Table 2: Calibrators with spectral type, K magnitude, limb-darkened disk (LD) angular diameter in K band (in milliarcsec) and baseline (Mérand et al. 2005; Bordé et al. 2002).
  S. type K mag LD diam. (mas) Baseline
HD 159501 K1 III 3.14 $1.200 \pm 0.014$ E2-W2
HD 163770 K1 IIa 1.03 $3.150 \pm 0.034$ S1-S2
HD 165683 K0 III 2.9 $1.152 \pm 0.014$ E2-W2
HD 168775 K2 IIIab 1.74 $2.280 \pm 0.025$ S1-S2
HD 173780 K2 III 2.0 $1.950 \pm 0.021$ E2-W2
HD 176527 K2 III 2.04 $1.765 \pm 0.024$ E2-W2
HD 176670 K2.5 III 1.6 $2.410 \pm 0.026$ S1-S2

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