\begin{table}%t2
\caption{\label{observations}\label{tab2}Results of radio and optical observations.}
%\centering
\par
\begin{tabular}{lllcrrcccl}
\hline\hline
          &\multicolumn{2}{l}{CA/VLA Coordinates}&NVSS & CA/VLA &\multicolumn{1}{c}{CA} & Sp.  &\multicolumn{2}{c}{USNO} & \\
 VASC     &\multicolumn{2}{c}{(4.8~GHz)}         &F1.4 &\multicolumn{1}{c}{F4.8}&\multicolumn{1}{c}{F8.6}& Ind. &$|r-o|$  & $R$   & Spectral \\ 
 name     &RA 2000     & Dec 2000   & mJy &\multicolumn{1}{c}{mJy}&\multicolumn{1}{c}{mJy} &$\alpha$&$\arcsec$& mag & classification  \\ 
\hline
$J1353{-}66$&13 53 40.15 &$-66$ 39 57.58& {--}       & 48.2 $\pm$ 0.1  &41.7 $\pm$ 0.1 &$-0.2$& 0.5     & 17.1& Featureless \\
$J1626{-}33$&16 26 23.08 &$-33$ 29 33.62& 21.8$\pm 0.8$& 0.7 $\pm$ 0.1   &0.8 $\pm$ 0.1  &+0.2: & 0.7     & 15.1& Star K0 III \\
$J1628{-}41$&16 28 47.285&$-41$ 52 39.14& {--}       & 8.8 $\pm$ 0.1  &12.3 $\pm$ 0.1 &+0.7  & 0.7     & 12.4& Star K3 III-IV\\
$J1757{-}41$&17 57 15.658&$-41$ 49 18.76& {--}       & 488.5 $\pm$ 0.2&398.9 $\pm$ 0.2&$-0.3$& 0.3     & 17.0& Sy1, $z = 0.3342$ \\
$J1942+10$&19 42 47.484&+10 33 27.11  & 99.0 $\pm$ 0.5 & 106.0 $\pm$ 0.2 &\multicolumn{1}{c}{--}&+0.1: & 0.2     & 16.1& Featureless \\ 
\hline
\end{tabular}
\end{table}