\begin{table}%tA.1
   \caption{Stellar properties of \object{HD 20782} and \object{HD 20781}.
     \label{t:hd20782}}
\par
%\centerline
 {       \begin{tabular}{lccc}
         \hline\hline
         \noalign{\smallskip}
         Parameter   &  HD 20782 &  HD 20781  & Ref. \\
         \noalign{\smallskip}
         \hline
         \noalign{\smallskip}
$\mu_{\alpha}$ (mas/yr)  & $348.88\pm0.50$    & $ 349.07\pm0.78$     & 1 \\
$\mu_{\delta}$ (mas/yr)  & $-64.82\pm0.73$    & $-67.80 \pm1.00$     & 1 \\
{\it RV}     (km~s$^{-1}$)            &  $ 39.5\pm0.2 $    &  $39.6 \pm 0.2$      & 2 \\ 
$\pi$  (mas)             &  $27.76\pm0.88$    &  $27.86\pm1.23$      & 1 \\
$R_{\rm min}$ (kpc)          & \multicolumn{2}{c}{4.95}                  & 2 \\
$R_{\rm max}$ (kpc)          & \multicolumn{2}{c}{8.16}                  & 2 \\
$ecc $                   & \multicolumn{2}{c}{0.24}                  & 2 \\
$z_{\rm max}$ (kpc)          & \multicolumn{2}{c}{0.08}                  & 2 \\
$V$                        &  7.366             &  8.457               & 2 \\
ST                       & G3V                & K0V                  &  1  \\
${\rm Mass} (M_{\odot})$ &  0.90           &  0.84                   &  2 \\
                         &  1.00           &                         &  3 \\
                         & $0.969^{+0.024}_{-0.022}$     &             &  4 \\
Age$_{\rm isoc}$  (Gyr)      &  13.0                       &             &  2  \\
                         &$7.1^{+1.9}_{-4.1}$ &                      &  3  \\
                         &$9.68\pm1.76$       &                      &  4  \\
Age$_{HK}$  (Gyr)        &   3--6            & 6                      &  5, 6 \\
         \noalign{\smallskip}
         \hline
      \end{tabular}}
\par
\smallskip
References: 1. Hipparcos (ESA \cite{hipparcos});
            2.~Nordstrom et~al.~(\cite{nordstrom04});
            3.~Valenti \& Fischer (\cite{vf05});  
            4.~Takeda et~al.~(\cite{takeda06});
            5.~Jones et~al.~(\cite{jones06});
            6.~Gray et~al.~(\cite{gray06}).
\end{table}