\begin{table}%t2
 \caption{Orbital elements of comet 79P/du-Toit-Hartley from HORIZONS \citep{Giorgini.et.al96}.}
\label{tab:79Porb}
%\centering
\small
\begin{tabular}{ccc}
\hline \hline 
Symbol & Name & Value \\
\hline
$T$	& epoch	(JD) & 2453372.0\\
$a$	& semi-major axis	& 3.0318309 AU\\
$e$	& eccentricity		& 0.5943219\\
$i$	& inclination		& 2.89345 $(^\circ)$\\
$ \Omega $ & Long. of Asc. Node	& 307.94129 $(^\circ)$\\
$ \omega $ & arg. of perihelion	& 253.13443 $(^\circ)$\\
\hline
\end{tabular}
\end{table}