\begin{table}%t4
  \caption{\label{tab:orbitalelements}Orbital elements as determined with the algorithm from 
    \citet{doc85} and our grid search algorithm (described in
    Sect.~\ref{sec:orbitsolution}).
  }
%\centerline
 {
\begin{tabular}{ll|cc}
  \hline\hline
                         &         & Docobo          & Grid search \\
  Parameter              &         & algorithm       & algorithm \\
  \hline
  $P$                    & [yrs]   & $11.05 \pm 0.03$      & $11.26 \pm 0.5$    \\
  $T_{0}$                &         & $2002.87 \pm 0.40$    & $2002.57 \pm 0.5$ \\
  $e$                    &         & $0.534 \pm 0.050$     & $0.592 \pm 0.07$   \\
  $a$                    & [mas]   & $40.00 \pm 3.00$      & $43.61 \pm 3$    \\
  $i$                    & [\degr] & $100.7 \pm 1.0$       & $99.0 \pm 2.6$    \\
  $\Omega$               & [\degr] & $25.3 \pm 1.5$        & $26.5 \pm 1.7$     \\
  $\omega$               & [\degr] & $290.9 \pm 2.5$       & $285.8 \pm 8.5$     \\
  $\chi^2_r$              &         & 1.84                 & 0.56 \\%[-3.2mm]\\
  \hline%\\[-3.2mm]
  $a^{3}/P^{2}$           & [mas$^3$/yrs$^2$] & $524 \pm 130$    & $645 \pm 200$ \\
  $M_{\rm C1}/M_{\rm C2}$  &                   & $0.21 \pm 0.05$  & $0.23 \pm 0.05$ \\
  $M_{\rm C1}+M_{\rm C2}$  & [$M_{\odot}$]       & $49 \pm 4$       & $47 \pm 4$  \\
  $d_{\rm dyn}$           & [pc]              & $456 \pm 13$     & $416 \pm 12$   \\
  \hline
\end{tabular}}
\par
\medskip
{Notes}. Besides the orbital elements, we give the 
    mass ratio (Sect.~\ref{sec:massratio}), 
    dynamical distance, and system mass (Sect.~\ref{sec:dynmassparallax}),
    derived from both set of orbit elements.
    The dynamical distance and system mass was determined using the
    method from \citet[][method~{\it c} in Sect.~\ref{sec:dynmassparallax}]{bai46} and three different MLRs.
    When assuming another distance~$d^{\prime}$, the dynamical 
    system mass $M_{\rm C1}+M_{\rm C2}$ must be scaled by a factor $(d^{\prime}/d_{\rm dyn})^3$.
    The mass ratio $M_{\rm C1}/M_{\rm C2}$ was also computed for the distance $d_{\rm dyn}$,
    but can be converted to any other distance using Eq.~(\ref{eqn:massratio}).
\end{table}