AA1III HR 2925 is probably the best A1III standard (southernly accessible as well). GrayGarrison87 standard: HR 2925 (=HD 61031) - A1III(low vsini) gam Tra (=HD 135382) - A1III(high vsini) (J-H)(A1III) = 0.025 ; smoothed relation from giants in Skiff compnedium w/i 15 deg of NGP, 2MASS photometry AAA flags => adopt (J-H)(A1III) = 0.025 [updated 10/30/2020] (H-Ks)(A1III) = 0.018 ; smoothed relation from giants in Skiff compnedium w/i 15 deg of NGP, 2MASS photometry AAA flags => adopt (H-Ks)(A1III) = 0.018 [updated 10/30/2020] (B-V)(A1III) = 0.011 ; HIP 111188 A1III 1995ApJS...99..135A (B-V)(A1III) = 0.070 ; HIP 45238 A1III- 2006AJ....132..161G => adopt (B-V)(A1III) = 0.04 [updated 10/30/2020] Mv(A1III) = 1.08 ; HIP 111188 A1III 1995ApJS...99..135A Mv(A1III) = -1.03 ; HIP 45238 A1III- 2006AJ....132..161G # No standards MK43, JM53, Cowley69, and Houk do not list an A1III standard. # Primary standards HR 2925 = HD 61031 (J0734-5128; V=6.2) *A1III: GrayGarrison87(low vsini stan.) A1III/IV: Houk78 A0: Cannon Revised Hipparcos parallax 2.19+-0.25 mas. Approximate Mv ~ -2.0, 3.5 magnitudes above the main sequence. SMARTS 1.5-m spectra in hand (26Ia blue, 47Ib red). gam Tra = HR 5671 = HD 135382 = HIP 74946 (J1518-6840; V=2.8) *A1IIIn: GrayGarrison87(high vsini stan.) A2Vn: Abt95 A0IV: Houk75(Garrison & Hagen type) A1V: deVaucouleurs57,Levato72 A3VnpEu: Buscombe69 Revised Hipparcos parallax = 17.74+-0.12 mas; estimate Mv = -0.86, 2.08 mag above main sequence, so indeed evolved.