\begin{table}%t3
\caption{Absolute astrometric results for CT Cha A and companion.
\label{table:3}}
%\centerline
 {
\begin{tabular}{lccc}
\hline\hline
JD -- 2~453~700 & Pixel scale & Separation  & \multicolumn{1}{c}{PA$^a$ }\\
$[{\rm days}]$ & [mas/Pixel] & [arcsec] &  \multicolumn{1}{c}{[$\deg$]} \\
\hline
 \ \ 83.54702 & $13.24 \pm 0.18$ & $2.670 \pm 0.036$ & $300.71 \pm 1.24$\\
   461.63001  & $13.24 \pm 0.19$ & $2.670 \pm 0.038$ & $300.68 \pm 1.32$\\
\hline
\end{tabular}}
\par
\smallskip
Remarks: all data from $K\rm s$-band images. $^a$ PA is measured from N over~E to S.
\end{table}