\begin{table}%t2
\caption{\label{tab:orbits}Elements of the fitted orbits.}
%\centering
\par
\begin{tabular}{lllll}
\hline \hline\noalign{\smallskip}
&  \object{HD~5388} & \object{HD~181720}	    & \object{HD190984}	& \\
\hline
$P$             	& 777 $\pm$ 4             & 956 $\pm$ 14			    & 4885 $\pm$ 1600	& [d]\\
$T$             	& 2~454~570 $\pm$ 9    & 2~453~631 $\pm$ 30		    & 2~449~572 $\pm$ 1600	& [d]\\
$a$			& 1.76                          & 1.78				    & 5.5                                 & [AU]\\
$e$             	& 0.40 $\pm$ 0.02       & 0.26 $\pm$ 0.06		    & 0.57 $\pm$ 0.10           &  \\
$V_r$           	& 39.308 $\pm$ 0.001& $-$45.3352 $\pm$ 0.0004 & 20.269 $\pm$ 0.004    & [km~s$^{-1}$]\\
$\omega$        	& 324 $\pm$ 4              & 177 $\pm$ 12			   & 318 $\pm$ 5 		& [degr] \\ 
$K_1$           	& 41.7 $\pm$ 1.6          & 8.4 $\pm$ 0.4			   & 48 $\pm$ 1			& [m~s$^{-1}$] \\
$f_1(m)$        	& 4.47 $\times$ 10$^{-9}$	 &  0.053 $\times$ 10$^{-9}$		   & 30.95				& [$M_{\odot}$]\\ 
$\sigma({\rm O{-}C})$	& 3.33                           & 1.37				   & 3.44				& [m~s$^{-1}$]  \\    
$N$             	& 68                              & 28					   & 47				&  \\
$m_2~\sin{i}$  	& 1.96                           & 0.37				   & 3.1				 & [$M_{{\rm Jup}}$]\\[2pt]
\hline
\end{tabular}
\end{table}