\begin{table}%t1
%\centering
\par
\caption{\label{t1}Astrometry of TWA~5 A and B.}
\begin{tabular}{lcccccccc}
\hline\hline
\noalign{\smallskip}
Epoch  & JD - & Telesope and & Band & \multicolumn{3}{c}{Separation [arcsec] (a)} & PA (b)  & Ref.\\
year   & 2~450~000 & instrument   &  & in RA & in Dec & total & $[^{\circ}]$ & (c)  \\ 
\hline
1998.1 & 863.5  & IRTF Speckle  & $K$   & $-0.1 \pm 0.1$ & $1.9 \pm 0.1$ & $1.9 \pm 0.1$ & $357     \pm 3 $ & Webb99 \\
& & &corrected: & $-0.1 \pm 0.1$ & $1.9 \pm 0.1$ & $1.9 \pm 0.1$ & $357 \pm 3 $ & \\
1998.3 & 928.8  & HST/Nicmos    & $H$  & $-0.04 \pm 0.01$ & $1.95 \pm 0.01$ & $1.96 \pm 0.01$ & $358.8 \pm 0.1 $ & Low99(f) \\
& & &corrected: & $-0.04 \pm 0.01$ & $1.95 \pm 0.01$ & $1.96 \pm 0.01$ & $358.8 \pm 0.1$ & \\
1998.5 & 1007.6 & HST/Nicmos & $HK$(d) & $-0.038 \pm 0.001$ & $1.960 \pm 0.006$ & $1.960 \pm 0.006$ & $358.89  \pm 0.03$ & Wei00 \\
&&&corrected: & $-0.038 \pm 0.001$ & $1.960 \pm 0.006$ & $1.960 \pm 0.006$ & $ 358.89  \pm 0.03$ &\\
2000.1 & 1589.6 & Keck/KCam     & $H$   & n/a (g) & n/a (g) & $1.956  \pm 0.012  $& n/a (g)  & Mac01 \\
&&&corrected: & n/a (g) & n/a (g) & $1.931 \pm 0.012$ & n/a (g) &  \\
2000.1 & 1596.6 & VLT/FORS2     & $I$   & $-0.091 \pm 0.037$ & $1.950 \pm 0.034$ & $1.952  \pm 0.05   $&$ 357.3   \pm 1.2$  & Neu00 \\
&&&corrected: & $-0.102 \pm 0.037$ & $1.925 \pm 0.034$ & $1.928 \pm 0.04$ & $357.0 \pm 1.3$ & \\
2000.1 & 1597.6 & Keck/KCam     & $JHK$ & $-0.0286 \pm 0.0467$ & $1.9538 \pm 0.0320$ & $1.954  \pm 0.008  $&$359.16   \pm 1.08$ & Bra03 \\
&&&corrected: & $-0.0386 \pm 0.0467$ & $1.9288 \pm 0.0321$ & $1.9292 \pm 0.057$ & $358.85 \pm 1.18$ & \\
2000.3 & 1651.6 & VLT/ISAAC     & (d) & $-0.093 \pm 0.097$&$1.967 \pm 0.096 $ & $1.969 \pm 0.091 $&$ 356.8 \pm 3.0$ & Neu00 \\
&&&corrected: & $-0.103 \pm 0.097$ & $1.944 \pm 0.096$ & $1.947 \pm 0.091$ & $357.0 \pm 3.1$ & \\
2001.2 & 1965.0 & Gem/Hokupaa   & $H$ (e)  & n/a (g) & n/a (g) & $1.9357 \pm 0.0107 $& n/a (g)        & Neu01 \\
&&&corrected: & n/a (g) & n/a (g) & $1.9157 \pm 0.0109$ & n/a (g) &  \\
2003.1 & 2687.8 & VLT/NACO      & $K_{\rm s}$ & $-0.076 \pm 0.013$&$1.921 \pm 0.020$&$1.923 \pm 0.020$&$ 357.74 \pm 0.38$ & Mas05 (h) \\
&&&corrected: & $-0.066 \pm 0.013$ & $1.924 \pm 0.020$ & $1.925 \pm 0.020$ & $358.04 \pm 0.48$ & \\
2007.5 & 4291.0 & VLT/NACO      & $K_{\rm s}$ & $-0.123 \pm 0.013$&$1.897 \pm 0.011$&$1.901 \pm 0.011$&$ 356.28 \pm 0.40$ & this work \\
&&&corrected: & $-0.123 \pm 0.013$ & $1.882 \pm 0.011$ & $1.886 \pm 0.011$ & $356.26 \pm 0.58$ & \\
2008.4 & 4630.5 & VLT/NACO      & $K_{\rm s}$ & $-0.130 \pm 0.013$&$1.887 \pm 0.012$&$1.892 \pm 0.012$&$ 356.07 \pm 0.40$ & this work \\  
&&&corrected: & $-0.125 \pm 0.013$ & $1.883 \pm 0.012$ & $1.887 \pm 0.012$ & $356.20 \pm 0.50$ & \\ 
\hline
\end{tabular}
\tablefoot{
{\bf a)} {\em Corrected} values are separations and PA between A and B after correction for photocenter shift of Aa+b due to orbit of Ab around Aa (K07). Separation in $\alpha$ is negative for B west of A, and separation in $\delta$ is positive for B north of A. 
{\bf b)} PA is position angle measured from north over east to south. 
{\bf c)} References are Lowrance et~al. (\cite{Lowrance1999}, Low99),  Macintosh et~al. (\cite{Macintosh2001}, Mac01), Weintraub et~al. (\cite{Weintraub2000}, Wei00), Neuh\"auser et~al. (\cite{Neuhauser2000}, Neu00), Webb et~al. (\cite{Webb1999}, Webb99),  Neuh\"auser et~al. (\cite{Neuhauser2001}, Neu01), Brandeker et~al. (\cite{Brandeker2003}, Bra03), and Masciadri et~al. (\cite{Masciadri2005}, Mas05). 
{\bf d)} Narrow band filter(s). 
{\bf e)} With Wollaston polarimeter. {\bf f)} Values (listed in the first row for Low99) are those given by Wei00 according to priv. comm. with P. Lowrance, corrected compared to those published in Low99. {\bf g)} Values not available (not published). {\bf h)} Mas05 list neither separation nor PA, data reduced by us.}
\end{table}