\begin{table}%t2
     \caption{Orbital solution for HD~23642 (over plotted to observed data in
     Fig.~\ref{fig1}).  Formal errors of the solution are given. $\dag$: derived
     from analysis of multi-band photometry and fixed.}\label{tab2}
     %\centering
\par
     \includegraphics[width=6.5cm,clip]{Gb231_t2.ps}
%    \vspace*{-3mm} 
\end{table}