\begin{table}%t1
\caption{\label{generalinfo}General cluster properties.}
%\centering
\par
\begin{tabular}{ccccc}
\hline\hline\noalign{\smallskip}
 Cluster & RA & Dec & ${\it z}$ &  $r_{500}$ \\
         & (J2000) & (J2000)&  & $h_{70}^{-1}$ kpc\\
\hline 
A496  & 04 33 37.1 & --13 14 46 & 0.033   & 1480\\
A2050 & 15 16 21.6 & +00 05 59 & 0.1183  & 2172\\
A1689 & 13 11 34.2 & --01 21 56 & 0.1823  & 1785\\
A2667 & 23 51 47.1 & --26 00 18 & 0.23    & 2153\\
A2631 & 23 37 39.7 & +00 17 37 & 0.273  & 1976\\
\hline
\end{tabular}
\vspace*{4mm}
\end{table}