\begin{table}%t1
%\centering
\par
\caption{\label{tab1}Present-day cluster positions.}
%\renewcommand{\tabcolsep}{2.5mm}
\par
\begin{tabular}{lrrrr}
\hline\hline
Cluster&$\ell$&$b$&$\alpha(J2000)$&$\delta(J2000)$ \\
&(\degr)&(\degr)&(h:m:s)&($\degr,\arcmin,\arcsec$)\\
(1)&(2)&(3)&(4)&(5)\\
\hline
$\omega$~Centauri & 309.10 & $+$14.97 & 13:26:46 & $-47$:28:37\\
BDSB~122          &  26.84 &  $+$0.65 & 18:37:58 & $-$6:53:00\\
Stephenson~2      &  26.18 &  $-$0.06 & 18:39:20 & $-$6:01:44\\
\hline
\end{tabular}
\end{table}