASTEL compendium: median Teff = 6267K (N=5), median [Fe/H] = +0.16 (N=3), so slightly metal rich. B-V=0.524+-0.008(Mermilliod91), V=6.059+-0.006(Mermilliod91), U-B=0.032+-0.069(Mermilliod91). Mv=3.58(HIP,HIP2). HD 136064 = HR 5691 = BD+67 876 *F8V: 1930MeUpp..48....1O,Roman52,Roman55,Ljunggren61(F8),Gray03 F9IVb: Barry70 F9IV/V: Adams35 V=5.15(HIP), V=5.138+-0.016(Mermilliod91), B-V=0.550+-0.004(HIP), B-V=0.534+-0.006(Mermilliod91), U-B=0.069+-0.021(Mermilliod91), PASTEL: = 6164K(N=7), logg=4.045(N=6), [Fe/H]=-0.025(N=6). Mv=3.13(HIP,HIP2). HD 203454 = HR 8170 = HIP 105406 (Ursa Major member) *F8V: Roman49,Harlan74,Levato78,Gray03,Abt09 F9V: Cowley76(many weak metal lines) Slightly metal-poor exemplar with 5 F8V classifications spanning over 6 decades. plx = 37.1296+-0.0321 mas(GaiaDR2). Teffs: 5813K(Masana06), 5874K(Guillout09), 5943K(Casagrande11), 5959K(Bermejo13), 5974K(Bermejo13#2), 6050K(Frasca13), 6051K(Gray03), 6070K(Hinkel17), 6146K(Boesgaard88), 6146K(Boesgaard90), 6170K(Suchkov05), 6185K(Katz11), 6300K(Boesgaard89) => = 6051K. PASTEL: [Fe/H]=-0.18(N=3), logg=4.5(N=1). 3 spectroscopic estimates are from Boesgaard(1988,1989,1990). Some other modern estimates agree that star is somewhat metal poor [Fe/H] ~ -0.2. Frasca18 measures vsini of ~20 km/s (4 estimates ebtween 17.2 and 21.6) km/s. Makarov05 flags it as a proper motion derivative binary. Tokovinin14 lists 3 components with masses 1.81, 1.17, 0.64 Msun, but system is not in WDS. V=6.39(HIP), B-V=0.533+-0.010(HIP), (B-V)=0.530+-0.005(Mermilliod91), U-B = -0.014+-0.011(Mermilliod91), V=6.397+-0.011(Mermilliod91). Mv=4.23(HIP,HIP2). HD 4676 = 64 Psc = HR 225 F6V: Adams35,Opolski57 F7V: Cowley76 F8III: Cucchiaro78 *F8V: Roman52(lines strong),Gray03,Abt08 HD 35296 = HR 1780 = 111 Tau *F8V: 1927MeUpp..28....1L(F8),Adams35,Roman52(lines strong),Gray03 G1: Bidelman85 Skiff: CPM with HD 35171. # Other Stars HD 4813 = HR 235 = phi02 Cet F7IV-V: Malaroda75 F7V: Gray03 F8IV: Roman49 *F8V: Roman50,Cowley69,Levato78,Bidelman85(F8) hF8gF7mF7: Jaschek89 F9V: Adams35,Gray89 Ursa Major stream? King03 has in list of "possible activity-based members" of UMa. Oddly Gray89 has F9V but Gray03 has F7V. HD 100287 = HR 4444 = 17 Crt A F3/5: Houk82 F6V: Adams35 *F8V: Slettebak55(F8),Malaroda75,Abt81,Corbally84,Gray01 F8IV-V: Gray06 9" common proper motion pair with HD 100286 = HR 4443 = 17 Crt B. HD 100286 = HR 4443 = 17 Crt B F3/5: Houk82 F7V: Adams35 *F8V: Abt81,Corbally84,Gray01 F9V: Gray06 G0: Slettebak55 HD 107213 = HR 4688 = Cl Melotte 111 66 = HIP 60098 F5: 1953UppAn...3j...1W F7V: Appenzeller76 F8: 1927MeUpp..28....1L,1934StoAn..11l...1L,1952AN....280..121S,Upgren63 *F8IV-V: Gray01 F8V: Harlan70,Barry70(F8Va),Hill76,Cowley79,Grenier99 F8IV/V: Adams35,Clausen79 F9V: Cowley76 Good agreement on F8 type. Numbered as a member of Coma cluster, but proper motion is way too large and distance too close (plx = 20.9477+-0.046 mas ; Gaia DR2). PASTEL: = 6300K (N=17), logg= 4.1 (N=9), [Fe/H] = +0.19(N=9). Note that it is ~1.26 mag above main sequence, so slightly metal rich and perhaps slightly evolved. Most isochronal estimates are around 2 Gyr, but fairly massive (~1.5 Msun). V=6.38(HIP), B-V=0.523+-0.006(HIP), V-I = 0.60+-0.01(HIP). HD 693 = HR 33 F8V: Cowley76, Gray89 *F8V Fe-0.8 CH-0.5: Gray06 HD 108102 = Cl Melotte 111 111 = IL Com = HIP 60582 F5: 1953UppAn...3j...1W F7Vn: Stocke91 *F8V:1938LicOB..18..167T,1952ApJ...116..612W(F8+V,SB2),1956JO.....39...53D,1963BOTT....3..137M,Abt77 F9V: Clausen79 Known RS CVn or CAB system (2004Ap.....47..443A). HD 119124 = HR 5148 F7V: Cowley79 *F8V: Bakos74,Abt81,Gray03 F9V: Adams35,Cowley76 HD 134044 = HR 5630 F7V: Wilson50 *F8V: Cowley76,Cowley69,Harlan81 HD 139460 = HR 5815 F6V: Adams53,Struve52,Malaroda75(F6IV-V) *F7V: Slettebak63,Gray03 F8V: 1923LicOB..10..169L(F8),Harlan74,Cowley76,Abt81 Part of 12" pair with another mid-F star of similar brightness (HD 139461 = HR 5816). HD 30810 F7V: Adams35(close pair) *F8V: 1940ApJ....91..256T,Treanor60,Christy69,Stocke91 F9V: Abt08 HD 143333 = HR 5954 F7V: Adams35(F7IV/V),Gray06 *F8V: Roman55,Cowley67,Malaroda75,Abt09 F9V: Cowley76 Morgan65 classified 4 F8V Hyads: HD 27383, 28033, 28034, 28205. They have B-V colors of 0.509, 0.557, 0.560, 0.537, respectively, and their median B-V color is (F8V,Hyad) = 0.547. Among Gray03 and Gray06, there are 29 pure "F8V"s. Ones with the most F8V classifications include HD 203454 (see above). ### xHIP d<25pc F8V with modern classification (since 2000) HIP plx eplx SpT [Fe/H] e B-V eB-V ref 2762 47.05 0.67 F8V 0.01 9.99 0.567 0.008 2009ApJS..180..117A 3810 42.64 0.27 F8V -0.02 0.08 0.502 0.004 2009ApJS..180..117A 12653 58.25 0.22 F8V 0.15 0.01 0.561 0.007 2006A&A...460..695T 19335 47.63 0.26 F8V 0.14 9.99 0.520 0.005 2003AJ....126.2048G 25278 69.51 0.38 F8V -0.01 9.99 0.544 0.004 2003AJ....126.2048G 47592 66.61 0.21 F8V -0.08 0.01 0.534 0.004 2006AJ....132..161G 51459 78.25 0.28 F8V -0.11 0.01 0.541 0.008 2003AJ....126.2048G 82860 65.54 0.33 F8V -0.12 9.99 0.481 0.007 2009ApJS..180..117A 86620 43.36 0.51 F8V -0.04 0.02 0.530 0.000 2001AJ....121.2148G 97675 52.11 0.29 F8V 0.09 0.01 0.563 0.003 2001AJ....121.2148G 114924 48.77 0.26 F8V 0.04 0.01 0.556 0.003 2001AJ....121.2148G for -0.1 < [Fe/H] < 0.1: (B-V) = 0.5487 + 0.2086*[Fe/H] (rms=0.010mag)