\begin{table}%t2[hbtp]
%\centering
\par
\caption{Photometric parameters of SAO 0822+3545.}
\label{tab:struct_par}
\begin{tabular}{cccc} \hline \hline
Band&  Total          &$r_{\rm eff}$&$SB_{\rm eff}$ \\
    &   mag           &    arcsec      &mag arcsec$^{-2}$ \\
    &   (1)           &     (2)        &     (3)          \\ \hline
$B$ & $17.56\pm0.05$  & 6.46~          &  23.60          \\
$V$ & $17.43\pm0.03$  & 6.43~          &  23.46          \\
$R$ & $17.26\pm0.05$  & 7.94~          &  23.75          \\
\hline
\end{tabular}
\end{table}