\begin{table}%t3
\caption{\label{table3}Summary of measured and estimated (E) parameters for knots A \& B.} 
%\centering
\par
\begin{tabular}{c c c} % 
\hline\hline
\noalign{\smallskip}
Parameter name & knot A & knot B  \\
\hline 
Redshift & $z=0.0042\pm0.0001$ &  $=$ \\
Heliocentric distance & $D=17\pm2$ Mpc & $=$\\
Integrated V magnitude & $m_{v}=19.9\pm0.1$ mag & $m_{v}=20.4\pm0.1$ mag\\
Nucleus V magnitude & $m_{v_{\rm nuc}}=21.4\pm0.1$ mag & --\\
Absolute magnitude & $M_{V}=-11.2\pm0.1$ mag & $M_{V}=-10.8\pm0.1$ mag\\
Half light radius & $R_{\rm e}=336\pm84$ pc & $R_{\rm e}=482\pm84$ pc\\
Central surface brightness & $\mu_{A,0} = 24.6\pm0.2$ mag arcsec$^{-2}$ & $\mu_{B,0} = 25.1\pm0.2$ mag arcsec$^{-2}$\\   
S\'ersic index & $n=0.6\pm0.1$ & $n=0.4\pm0.1$\\
Predominant stellar type & G & =\\
Stellar mass & $M_{*}\approx6~\times~10^6 ~M_{\odot}$ & $M_{*}\approx4~\times~10^6~M_{\odot}$\\
\hline 
\end{tabular}
\end{table}