\begin{table}%t3
%\centering
\par
\caption{Proper motion of \sori.
\label{pm}}
\begin{tabular}{lcc}
\hline\hline
Telescope  & $\mu_{\alpha} \rm{cos}~\delta $ & $\mu_\delta$  \\
           & (mas~yr$^{-1}$)               & (mas~yr$^{-1}$)\\
\hline
3.5 m CAHA & $+$9.9~$\pm$~2.6            & $+$6.0~$\pm$~5.6 \\
Keck~II   & $+$9.8~$\pm$~4.2            & $+$3.7~$\pm$~4.2 \\
Average    & $+$9.8~$\pm$~3.4            & $+$5.0~$\pm$~4.9 \\
\hline
\end{tabular}
\end{table}