\begin{table}%t5
\caption{\label{depth}Depth of the 2.0~$\mu$m absorption band due to water ice in Chariklo's spectrum taken at different periods.}
%\centerline
 {\small \begin{tabular}{lccc}
\hline \hline
Reference & Date & $d_H$ (AU) & Depth \\
\hline
\citet{Bro98}   &   27 Oct. 1997 &13.799& $20 \pm 6$\% \\
\citet{BrKo98} &   07 Mar. 1998 &13.725& $20 \pm 8$\% \\
\citet{Dot03}  &   17 Apr. 2001 &13.235& $17 \pm 4$\% \\
\citet{Dot03}  &   10 Mar. 2002 &13.154& $7 \pm 4$\% \\
\citet{Gui08}  &    20 Mar. 2007 &13.277& $3 \pm 2$\% \\
This work         & 03 Feb. 2008 &13.395& $0 \pm 3$\% \\
\hline
\end{tabular}}
\medskip
$d_H$: heliocentric distance for the different observing runs.
\end{table}