\begin{table}%t1
\caption{\label{rvmes}Radial velocity measurements (fragment).}
%\centering
\small
\begin{tabular}{ccrr} 
\hline  \hline
Star & HJD-2~450~000 & RV & err \\
    &            &  \kms   & \kms  \\ 
    \hline
 W3    &2~842.84581     &--11.06 &0.73\\
 W3    &2~859.86137     &--10.79 &0.75\\
 W3    &2~862.92307     &--10.64 &0.76\\
 W3    &2~865.91862     &--10.62 &0.80\\
 W4    &2~842.82617     &7.55   &0.84\\
 W4    &3~217.77759     &8.97   &0.75\\
 W8    &2~474.86347     &4.39   &0.84\\
 W8    &3~217.75920     &5.88   &0.77\\
 W8    &3~632.80986     &3.84   &1.14\\
\hline
\end{tabular}
\end{table}