\begin{table}%T2
\caption
{Positions of ISO observations in absolute coordinates.
\label{tab-iso-positions}}
%\centerline
 {\small
\begin{tabular}{lclc}
%\noalign{\smallskip} 
\hline \hline %\noalign{\smallskip}
Name$^*$ & TDT-No. & RA [J2000] & Dec [J2000]\\ 
%\noalign{\smallskip} 
\hline
DR21 E{}/East & 15200785 & $20^\RM{h}39^\RM{m}09~\fs14$ &$42^\circ20'05\farcs0$ \\%771 1205   & 90 22\\
%DR~21 East& 55500823 & \\%746 1178.5 &\\
%           & 54001323 &            &\\
DR21 C{}/Center & 15200786 & $20^\RM{h}39^\RM{m}00~\fs93$ &$42^\circ19'42\farcs0$ \\%679 1182   & -2 -1\\
%DR~21 West& 54001470 & \\%601 1147   &\\
DR21 W{}/West & 15200787 & $20^\RM{h}38^\RM{m}52~\fs23$ &$42^\circ19'00\farcs5$\\%582 1140.5 & -99 -42\\
DR21 (OH)& 34700439 & $20^\RM{h}39^\RM{m}00~\fs95$ &$42^\circ22'37\farcs6$ \\%679 1358   &-2 175\\
DR21 FIR1& 35500317 & $20^\RM{h}39^\RM{m}00~\fs2$  &$42^\circ24'34\farcs6$\\
\hline 
\end{tabular}}
\par
\medskip
 $^*$ DR21~C{} is centred on the \HII{}-region.
The projected distance of DR21~E{} (resp. DR21~W{}) from position DR21~C{} is
0.77~pc (resp. 0.89~pc) at a distance of 1.7~kpc.
%\vspace{-3mm}
\end{table}