\begin{table}%t2
        \caption{\label{tabv}Global properties of galaxy systems.}
                            %\centerline
{
	       \begin{tabular}{l c c c c c c}
            \hline
                     \hline
            \noalign{\smallskip}
 {System} & $N_{\rm g}$ & $\alpha,~\delta$&$\langle v\rangle$&$\sigma_{\rm V}$& 
 $R_{\rm vir}$&$M(<$$R_{\rm vir})$\\
& &(J2000)&${\rm km~ s^{-1}}$&${\rm km\ s^{-1}}$&$h_{70}^{-1}~{\rm Mpc}$& $h_{70}^{-1}10^{14}~{M}_{\odot}$\\
       \noalign{\smallskip}   \hline
         \noalign{\smallskip}
{A1237} &27&112329.5+425419&$58021\pm145$&$\rm 738_{-54}^{+82}$ &1.6&$6\pm2$\\[1mm]
{A1240} &62&112337.6+430551&$58408\pm111$&$\rm 870_{-79}^{+91}$&$1.9{-}2.4^{b}$&$9{-}19^{b}$\\[1mm]
${\rm A1240N}^{a}$&32&112335.2+430832&$\sim$58353&$\rm 709_{-83}^{+88}$&1.6&$5\pm2$\\[1mm]
${\rm A1240S}^{a}$&27&112337.7+430328&$\sim$58817&$\rm 991_{-99}^{+149}$&2.2&$14\pm5$\\
                          \hline
         \end{tabular}}
\medskip 
$^{a}$ As center and mean velocity
of this clump we list the position and velocity of
the respective brightest galaxy. 
\\
$^{b}$ The lower limit comes from the observed
$\sigma_{\rm V}$. The upper limit is obtained when considering the bimodal structure of the cluster (see text).
         \end{table}