\begin{table}%t1
\caption{Published and new determinations for the
astrometry of the primary (HIP~71) and secondary (HIP~70) components of
a wide-binary system.}
\small%\centering
\par
\begin{tabular}{llrrrrl}
\hline\hline
Star & Param. & Old & $\sigma$ & New & $\sigma$ & units \\\hline
70 & $\varpi$ & $5.25$ & $13.87$ & $5.95$ & $3.08$ & mas \\
71 & $\varpi$ & $9.13$ & $1.84$ & $7.33$ & $1.36$ & mas \\
70 & $\mu_{\alpha *}$ & $-46.78$ & $16.42$ & $-23.25$ & $3.27$ & mas/yr \\
71 & $\mu_{\alpha *}$ & $-24.50$ & $2.05$ & $-23.61$ & $1.39$ & mas/yr \\
70 & $\mu_\delta$ & $-0.88$ & $11.24$ & $-18.58$ & $1.92$ & mas/yr \\
71 & $\mu_\delta$ & $-19.47$ & $1.40$ & $-20.55$ & $0.85$ & mas/yr \\
\hline
\end{tabular}
\label{tab:hip70_71}
\end{table}