\begin{table}%t3
\caption{ACO clusters (left) and primary galaxies selected (right).} \label{tab:aco}
%\centering
\small
\begin{tabular}{c c c c c c | c c c c c c }
\hline \hline
ACO & RA (h \farcm) & Dec (\degr $'$) & Velocity & Richness & Diameter & RA (\degr) & Dec (\degr) & Velocity & Major axis & Hubble\\
number & (J2000) & (J2000) & (\kms) & class & (\arcm) & (J2000) & (J2000) & (\kms) & (\arcm) & type\\
\hline
 160 & 01 12.9 & +15 31 & 13~410 & 0 & 40 & 18.248726 & 15.491506 & 13~137 & 0.78 & cD \\
 260 & 01 51.9 & +33 10 & 10~440 & 1 & 50 & 28.024008 & 33.190811 & ... & 0.72 & ... \\
 671 & 08 28.5 & +30 25 & 14~820 & 0 & 50 & 127.132118 & 30.432072 & 15~087 & ... & ... \\
 957 & 10 14.0 & -00 55 & 13~200 & 1 & 50 & 153.409729 & -0.925455 & 13~293 & 1.5 & E+ pec \\
 999 & 10 23.4 & +12 51 & 9540 & 0 & 50 & 155.849396 & 12.835186 & 9764 & 1.2 & BCG \\
 1100 & 10 48.9 & +22 14 & 13~650 & 0 & 40 & 162.190262 & 22.217989 & 13~990 & 0.45 & BCG \\
 1177 & 11 09.5 & +21 42 & 9480 & 0 & 50 & 167.435104 & 21.759527 & 9589 & 1.8 & BCG \\
 1213 & 11 16.5 & +29 16 & 14~040 & 1 & 50 & 169.095093 & 29.252588 & 13~581 & 1.0 & SB0 \\
 2040 & 15 12.8 & +07 26 & 13~680 & 1 & 32 & 228.197601 & 7.435083 & 13~683 & 1.0 & BCG \\
 2152 & 16 05.4 & +16 27 & 11~220 & 1 & 50 & 241.371292 & 16.435858 & 13~211 & 1.3 & E \\
 2506 & 22 56.6 & +13 20 & 9930 & 1 & 20 & 344.288147 & 13.188705 & 6860 & 0.5 & ... \\
 2572 & 23 18.4 & +18 44 & 11~850 & 0 & 50 & 349.626160 & 18.689167 & 11~263 & 0.9 & cD \\
 2593 & 23 24.5 & +14 38 & 12~990 & 0 & 50 & 351.084259 & 14.646864 & 12~489 & 1.3 & cD \\
 2657 & 23 44.9 & +09 09 & 12~420 & 1 & 46 & 356.239227 & 9.193000 & 12~063 & 0.8 & cD \\
 2666 & 23 50.9 & +27 09 & 7950 & 0 & 50 & 357.744812 & 27.147602 & 8191 & 1.6 & cD \\
\hline
\end{tabular}
\end{table}