\begin{table}%t2
      \caption {\label{tab2}HD 189~733 system parameters.}
%\centerline
 {        \begin{tabular}{l l}
            \hline\hline
              Parameter & Value\\
            \hline
             $P_{\rm rot}$ [days] & 11.953 $\pm$ 0.009$^{{a}}$  \\
             $M_{*}$ [$M_{\odot}$] & 0.82 $\pm$  0.03$^{{b}}$  \\
             $P_{p}$ [days] & 2.2185733\  [fixed]$^{{c}}$\\
            $T_{0}$ [BJD]  & 2453988.24876\ [fixed]$^{{c}}$\\
            $T_{T}$ [BJD]  & 2453988.8034\ [fixed]$^{{c}}$\\
            $v \sin i_{\ast}$ [km s$^{-1}$] & 2.97 $\pm$ 0.22$^{{c}}$\\
             $i$ [$^{\degr}$]  & 85.68 $\pm$ 0.04$^{{d}}$\\
            $e$  & $\leqslant$0.008 \\
            $V$ [km~s$^{-1}$] & --2.2765 $\pm$ 0.0017 \\
            K [m s$^{-1}$]\ (before\ correction) & 200.60 $\pm$ 2.32 \\
            K [m s$^{-1}$]\ (after\ correction) & 200.56 $\pm$ 0.88 \\
            $M_{\rm p}$ [$M_{\rm Jup}$]  & 1.13 $\pm$ 0.03  \\
            \hline
         \end{tabular}}
\par
         \smallskip
$^{{a}}$ Henry \& Winn (\cite{Henry08});
$^{{b}}$ Bouchy et~al. (\cite{Bouchy05});
$^{{c}}$ Winn et~al. (\cite{Winn07});
$^{{d}}$~Pont et~al. (\cite{Pont07}).
   \end{table}