\begin{table}%t3 %\centering \par \caption{\label{paramtable} Parameters of HD~186753B and TYC7096-222-1B and their orbits.} % use packages: array %\centerline {\begin{tabular}{llll} \hline\hline Parameter & HD~186753B & TYC7096-222-1B ($e=0.00$) & TYC7096-222-1B ($e=0.75$) \\ \hline \noalign{\smallskip} Eclipse epoch (HJD) & $3940.40144^{\rm +0.00091}_{-0.00081}$ & $4373.01637^{\rm +0.00066}_{-0.00087}$ & -- \\ Orbital period (days) & $1.9193851^{\rm +0.0000412}_{-0.0000393}$ & $8.9582591^{\rm +0.0000346}_{-0.0000314}$ & -- \\ Eclipse duration (days) & $0.1662^{\rm +0.0038}_{-0.0031}$ & $0.2430^{\rm +0.0039}_{-0.0042}$ & -- \\ Secondary/primary area ratio, $(R_{2}/R_{1})^2$ & $0.0148^{\rm +0.0005}_{-0.0003}$ & $0.0251^{\rm +0.0006}_{-0.0005}$ & -- \\ Impact parameter, $b (R_{*})$ & $0.264^{\rm +0.191}_{-0.154}$ & $0.250^{\rm +0.157}_{-0.142}$ & -- \\ Stellar reflex vel., $\rm{K_{1}}$ ($\rm{km\ s^{-1}}$) & $-27.449\pm1.751$ & $-20.341\pm2.974$ & $-58.432\pm6.122$ \\ Centre-of-mass vel., $\gamma$ ($\rm{km\ s^{-1}}$) & $-14.641\pm2.980$ & $4.074\pm1.533$ & $8.776\pm0.748$ \\ Orbital separation, $a$ (AU) & $0.0370^{\rm +0.0012}_{-0.0013}$ & $0.0990^{\rm +0.0031}_{-0.0034}$ & -- \\ Orbital inclination, $i$ (deg) & $87.09^{\rm +1.69}_{-1.79}$ & $89.00^{\rm +0.57}_{-0.73}$ & -- \\ Orbital eccentricity, $e$ & $0.269\pm0.087$ & (fixed = 0.00) & (fixed = 0.75) \\ Longitude of periastron, $\omega$ (deg) & $166.7\pm5.9$ & (not fitted) & $167.2\pm61$ \\ Stellar Mass, $M_{2}(M_{\odot})$ & $0.236\pm0.017$ & $0.286\pm0.019$ & $0.544\pm0.057$ \\ Stellar Radius, $R_{2}(R_{\odot})$ & $0.307^{\rm +0.057}_{-0.057}$ & $0.263^{\rm +0.020}_{-0.071}$ & -- \\ Luminosity ratio, $L_{1}/L_{2}$ & $979.7$ & $520.4$ & $361.9$ \\ \hline \end{tabular}} \medskip The parameters of TYC7096-222-1B determined from the photometry are the same for both eccentricities. \end{table}