\begin{table}%t15
 %\centering
\par
\caption{\label{4998}Radial-velocity measurements of E1-4998. }
\begin{tabular}{lllll}
\hline \hline
JD-2~400~000.& $\phi$& RV& $\sigma$&Instr.\\
&&[km~s$^{-1}$]&[km~s$^{-1}$]&\\
\hline
54~487.645& 0.24& 25.& 0.2&HA \\
54~524.625& 0.91& 3. &0.4&HA  \\     
\hline
\end{tabular}
\end{table}