\begin{table}%t2
\caption{Observing log and radial velocities. 
\label{T1}}
%\centerline
 { \begin{tabular}{lrll}
  \hline\hline
  \noalign{\smallskip}
HJD   & Phase   & $v_{\rm r}$   & $\sigma_{v_{\rm r}}$  \\
        &         & (\kms)	    & (\kms)	 \\
  \hline
2~451~639.681 &    0.187  & 7.1 &       0.6 \\
2~451~640.647 &    0.791  & 7.8 &   0.6 \\
2~451~641.648 &    1.416  & 8.6 &   0.5 \\
2~451~642.662 &    2.050  & 7.4 &   0.6 \\
2~451~643.744 &    2.726  & 7.6$^a$ &   2.4 \\
2~451~644.677 &    3.309  & 8.3 &   0.6 \\
2~451~660.683 &   13.308  & 8.8 &   0.5 \\
2~451~661.668 &   13.924  & 8.7 &   0.6 \\
2~451~662.652 &   14.538  & 9.5 &   0.6 \\
2~451~663.654 &   15.165  & 7.5 &   0.5 \\
2~451~664.667 &   15.798  & 9.0 &   0.6 \\
2~451~665.653 &   16.413  & 9.8 &   0.5 \\
2~451~666.661 &   17.043  & 8.0 &   0.5 \\
2~451~667.665 &   17.670  & 7.4 &   0.6 \\
2~451~668.670 &   18.298  & 8.1 &   0.7 \\
  \hline
 \end{tabular}}
\par
\smallskip
\par
$^a$ With 16~Vir as RV standard.
\end{table}