\begin{table}%t2
\caption{Orbital elements for \tcar{}. $P$~is the orbital period, 
$v_\gamma$~is the system velocity, $K_1$ the semi-amplitude of the radial velocity curve of component~1, $e$~is the eccentricity, $\omega_1$ the periastron longitude,
$a_1$ the semi-major axis, $i$~the orbital inclination,
$t({\rm conj})$ the time of the primary conjunction, and $t({\rm per})$ the time of the periastron passage.}\label{tab:orbit}
%\centering
\small
\begin{tabular}{ll}
\hline
\hline
$P$           & 2.20288       $\pm$    0.00001 d \\
$v_\gamma$    & 20.18         $\pm$   0.04 km~s$^{-1}$ \\
$K_1$         & 18.93         $\pm$   0.05 km~s$^{-1}$ \\
$e$           & 0.129        $\pm$   0.002 \\
$\omega_1$    & 81.8           $\pm$   1.7$^\circ$ \\
$a_1$ sin $i$ & 0.00395      $\pm$   0.00014~AU \\
$t({\rm conj})$     & MJD 54~302.4367  $\pm$   0.0012 \\
$t({\rm per})$     & MJD 54~302.3984  $\pm$   0.0092 \\
\hline
\end{tabular}
\end{table}