\begin{table}%t2
%\centering
\par
\caption{\label{table2}Absolute positions of the strongest OH maser features
observed at 1.6--1.7 and 6~GHz with MERLIN.}
\begin{tabular}{ccccc}     
\hline \hline \noalign{\smallskip}
Frequency  & RA   & Dec     & Pos. &LSR Vel.\\
  (MHz)    &(J2000) & (J2000) & Error &(km~s$^{-1}$)\\
           & H:m:s  & $^\circ$:$'$:$''$&(mas)&\\
\hline 
6035 & 19:27:44.0213 & $+$21:30:03.415 &$\pm$3.2& 21.1 \\
1720 & 19:27:44.0209 & $+$21:30:03.395 &$\pm$13& 21.5 \\
1612 & 19:27:44.0229 & $+$21:30:03.309 &$\pm$5.6& 9.1 \\
\hline 
\end{tabular}
\end{table}