\begin{table}%t5
%%\centering
\par
\caption{Comparison of the angular resolution provided by the optimum ALADDIN baseline length ($4
\le b \le 30$~m) with the characteristic position of the habitable zone of the target systems.
\label{tab:optbase}}
\begin{tabular}[h]{cccc}
\hline \hline      & Optimum  &  Ang. resol.   & Position HZ
\\          & baseline & $(\lambda/2b)$ & $(r_{\rm HZ}/d)$
\\ \hline K0V 5~pc  & 4 m  & 93 mas  & 135 mas
\\        G5V 10~pc & 10 m & 37 mas  & 85 mas
\\        G0V 20~pc & 24 m & 15 mas  & 58 mas
\\        G0V 30~pc & 30 m & 12 mas  & 39 mas
\\ \hline
\end{tabular}
\end{table}