\begin{table}%t6
\caption{\label{table2}Elements of the spectroscopic orbit of the primary.}
%\centerline
{\small\begin{tabular}{lll}
\hline
\hline
Parameter&Vitrichenko (2002)& This work\\
\hline
$P$ [yr]        &120(6)  &10.8(3)\\
$K$ [\kms]      &13(2)   &12.4(7)\\
$e$             &0 (assumed) &0.31(9)\\
$\omega$        &--      &56(11) \\
$T$ [yr]        &1911(13)&JD~2~451~747(86)\\
$\gamma$ [\kms] &22(1)   &22.5(8)\\
\hline
\end{tabular}}
\end{table}