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Table 2 Sagittarius stars for alignment check and radiometric calibration

From: Initial products of Akatsuki 1-μm camera

Star Spectral type m v (mag) T e (K) F 0.90 F 0.97 F 1.01
ε Sgr B9.5 III 1.85 9960 180.4 143.7 126.8
λ Sgr K1 + IIIb 2.82 4770 199.4 176.4 164.0
δ Sgr K3 IIIa 2.67 4192 304.4 277.7 262.2
τ Sgr K1 + IIIb 3.31 4459 146.5 131.6 123.3
σ Sgr B2.5 V 2.07 20370 100.4 76.8 66.4
ζ Sgr A2III + A4 IV 2.59 8799 102.4 82.5 73.2
  1. mv is visual magnitude; T e is effective temperature in K; F0.90, F 0.97 and F1.01 are energy fluxes at 0.9, 0.97 and 1.01 μm, respectively, in units of 10−12 mW/cm2/µm