\begin{table}%t3
\par
\caption{Forced precession model for 46P/Wirtanen 1948--1999.\label{tab3}}
%\centerline
 {
\begin{tabular}{ccc}\hline\hline
Epoch & 2003 Dec. 27.0 TT \\
$T$ & 2002 Aug. 26.62046 & Aug. 26.61928\\
$\omega$ & 356.37262 & 356.37450\\
$\Omega$ & 82.16978 & 82.16775\\
$I$ & 11.73824 & 11.73849\\
$q$ & 1.0586022 & 1.0586088\\
$e$ & 0.6577448 & 0.6577425\\
$A_{\rm I}$ & +0.5207$\pm 0.0067$ & +0.6010$\pm 0.0097$\\
$A_{\rm II}$ & +0.7093$\pm 0.0021$ & +0.7629$\pm 0.0077$\\  
$\eta$ & 17.65$\pm 0.11$ & 13.00$\pm 0.46$\\
$I_0$ & 145.07$\pm 0.79$ & 152.01$\pm 0.56$\\
$\phi_0$ & 284.46$\pm 2.19$ & 317.34$\pm 3.36$\\
$f_p$ & +0.5293$\pm 0.0137$ & +0.7464$\pm 0.0189$\\
$s$ & +0.1861$\pm 0.0066$ & +0.2445$\pm 0.0120$\\
$\tau$ & -- & --7.75$\pm 0.84$\\
rms & $1''$53 & $1''$53\\ 
\hline 
\end{tabular} }
\smallskip
Notes: $A_{\rm I}$ and $A_{\rm II}$ are in $10^{-8}$ AU/day$^2$, the angular parameters $\eta$, $I_0$ and $\phi_0$ are in degrees, $f_{\rm p}$ is in
$10^6$ day/AU, $s$ and $\tau$ are in days. $A_{\rm I}$ was applied before 
and $A_{\rm II}$ after 1971.
\end{table}