\begin{table}%t2
\caption{Characteristics of the stars that were used as calibration stars
for our VLTI/VINCI observations of $\gamma$~Sagittae. Listed are the spectral 
type, the $K$-band magnitude, the uniform-disc diameter and its error, and
the effective temperature, all from Bord\'e et~al. (\cite{borde02}; based
on Cohen et~al. \cite{cohen99}).}
\label{tab:calibrators}
%\centering
\small
\begin{tabular}{llrlll}
\hline\hline
Star & Sp. type & $K$ & $\Theta_{\rm UD}$ & $\sigma(\Theta)$ & 
$T_{\rm eff}$ \\\hline
\object{56 Aql}         & K5 III    &  1.76 & 2.45 & 0.028 & 4046 \\
\object{31 Ori}         & K5 III    &  0.90 & 3.56 & 0.057 & 4046 \\
\object{58 Hya}         & K2.5 IIIb &  1.13 & 3.13 & 0.035 & 4318 \\
\object{66 Aql}         & K5 III    &  1.76 & 2.37 & 0.030 & 4046 \\
\object{70 Aql}         & K5 II     &  1.21 & 3.18 & 0.037 & 4064 \\
\object{$\theta$ Cen}   & K0-IIIb  & --0.26 & 5.32 & 0.058 & 4656 \\
\object{$\phi^1$ Aqr}   & K1-III   &  1.79 & 2.18 & 0.025 & 4508 \\
\object{$\lambda$ Gru}  & K3 III    &  1.44 & 2.64 & 0.030 & 4256 \\
\object{$\lambda$ Sgr}  & K1 IIIb   &  0.40 & 4.13 & 0.047 & 4508 \\
\object{$\pi^2$ Ori}    & K0 IIIb   &  1.69 & 2.14 & 0.023 & 4656 \\
\object{$\chi$ Phe}     & K5 III    &  1.52 & 2.69 & 0.032 & 4046 \\\hline
\end{tabular}
\end{table}