\begin{table}%t3 \caption {\label{korel}KOREL disentangling orbital solutions for the three combined blue spectral regions near some stronger spectral lines useful for determination of atmospheric parameters, and for the red spectral region near the \ion{He}{i}~5876~\ANG~line. } %\centerline {\begin{tabular}{rrrrrrlll} \hline\hline Element&Three blue regions&\ion{He}{i} 5876\\ \hline $T_{\rm periast.}$ &0.69173&0.69037\\ $K_1$(\ks) &106.983&106.956\\ $K_2$(\ks) &159.39&161.64\\ $K_1/K_2$ &0.6712&0.6617\\ \hline \end{tabular}} \par \smallskip The period, eccentricity and longitude of periastron were kept fixed at the values of 3\fd65705, 0.29394, and 51\fdg31, respectively. The epoch of the periastron passage $T_{\rm periast.}$ is tabulated in HJD$-$2~454~628. \end{table}