\begin{table}%t3
\caption{Orbital elements of the C2 double weighted link (see text) for the 2003 apparition, as well as a prediction for the next perihelion passage in 2007.}\label{tab2}
%\centering
\par
\begin{tabular}{l c c c}
\hline\hline
& \multicolumn{3}{c}{C/1999 R1 = C/2003 R5 (SOHO)} \\ \cline{2-2} \cline{4-4}
Epoch & 2003 Sep. 9.0 & & 2007 Sep. 11.0 \\
$T$ & 2003 Sep. 8.819 & & 2007 Sep. 11.263 \\
$q$ [AU] & 0.0570 & & 0.0538 \\
$e$ & 0.97741 & & 0.97860 \\
$\omega$ [deg] & 43.713 & & 48.612 \\
$\Omega$ [deg] & 5.022 & & 0.019 \\
$i$ [deg] & 13.687 & & 12.727 \\
$P$ [yr] & 4.01 & & 3.99 \\
rms [\arcsec] & \multicolumn{3}{c}{28.213}\\ \hline
\end{tabular}
\end{table}