\begin{table}%t1
\caption{Mean orbital elements for new comet groups.}\label{tab1}
%\centerline
{
\begin{tabular}{c c c c}
\hline\hline
& Meyer group & Marsden group & Kracht group \\ \hline
$q$ [AU]& 0.0359 & 0.0481 & 0.0449 \\
$\omega$ [deg] & 57.26 & 22.65 & 59.38 \\
$\Omega$ [deg] & 72.98 & 81.92 & 42.78 \\
$i$ [deg] & 72.44 & 27.14 & 13.25 \\ \hline
\end{tabular}}
\par
\medskip
{$q$...Perihelion distance, $\omega$...Argument of perihelion,}\\
{$\Omega$...Ascending node, $i$...Inclination.}
\end{table}