\begin{table}%t5
      \caption{Probable basic physical properties of \usg\ based on
orbital solution~4 of Table~\ref{rvsol} derived for three~possible values of
the orbital inclination. Tabulated are masses~$M_1$ and~$M_2$, the
semi-major axis~$A$, Roche-lobe radii~$R^{\rm Roch}_1$ and~$R^{\rm Roch}_2$,
and the minimum and maximum angular \mbox{dimensions} of the semi-major axis~$a_{\rm min.}$ and~$a_{\rm max.}$ derived for the range given by the Hipparcos parallax and its error
$p=0\farcs00195$~$\pm$~$0\farcs00072$.}\label{dim}
%\centering
\small
\begin{tabular}{rccc}
\hline\hline
% & & & & & \\[-8pt]
Element&$i=70^\circ$&$i=50^\circ$&$i=30^\circ$  \\
\hline
 $M_1$ (\ms)&2.95&5.45&19.6\\
 $M_2$ (\ms)&4.64&8.56&30.8\\
 $A$ (\rs)  &220.7&270.8&414.8\\
$R^{\rm Roch}_1$ (\rs)&73.7&90.3&138.4\\
$R^{\rm Roch}_2$ (\rs)&92.0&112.8&172.9\\
 $a_{\rm min.}$ ($^{\prime\prime}$)&0.0013&0.0015&0.0024\\
 $a_{\rm max.}$ ($^{\prime\prime}$)&0.0027&0.0034&0.0052\\
\hline
\end{tabular}
\end{table}