\begin{table}%t1
\caption{Summary of the astrometric and photometric estimations. 
In the first three lines the HST/WFPC2 results
from the Masciadri et~al. (2003) and Freed et~al. (\cite{Freed2003}) analyses are shown. 
In the following lines the results obtained from AO-Hokupa'a data and 
the from AO-NACO data are shown.}
\label{table_period}
%\centering
\par
\begin{tabular}{lccc}
\hline
\hline
  &  & This paper & Freed et~al. \\
\hline
HST/WFPC2 1997/4/12   & Separation ($\arcsec$) & 0.255 $\pm$  0.007 &  0.270 $\pm$  0.010 \\
 &  Position Angle (degrees) & 90.3 $\pm$ 0.8 & 82.8 $\pm$ 1.5    \\
 &  $\Delta{I_{\rm c}}$ & 4.34 $\pm$ 0.14 & 4.42 $\pm$  0.17   \\
\hline
AO-HOKUPA 2002/2/7 &  Separation ($\arcsec$) & -- & 0.207 $\pm$  0.007 \\
 & Position Angle (degrees) & -- & 151.9 $\pm$ 1.2 \\
 &  $\Delta{H}$ & -- &   3.15 $\pm$ 0.30    \\
 &  $\Delta{K{\rm s}}$ & -- &  2.77 $\pm$ 0.10     \\
\hline
 AO-NACO  2002/3/26 & Separation ($\arcsec$) & 0.164 $\pm$  0.004 & --  \\
 & Position Angle (degrees) & 157.3 $\pm$ $2.0$ & --\\
 &  $\Delta{H}$ & 3.03 $\pm$ 0.13&   --    \\
 &  $\Delta{K{\rm s}}$ & 2.53 $\pm$ 0.03 &  --  \\
\hline
\end{tabular}
\end{table}