\begin{table}%t6
\par
\caption {\label{tab_bin}Possible multiple systems in IC~2391 (see Sect.~\ref{binarity}).}
%\centerline
 {\tiny\begin{tabular}{cccccccccc}  
\hline\hline  		   &              & Primary star    &                &  Separation & 	   &             & Neighbor star &             &          	\\
		   &    ID        & Designation     &	Ref.$^{\dag}$& (arcsec)    &  RA & Dec	 &    $V$        & $R_{\rm c}$ & $I_{\rm c}$  \\	 \hline 
Previously known   &   --   & Cl*~IC~2391~CTIO~126   &  	$^a$	     &    3.1	 & 08:42:49.385  & $-$52:52:16.96 &  18.25~$\pm$~0.07 & 17.13~$\pm$~0.03 & 16.46~$\pm$~0.04 \\
cluster members    &   --   & Cl*~IC~2391~CTIO ~25   &  	$^a$	     &    2.8	 & 08:42:46.025  & $-$52:46:52.64 &  20.02~$\pm$~0.07 & 18.82~$\pm$~0.03 & 17.88~$\pm$~0.06 \\
\hline
                   &   6   &  WFI~J08410814-5255027 &  	$^b$	     &    3.9	 & 08:41:07.726  & $-$52:55:03.61 &  16.00~$\pm$~0.06 & 14.98~$\pm$~0.03 & 14.32~$\pm$~0.04 \\ 
New member         &   \arcsec   &         \arcsec              &  	$^b$	     &    3.5	 & 08:41:08.489  & $-$52:55:04.19 &  15.72~$\pm$~0.05 & 15.02~$\pm$~0.04 & 14.70~$\pm$~0.05 \\ 
candidates         &  26   &  WFI~J08434640-5257036 &  	$^b$	     &    4.5	 & 08:43:46.814  & $-$52:57:06.12 &  16.39~$\pm$~0.05 & 15.68~$\pm$~0.04 & 15.26~$\pm$~0.05 \\ 
                   &  27   &  WFI~J08434751-5250136 &  	$^b$	     &    3.3	 & 08:43:47.844  & $-$52:50:12.48 &  20.76~$\pm$~0.07 & 19.45~$\pm$~0.03 & 18.52~$\pm$~0.04 \\ 
                   &  29   &  WFI~J08440199-5310356 &  	$^b$	     &    2.4	 & 08:44:02.071  & $-$53:10:37.92 &  15.48~$\pm$~0.06 & 14.47~$\pm$~0.03 & 13.77~$\pm$~0.04 \\ 
\hline               
\end{tabular}}
\par
\smallskip
$^\dag$ {$^a$ \citet{Bar01b}; $^b$ This work.} 
\end{table}