\begin{table}%t13 %%\centering \par \caption{\label{pyspar}Astrophysical parameters for the close binaries AH~Cnc and ES~Cnc.} \small \begin{tabular}{llllll} \hline\hline & & ~~~~~~~~~~~~~AH Cnc && ~~~~~~~~~~~~~ES Cnc &\\ Quantity &Unit&Pri. & Sec. &Pri. & Sec. \\ \hline Mass~($M$)& ${M_{\odot}}$ & $1.47~(15)$ & $0.25~(3)$ & $1.94~(13)$ & $1.50~(9)$\\ Radius~($R$) &${R_{\odot}}$ & $1.40~(9)$ & $0.68~(5)$ & $2.05~(7)$ & $1.47~(6)$ \\ Effective Temperature ($T_{\rm e}$) &$\rm{K}$ & $6300$ & $6275~(90)$ & $7325~ (50)$ & $5975~(200)$ \\ Luminosity($L$) &${L_{\odot}} $ & $2.78~(50)$ & $0.64~(11)$ & $10.8~(7)$ & $2.5~(6)$ \\ Surface Gravity ($log~g$) &cgs & 4.31 & 4.17 & 4.10 & 4.28 \\ Bolometric Magnitude ($M_{\rm bol}$) &mag & 3.64 &5.23 & 2.16& 3.77 \\ Visual Magnitude ($V$) & mag & 13.60 &15.19 & 12.05 & 13.80 \\ Absolute Magnitude ($M_{V}$) & mag & 3.80 & 5.39 & 2.25 & 3.95\\ Bolometric Correction (B.C.) &mag &--0.16 & --0.16 & --0.09 & --0.18 \\ Period Change Rate ($\dot{P}$) &d~yr$^{-1}$ & ~~~~~~~$+3.7 \times 10^{-7}$ & & ~~~~~~~ $+5.1 \times 10^{-10}$ & \\ Mass Transfer Rate ($\dot{M}$) &${M_{\odot}}$~yr$^{-1}$ & ~~~~~~~$+9.4 \times 10^{-8}$ & & & \\ Distance ($d$) &pc & & & ~~~~~~~~~~~~857(33) & \\ \hline \end{tabular} \end{table}