\begin{table}%t3
\caption {\label{tab_pm}Proper motion and parallax solutions for objects~A and~B.}
%\centerline
 {       
\begin{tabular}{c r r r}          %  columns (7 columns)
\hline\hline
Solution  & $\mu_{\alpha}\cos{\delta}$ & $\mu_{\delta}$ & $\pi_{\rm rel}$ \\
     & mas/yr & mas/yr & mas \\
\hline
1-A  &  $-$488.1~$\pm$~87.8  & $+$381.3~$\pm$~49.4  & \\
1-B  &  $-$378.6~$\pm$~83.3 & $+$323.5~$\pm$~45.7   & \\
2-A  &  $+$123.9~$\pm$~10.1  & $+$132.7~$\pm$~28.3   & \\
2-B  &  $+$138.3~$\pm$~05.8   & $+$126.7~$\pm$~25.4   & \\
3-A  &   $+$86.8~$\pm$~02.1   & $+$139.1~$\pm$~00.9    & \\
{\bf 4-A}  & {\bf  $+$86.2~$\pm$~02.6}  &{\bf $+$138.8~$\pm$~02.6}   & {\bf 127.0~$\pm$~27.0} \\
5-A  &                     &                     &  153.7~$\pm$~20.5  \\
5-B  &                     &                     &  104.4~$\pm$~45.5  \\
\hline
\end{tabular}}
\par
\smallskip
\par
 \tablefoot {
Linear fit using UKIDSS (1),
UKIDSS$+$SDSS (2), 
all data for A~(3).
Combined proper motion and parallax solution for A (4).
Parallax solution using UKIDSS$+$SDSS and the previously
determined linear proper motion of object A as input~(5).
}
\end{table}