\begin{table}%t2
\caption{Precession, orbital and flare properties of the BBH~system in
  3C~345.}\label{tb:bestfit}
%\centering
\par
\begin{tabular}{llr}
\hline\hline
\multicolumn{3}{c}{Geometrical parameters} \\ 
\hline
Viewing angle of the jet & $\iota$ & $6.5\degr$ \\
Position angle of the jet in the plane of the sky & $\Psi_{{\rm proj}}$ &
$-95\degr$ \\
Opening half-angle of precession cone & $\Omega_{\rm p}$ & $1.45\degr$ \\
Precession period of accretion disk &$T_{\rm p}$ & 2570~yr \\ 
Characteristic dampening (comoving) timescale of perturbation &$t_{{\rm beam}}$ & 180~yr \\
Maximum perturbation amplitude &$R_0$  & 1~pc \\
\hline
\multicolumn{3}{c}{Kinematic parameters} \\ 
\hline
Alfv\'en speed &$V_{\rm A}$ & $0.078~c$ \\ 
Initial Lorentz factor of radio emitting plasma &$\Gamma_{{\rm min,r}}$ & 3.5 \\
Initial Lorentz factor of optically emitting plasma &$\Gamma_{{\rm min,o}}$ & 12 \\
Terminal Lorentz factor of jet plasma &$\Gamma_{{\rm max}}$ & 20 \\
Plasma acceleration (comoving) timescale &$t_{{\rm acc}}$ & 165~yr \\ 
\hline
\multicolumn{3}{c}{Parameters of the binary system} \\ 
\hline
Primary black hole mass &$M_1$ & $7.1\times 10^8~{M}_{\odot}$ \\
Secondary black hole mass &$M_2$ & $7.1\times 10^8~{M}_{\odot}$ \\
Orbital period &$T_{\rm o}$& 480~yr \\
Orbital separation &$r_{\rm o}$& 0.33~pc \\
Orbital eccentricity & $e$ & $<$$0.1$ \\
Characteristic rotational period of accretion disk &$T_{{\rm disk}}$&
240~yr \\ 
\hline
\multicolumn{3}{c}{Flare parameters and initial conditions} \\ 
\hline
Plasma injection epoch & $t_{{\rm inj}}$ & 1991.05 \\
Initial precession phase &$\phi_{\rm p}$& 100$\degr$ \\
Initial orbital phase &$\phi_{\rm o}$& 125$\degr$ \\ 
\hline
\end{tabular}
\end{table}