\begin{table}%t2 \caption{\label{tab:target_param}Physical parameters of SAO~51891 derived in this work.} %\centering \par \begin{tabular}{ll} \hline\hline Parameter & Value \\ \hline Spectral type & K0-1 $\pm$ 1~V \\ $(B-V)_0$ & 0.785 $\pm$ 0.014 \\ $V_0$ & $8\fm485\pm0\fm010$ \\ $A_{V}$ & 0.017\\ $P_{\rm rot}$ & 2.62 $\pm$ 0.45 days \\ $L$ & $0.215\pm0.075~L_\odot$ \\ $[$Fe/H$]$ & 0.28 $\pm$ 0.05\\ $\log g^{\rm SED}$ & 4.0 $\pm$ 0.1 \\ $\log g^{\rm SPEC}$ & 4.3 $\pm$ 0.1 \\[0.8mm] $T_{\rm eff}^{\rm SED}$ & 5420 $\pm$ 150 K \\[0.8mm] $T_{\rm eff}^{\rm SPEC}$ & 5350 $\pm$ 100 K \\[0.8mm] $T_{\rm eff}^{\rm LDR}$ & 5249 $\pm$ 70 K \\ $v\sin i$ & 19.0 $\pm$ 0.5 km~s$^{-1}$ \\ $R\sin i$ & $0.8\pm0.1~R_\odot$ \\ $i$ & 75${\degr}$ $\pm$ 15${\degr}$ \\ $M$ & $0.8\pm0.2~M_\odot$ \\ $EW_{\rm \ion{Li}{i}}$ & 260 $\pm$ 10 m\AA \\ $V_{\rm rad}$ & $-$19.67 $\pm$ 0.24 km~s$^{-1}$ \\ $U_{\odot}$ & $+5.68$ $\pm$ 1.46 km~s$^{-1}$ \\ $V_{\odot}$ & $-21.32$ $\pm$ 0.46 km~s$^{-1}$ \\ $W_{\odot}$ & $-3.05$ $\pm$ 1.01 km~s$^{-1}$ \\ Age & $\la$100 Myr \\ \hline \end{tabular} \end{table}