\begin{table}%t2
\caption{Sample of the list of observations available 
only in electronic form. Starting from Col.~1 we have: the international 
code adopted for Jupiter's~satellites; the time in year, month, and 
decimals of the day in Universal Time; and the coordinates' right ascension 
and declination, given in degree and fraction. These topocentric observed 
positions of eight satellites refer to a~mean equator and equinox~J2000 system.}\label{tab2}
%\centering
\small
\begin{tabular}{lccc}
\hline\hline
Code & Time & Right Ascension & Declination \\
\hline
506&1995~~6~13.1079861&247.1854646&--20.7743250\\
506&1995~~6~13.1101505&247.1852150&--20.7742888\\
506&1996~~6~21.0608356&286.4460509&--22.7136093\\
\hline
\end{tabular}
\end{table}