\begin{table}%t3
%\centering
\par
\caption{\label{tab:rv2}HD32778 radial-velocity data.} 
\begin{tabular}{ccc}
\hline\hline \noalign{\smallskip}
\multicolumn{1}{c}{JD}& \multicolumn{1}{c}{$RV$~(m/s)}& \multicolumn{1}{c}{$\sigma$$_{\rm{rv}}$~(m/s)}\\
\hline
& & \\
2452594.134 &  --841.5 &  2.0 \\
2452744.876 &  --502.5 &  2.1 \\
2453042.025 &     0.0 &  1.8 \\
2453046.980 &    19.8 &  2.8 \\
2453402.991 &   448.1 &  2.0 \\
\hline
\end{tabular}
\end{table}