\begin{table}%t2
\caption {\label{tabres}Orbital fits to the Hipparcos IAD for \object{HD~131664} and \object{HD~43848},
assuming knowledge of~$P$, $e$, $T_0$, and $\omega$ from the
spectroscopic orbit. }
%\centering
                          % used for centering table
\begin{tabular}{c c c c c c c c c c c c}        % centered columns (4 columns)
\hline\hline    
\noalign{\smallskip}
Star Name & $\Delta\alpha$ & $\Delta\delta$ & $\Delta\pi_\star$ & $\Delta\mu_{\alpha^\star}$
& $\Delta\mu_\delta$ & $i$ & $\Omega$ & $M_{\rm c}$ & $\chi^2_\nu(5)$ & $\chi^2_\nu(7)$ & $P(F)$\\
& (mas) & (mas) & (mas) & (mas yr$^{-1}$) & (mas yr$^{-1}$) & (deg) & (deg) & ($M_{\rm J}$) & & & \\
\hline
HD 131664 & $-2.8\pm0.6$& $-2.1\pm0.7$&$0.5\pm0.9$ &$-5.1\pm0.7$ &$-4.1\pm0.8$ &$55\pm33$ &$22\pm28$ &$23_{-5}^{+26}$ & 1.39& 1.15& 0.001\\
HD 43848 & $-4.9\pm0.7$& $-9.8\pm0.8$& $0.1\pm0.9$& $-8.6\pm0.3$& $0.3\pm0.9$& $12\pm7$& $288\pm22$& $120^{+167}_{-43}$& 1.67& 1.22& 0.0002\\
\hline
\end{tabular}
\end{table}