\begin{table}%t3
%\centering
\par
\caption {\label{UVW}Heliocentric coordinates ($X$, $Y$, $Z$) and
Galactic velocities ($U$, $V$, $W$) of TWA22~AB together with mean
values for TWA, $\beta$~Pic and Tuc-Hor.}
\par
\begin{tabular}{lcccccccc}
\hline\hline
\noalign{\smallskip}{\smallskip}
    Name & $X$ & $Y$ & $Z$ &  $U$         & $V$           & $W$                 & Age & $d$\\
         &   & pc &  &            &  km~s$^{-1}$       &                   & Myr  & pc\\
\hline
TWA22       &   3.5 $\pm$ 0.2   & --17.2 $\pm$ 0.2   &     0.7 $\pm$ 0.2 &  
--8.0 $\pm$ 0.4 & --17.1 $\pm$ 2.1 & --9.0 $\pm$ 0.2     &  $\le$10(1)  & 17.5 $\pm$ 0.2\\ 
TWA           & 14.4 $\pm$ 8.7   & --46.9 $\pm$ 5.3 &   22.5 $\pm$ 2.5  &  --10.0 $\pm$ 2.0 & --17.6 $\pm$ 1.4 & --4.8 $\pm$ 1.1      &8(2)	& 55 $\pm$ 7 \\
$\beta$ Pic & 9.2 $\pm$ 28.9   &   --7.5 $\pm$ 13.0 & --13.2 $\pm$ 6.5 & 
--10.9 $\pm$ 1.9 & --16.1 $\pm$ 1.0 &--9.0 $\pm$ 1.2        &12 (3)  &
34 $\pm$ 14 \\
Tuc-Hor      &14.1 $\pm$ 17.7 &   --19.4 $\pm$ 8.0 & --34.9 $\pm$ 3.5 & --9.5 $\pm$ 1.7 & --20.6 $\pm$ 1.7 &--0.6 $\pm$ 2.6      &27 (4)  &46 $\pm$ 5 \\
\hline
\end{tabular}
\end{table}