\begin{table}%tA.1
\caption{Physical observation parameters of flux calibrators.}
\label{ephemonline}
%\centering
\small
\begin{tabular}{lccc}
\hline \hline
Target &  Date & Observed CML  & Apparent diameter \\
        &      &  ($^{\circ}$ W)  &  ($''$)\\
\hline
Callisto& 28/01/2005 & 262--267   &   1.312\\
Callisto& 05/02/2005   & 74--80  &    1.344\\
Ganymede & 28/01/2005  & 45--60  &  1.438\\
Ganymede &  05/02/2005  &  90--100  &   1.472\\
\hline
\end{tabular}
\end{table}