\begin{table}%t1
\caption{The orbit parameters and the fundamental parameters of CoRoT-Exo-4b and its host star.}
\label{tab:param}  
\small%\centering
\par
\begin{tabular}{llll}
\hline\hline\noalign{\smallskip}
$V_0$ [\kms]        & $32.301   \pm 0.005     $&  $K$ [\ms]           & $63      \pm 6         $ \\
$e$                 & $0.0       \pm 0.1       $ & $a$ [AU]            & $0.090  \pm 0.001    $ \\ 
$P$ [d] & 9.20205 $\pm$ 0.00037& & \\ 
$M_{\rm p}$ [\Mjup]       & $0.72    \pm 0.08       $ &  $R_{\rm p}$ [\Rjup]       & $\rm 1.190_{-0.05}^{+0.06}$ \\
$\rho_{\rm p}$ [g/cm$^3$] & $0.525   \pm 0.15      $ & $T_{\rm eq}$ [K]    & $1.074    \pm 19       $ \\
$M_{\rm s}$ [\Msun]       & $\rm 1.16_{-0.02}^{+0.03}  $ & $R_{\rm s}$ [\Rsun]       & $\rm 1.17_{-0.03}^{+0.01}  $ \\
$v\sin i$ [\kms]    & $6.4     \pm 1.0       $ & $T_{\rm eff}$ [K]   & $6190    \pm 60        $ \\
$\log g$            & $4.41    \pm 0.05      $ & Age  [Gy] &  $\rm 1_{-0.3}^{1.0}$\\ 
 \hline
\end{tabular}
 \end{table}