\begin{table}%t4
%\centering
\par
\caption {\label{tBert}Circular orbital solution for both component of WR~29.}
\begin{tabular}{l c c}
\noalign{\smallskip}\hline\hline\noalign{\smallskip}
Element                   &  O-type        &  WN-type \\
\noalign{\smallskip}\hline\noalign{\smallskip}
$P$ [d]                   & \multicolumn{2}{c}{3.16412~$\pm$~0.00001 }   \\
$a \sin i$ [$R_{\odot}$]  & 13.0 $\pm$ 0.2       & 15.0 $\pm$ 0.2 \\
$K$ [km~s$^{-1}$]         &  207 $\pm$ 5         &  242 $\pm$ 3   \\
$M \sin^3 i$ [$M_{\odot}$]&   16 $\pm$ 1         &   14 $\pm$ 2   \\
$M_{\rm WR}/M_{\rm O}$    & \multicolumn{2}{c}{0.87 $\pm$ 0.04}   \\
$T_{VR_{\rm Max}^{\rm WN}}$ [HJD] & \multicolumn{2}{c}{$2~450~540.74 \pm 0.03$} \\
$V_{\gamma}$ [km~s$^{-1}$]& \multicolumn{2}{c}{14 $\pm$ 2}        \\
\hline
\end{tabular}
\end{table}