\begin{table}%t3
\caption{\label{rv} Radial velocity.}                 
%\centering
\par
\begin{tabular}{lcc}        
\hline\hline\noalign{\smallskip}                
~~~~~JD days & RV (km~s$^{-1}$) & $\sigma$ (km~s$^{-1}$) \\    
\hline   
2452388.3341\tablefootmark{a} & 9.23 & 0.19 \\
2452389.3513\tablefootmark{a} & 8.94 & 0.14 \\
2452390.3670\tablefootmark{a} & 8.52 & 0.38 \\
2453099.3573\tablefootmark{a} & 7.82 & 0.06 \\
2453100.3692 & 6.96 & 0.10 \\
2453101.3748 & 7.34 & 0.07 \\
2453102.3876 & 7.84 & 0.05 \\
2454375.6480 & 7.96 & 0.08 \\
2454378.6804 & 7.72 & 0.04 \\
2453331.6400 & 8.71 & 0.03 \\
2453332.6800 & 8.16 & 0.03 \\
2453841.4250 & 7.73 & 0.03 \\
2454812.7429 & 7.76 & 0.21 \\
2454813.7240 & 7.67 & 0.18 \\
2454820.5057 & 7.73 & 0.16 \\
2454821.5126 & 7.53 & 0.16 \\
2454822.5483 & 7.96 & 0.14 \\
\hline                                    
\end{tabular}
\tablefoot{
\tablefoottext{a}{ From L\'opez-Santiago (\cite{Lopez2005}).}}
\end{table}