\begin{table}%t5
\caption{Photometry and proper motion of the most obvious candidate members in
the field of Collinder~21.}\label{tab5}
%\centerline
{
\begin{tabular}{ccccccccccc}
\hline
\hline
\multicolumn{1}{c}{ID} &
\multicolumn{1}{c}{TYC 1759-} &
\multicolumn{1}{c}{Name} &
\multicolumn{1}{c}{$\alpha (J2000.0)$}&
\multicolumn{1}{c}{$\delta (J2000.0)$}&
\multicolumn{1}{c}{$V$}  &
\multicolumn{1}{c}{$(B-V)$} &
\multicolumn{1}{c}{$(U-B)$}  &
\multicolumn{1}{c}{$(V-I)$} &
\multicolumn{1}{c}{$\mu_\alpha \cos \delta$ [mas/yr]} &
\multicolumn{1}{c}{$\mu_\delta$ [mas/yr]} \\
\hline
   1&  450& BD+26~307 & 01:50:11.56& +27:01:59.0&   8.20& 0.45&     &      & 56.5 $\pm$ 1.5& --33.5 $\pm$ 0.9\\
   2& 1472& BD+26~304 & 01:50:01.41& +27:03:40.0&   9.80& 0.61&     & 0.82 &  5.1 $\pm$ 1.2& --11.0 $\pm$ 1.2\\
   3& 1025& BD+26~306 & 01:50:12.17& +27:07:47.1&   9.69& 1.75& 1.65&      & --8.7 $\pm$ 1.4&  --1.1 $\pm$ 1.4\\
   4&  468&           & 01:50:08.22& +27:07:00.2&  11.32& 1.39& 1.50& 1.46 & --0.7 $\pm$ 2.3&  --3.3 $\pm$ 2.3\\
   5&  994&           & 01:50:13.40& +27:05:57.5&  11.17& 0.74& 0.44& 0.95 & 48.7 $\pm$ 1.9& --11.5 $\pm$ 1.9\\
   6&  462&           & 01:50:27.06& +27:04:09.7&  11.32& 0.59& 0.26& 0.83 & --6.4 $\pm$ 1.9&  --8.4 $\pm$ 1.9\\
   7& 1333&           & 01:50:08.53& +27:01:49.4&  11.61& 0.89& 0.69& 1.07 & --6.9 $\pm$ 1.2& +16.7 $\pm$ 0.9\\
   8&  266&           & 01:50:05.23& +27:02:00.0&  11.21& 0.98& 0.79& 1.14 & 24.1 $\pm$ 1.9&   4.3 $\pm$ 1.9\\
   9&  866& BD+26~305b& 01:50:02.41& +27:06:13.8&  10.09& 0.85& 0.58& 1.04 & --3.9 $\pm$ 1.3&  --6.7 $\pm$ 1.2\\
  10& 1114& BD+26~305a& 01:50:02.08& +27:05:56.6&  10.36& 1.08& 1.08& 1.18 & --3.6 $\pm$ 1.8&  --5.0 $\pm$ 1.8\\
  11& 1749&           & 01:50:18.14& +27:04:28.9&  12.34& 0.56& 0.27& 0.78 & 11.9 $\pm$ 2.3&  --5.5 $\pm$ 2.3\\
  12&  272&           & 01:50:23.97& +27:02:23.1&  12.81& 0.65& 0.27& 0.86 &  1.9 $\pm$ 1.3&  --8.4 $\pm$ 2.9\\
\hline
\end{tabular}}
\medskip
Note: star $\#$1 was saturated in our photometry,
and magnitude and color have been taken from Tycho-2. Stars~$\#$7 and~$\#$12 have been taken from the UCAC2 catalog.
\end{table}