\begin{table}%t6
\caption{\label{table6}Observed and derived properties for HCG 23 regions.}
\small%\centerline
 {
\begin{tabular}{cccccccc}
\hline \hline
ID & RA  & Dec & FUV & NUV & FUV--NUV$^a$ & Age$^b$& Velocity$^c$\\
~ &(2000)&(2000) & ~& ~ & ~ &(Myr) &(km s$^{-1}$)\\
\hline
1  & 46.71703  &  --9.56431 & 21.64 $\pm$ 0.11 & 21.02 $\pm$ 0.05 & 0.50  $\pm$ 0.10 &      &  \\
2  & 46.79337  &  --9.57706 & 18.67 $\pm$ 0.03 & 17.86 $\pm$ 0.01 & 0.49  $\pm$ 0.05 &	   &  10150 \\
3  & 46.71273  &  --9.59288 & 19.81 $\pm$ 0.04 & 19.51 $\pm$ 0.02 & 0.41  $\pm$ 0.07 &	   &   \\
4  & 46.71515  &  --9.60920 & 21.55 $\pm$ 0.14 & 21.24 $\pm$ 0.07 & 0.45  $\pm$ 0.13 &	   &   \\
5  & 46.72348  &  --9.62984 & 20.49 $\pm$ 0.07 & 19.31 $\pm$ 0.03 & 0.45  $\pm$ 0.08 &	   &   \\
6  & 46.79189  &  --9.62909 & 21.64 $\pm$ 0.10 & 20.56 $\pm$ 0.03 & 0.82  $\pm$ 0.09 &	   &   \\
7  & 46.81795  &  --9.63047 & 21.30 $\pm$ 0.09 & 21.29 $\pm$ 0.06 & -0.07 $\pm$ 0.09 &	10.0   &    \\
8  & 46.77020  &  --9.67570 & 21.11 $\pm$ 0.09 & 20.87 $\pm$ 0.04 & 0.20  $\pm$ 0.08 &	   &   \\
9  & 46.78895  &  --9.48790 & 19.90 $\pm$ 0.05 & 19.90 $\pm$ 0.02 & 0.00  $\pm$ 0.05 &	 21.5 & 5283 \\
\hline
\end{tabular}}
\medskip
$^a$ Using a fixed aperture of 4\arcsec; 
$^b$~age from FUV$-$NUV using Thilker et~al. (\cite{thi07}); 
$^c$~velocity taken from \mbox{de Carvalho} et~al. (\cite{dec97}) and Hickson et~al. (\cite{hic92}) for object~9 and~2 respectively. 
%\vspace*{5mm}
\vspace*{-2mm}
\end{table}