\begin{table}%tB.3
\caption{\label{PM52_h2:tab}Proper Motions in HH~52 and HH~53 -- H$_2$.}
\small%\centerline
 {
\begin{tabular}{ccccccccccc} 
\hline\hline 
Knot ID   &  \multicolumn{3}{c}{$\alpha$(2000.0)} & \multicolumn{3}{c}{$\delta$(2000.0)} &  PM  &  PA  &  $v_{\rm tan}$  & Filter \\
            &   \multicolumn{3}{c}{($^{\rm h}$$^{\rm m}$$^{\rm s}$)} & \multicolumn{3}{c}{($\degr$ $\arcmin$ $\arcsec$)}     & ($\arcsec$~yr$^{-1}$) &  ($\degr$)  & (km~s$^{-1}$) \\
\hline 
HH~52~B2/B3 &12&55&05.0&--76&57&54  & 0.026 $\pm$ 0.004$^{a}$  &  40 $\pm$ 9 & 22 $\pm$ 4$^{a}$      & H$_2$ \\
HH~52~B5/B6 &12&55&02.7&--76&57&57  & 0.041 $\pm$ 0.014$^{b}$  &  281 $\pm$ 12  & 35 $\pm$ 12$^{b}$      &  H$_2$  \\
HH~52~C1 &12&55&05.4&--76&58&01  & 0.008 $\pm$ 0.004$^{b}$  &  51 $\pm$ 26  & 7 $\pm$ 3$^{b}$    & H$_2$ \\
HH~53~A  &12&55&15.4&--76&57&30  & 0.016 $\pm$ 0.003  & 298 $\pm$ 15 & 14 $\pm$ 3  & H$_2$ \\
HH~53~B  &12&55&14.5&--76&57&31  & 0.007 $\pm$ 0.003$^{b}$  & 231 $\pm$ 34 &  6 $\pm$ 3$^{b}$  & H$_2$ \\
HH~53~C  &12&55&16.5&--76&57&30  & 0.010 $\pm$ 0.003  & 270 $\pm$ 26 & 9 $\pm$ 2             & H$_2$ \\
HH~53~H  &12&55&15.2&--76&57&26  & 0.024 $\pm$ 0.004  &  27 $\pm$ 8  & 21 $\pm$ 4    & H$_2$ \\
\hline 
\end{tabular}}
\medskip
Notes: $^{a}$~mean value, variable in velocity, see text and Table~\ref{acc:tab};
$^{b}$~below 3$\sigma$.\\
\end{table}