\begin{table}%t3
\caption{\label{table3}Geometrical parameters determined for six systems.}
%\centerline
 {\small
\begin{tabular}{ccccc}
\hline \hline
Transit      &         $r/R$                &          $a/R$          &         $b$            &  $u$ \\
\hline
\smallskip
OGLE-TR-106  & $0.1454^{\rm +0.0071}_{-0.0060}$ &  $13.3^{\rm +1.1}_{-2.1}$   & $0.35^{\rm +0.29}_{-0.35}$ & 0.6 \\
\smallskip
OGLE-TR-109  & $0.0771^{\rm +0.0037}_{-0.0029}$ &  $1.88^{\rm +0.12}_{-0.25}$ & $0.17^{\rm +0.48}_{-0.16}$ & 0.597$^*$ \\
\smallskip
OGLE-TR-111  & $0.1284^{\rm +0.0066}_{-0.0033}$ & $12.31^{\rm +0.74}_{-1.56}$ & $0.31^{\rm +0.25}_{-0.31}$ & 0.768$^*$ \\
\smallskip
OGLE-TR-113  & $0.1451^{\rm +0.0064}_{-0.0022}$ & $6.49^{\rm +0.10}_{-0.66}$  & $0.11^{\rm +0.35}_{-0.09}$ & 0.780$^*$ \\
\smallskip
OGLE-TR-159  &    $0.41^{\rm +0.03}_{-0.20}$    & $4.18^{\rm +0.24}_{-0.15}$  & $1.11^{\rm +0.05}_{-0.15}$ & 0.6 \\
\smallskip
OGLE-TR-170  &    $0.23^{\rm +0.19}_{-0.05}$    & $2.96^{\rm +0.19}_{-0.10}$  & $0.91^{\rm +0.26}_{-0.12}$ & 0.6 \\
\hline
\end{tabular}}
\medskip
 In the columns we provide: ratio of the radii of the components $r/R$, ratio of the radius of the orbit of the secondary to the radius of the primary,
impact parameter~$b$, and linear limb-darkening coefficient~$u$.
For objects OGLE-TR-109, OGLE-TR-111, and OGLE-TR-113 the limb-darkening
coefficient was taken from \cite{cla00}.
\end{table}