\begin{table} %t4
\caption{Best-fitting photometric parameters. These solution have been obtained
by fitting the \wire\ and Hipparcos light curve as well as the spectroscopic light ratio
of NJ94 and several times of minimum light. Times are expressed in HJD $-$ 2~400~000.}
\label{tab:lcfit} \small%\centering
$$
\begin{tabular}{l l r@{~$\pm$~}l r@{~$\pm$~}l r@{~$\pm$~}l} \hline \hline
\multicolumn{8}{l}{\it Results using individual LD~coefficients for each star} \\
                           &                   &   \mc{Linear LD~law}    & \mc{Square-root LD~law} &  \mc{Quadratic LD~law}  \\
\hline
Sum of the relative radii  & $r_{\rm A}+r_{\rm B}$ &   0.30174   & 0.00007   &   0.30297   & 0.00036   &   0.30290   & 0.00047   \\
Ratio of the radii         & $k$               &   0.9289    & 0.0083    &   0.9311    & 0.0083    &   0.9300    & 0.0084    \\
Surface brightness ratio   & $J$               &   0.9883    & 0.0028    &   0.9812    & 0.0091    &   0.9856    & 0.0126    \\
Orbital inclination (deg) & $i$               &  76.862     & 0.004     &  76.809     & 0.015     &  76.803     & 0.020     \\
Eccentricity term          & $e\cos\omega$     &$-$0.000017  & 0.000006  &$-$0.000016  & 0.000006  &$-$0.000015  & 0.000006  \\
Eccentricity term          & $e\sin\omega$     &   0.00191   & 0.00032   &   0.00173   & 0.00036   &   0.00183   & 0.00035   \\
Orbital period (days)      & $P_{\rm orb}$     &   3.96004673& 0.00000015&   3.96004673& 0.00000015&   3.96004673& 0.00000015\\
Time of primary minimum    & $T_{\rm Min~I}$  &52827.195695 & 0.000011  &52827.195693 & 0.000011  &52827.195693 & 0.000011  \\
Linear LD~coefficient      & $u_{\rm A}$       &   0.382     & 0.006     &$-$0.056     & 0.147     &   0.210     & 0.064     \\
Linear LD~coefficient      & $u_{\rm B}$       &   0.379     & 0.006     &$-$0.177     & 0.148     &   0.187     & 0.060     \\
Non-linear LD~coefficient  & $v_{\rm A}$       &         \mc{\ }         &   0.703     & 0.232     &   0.248     & 0.096     \\
Non-linear LD~coefficient  & $v_{\rm B}$       &         \mc{\ }         &   0.881     & 0.236     &   0.277     & 0.094     \\
\hline
Relative radius of star A  & $r_{\rm A}$       &   0.15643   & 0.00065   &   0.15689   & 0.00068   &   0.15694   & 0.00070   \\
Relative radius of star B  & $r_{\rm B}$       &   0.14531   & 0.00069   &   0.14608   & 0.00072   &   0.14595   & 0.00074   \\
Light ratio      & $\ell_{\rm B}/\ell_{\rm A}$ &   0.853     & 0.016     &   0.855     & 0.016     &   0.854     & 0.016     \\
Orbital eccentricity       & $e$               &   0.00191   & 0.00032   &   0.00173   & 0.00036   &   0.00183   & 0.00035   \\
Periastron longitude (deg)& $\omega$          &  90.51      & 0.21      &  90.51      & 0.25      &  90.47      & 0.23      \\
Reduced $\chi^2$        & $\chi^2_{\rm \ red}$ &        \mc{1.332}       &         \mc{1.328}      &        \mc{1.327}        \\
\noalign{\smallskip}
\hline \\ \hline \hline
\multicolumn{8}{l}{\it Results using the same LD~coefficients for the two stars} \\
                           &                   &    \mc{Linear LD~law}    &  \mc{Square-root LD~law} &   \mc{Quadratic LD~law}  \\
\hline
Sum of the relative radii  & $r_{\rm A}+r_{\rm B}$ &   0.30174   & 0.00005   &   0.30267   & 0.00039   &   0.30295   & 0.00051   \\
Ratio of the radii         & $k$               &   0.9291    & 0.0081    &   0.9292    & 0.0083    &   0.9295    & 0.0083    \\
Surface brightness ratio   & $J$               &   0.9889    & 0.0027    &   0.9904    & 0.0027    &   0.9908    & 0.0026    \\
Orbital inclination (deg) & $i$               &   76.862    & 0.012     &  76.821     & 0.016     &  76.800     & 0.022     \\
Eccentricity term          & $e\cos\omega$     &$-$0.000017  & 0.000006  &$-$0.000016  & 0.000006  &$-$0.000015  & 0.000006  \\
Eccentricity term          & $e\sin\omega$     &   0.00178   & 0.00026   &   0.00198   & 0.00027   &   0.00201   & 0.00026   \\
Orbital period (days)      & $P_{\rm orb}$     &   3.96004673& 0.00000015&   3.96004673& 0.00000015&   3.96004673& 0.00000015\\
Time of primary minimum    & $T_{\rm Min~I}$  &52827.195695 & 0.000011  &52827.195694 & 0.000011  &52827.195693 & 0.000011  \\
Linear LD~coefficient      & $u$               &   0.380     & 0.017     &   0.049     & 0.138     &   0.191     & 0.062     \\
Non-linear LD~coefficient  & $v$               &         \mc{\ }         &   0.597     & 0.223     &   0.273     & 0.098     \\
\hline
Relative radius of star A  & $r_{\rm A}$       &   0.15642   & 0.00065   &   0.15689   & 0.00066   &   0.15701   & 0.00068   \\
Relative radius of star B  & $r_{\rm B}$       &   0.14533   & 0.00075   &   0.14578   & 0.00073   &   0.14594   & 0.00076   \\
Light ratio       &$\ell_{\rm B}/\ell_{\rm A}$ &   0.853     & 0.016     &   0.854     & 0.016     &   0.855     & 0.016     \\
Orbital eccentricity       & $e$               &   0.00178   & 0.00026   &   0.00198   & 0.00027   &   0.00201   & 0.00026   \\
Periastron longitude (deg)& $\omega$          &  90.55      & 0.22      &  90.46      & 0.20      &  90.43      & 0.19      \\
Reduced $\chi^2$        & $\chi^2_{\rm \ red}$ &        \mc{1.332}       &         \mc{1.328}      &        \mc{1.327}        \\ 
\hline \end{tabular}
$$ 
\end{table}