\begin{table}%A.3
%\centering
\par
   \caption{Relative astrometry of \object{HD 109749}.
     \label{t:astrometry}}
\par
       \begin{tabular}{lccl}
         \hline\hline
         \noalign{\smallskip}
         Epoch  &  $\rho$ &  $\theta$  & Ref. \\
         \noalign{\smallskip}
         \hline
         \noalign{\smallskip}
\par
  1881    &    8.2                &    179             & CCDM \\
  1987.35 &    $8.35\pm0.04 $     &    $179.76\pm0.21$ & Sinachopoulos (\cite{sinach}) \\ 
  1991.25 &    $8.353\pm0.014$    &    180.0           & Hipparcos \\
  1999.27 &    8.28               &    179.75          & 2MASS \\
         \hline
      \end{tabular}
\par
\end{table}