\begin{table}%t1 \par \caption{\label{tab1}CoRoT-2 system parameters and 1-$\sigma$ error limits derived from our MCMC analysis.} \small%\centering \par \begin{tabular}{lccccl} \hline\hline \noalign {\smallskip} Parameter & This study & A08/B08 & Unit &\\ \hline $Jump$ $parameters$ & & & \\ \noalign {\smallskip} Planet/star area ratio $ (R_{\rm p}/R_{\rm s})^2 $ & $0.02750 \pm 0.00012$ & $0.02779 \pm 0.00020$ [A08]& \\ $ b'=a\cos{i}/R_\ast $ & $ 0.223^{\rm + 0.018}_{- 0.020} $ &$0.253 \pm 0.012$ [A08] & $R_*$ \\ Transit width $W$ & $ 0.09446^{\rm +0.00011}_{-0.00010}$ & -- & days \\ $e\cos{\omega}$ & $-0.00291^{\rm +0.00063}_{-0.00061}$ & 0 (fixed) [A08 \& B08] & \\ $e\sin{\omega}$ & $0.0139^{\rm +0.0079}_{-0.0084}$ & 0 (fixed) [A08 \& B08] & \\ $V\sin{I}\cos{\beta}$ & $10.79^{\rm +0.33}_{-0.32}$ & $11.76 \pm 0.51$ [B08] & \\ $V\sin{I}\sin{\beta}$ & $-0.8^{\rm +1.2}_{-1.1}$ & $-1.48 \pm 0.93$ [B08] & \\ 4.5~$\mu$m ${\rm d}F_2$ & $0.00510^{\rm +0.00041}_{-0.00040} $ & -- & \\ 8~$\mu$m ${\rm d}F_2$ & $0.0041 \pm 0.0011$ & -- & \\ RV $K_2$ & $725 \pm 22$ & $678 \pm 17 $ [A08] & \\ \noalign {\smallskip} \tablefootmark{*}Transit epoch $ T_0$ & $ 2~454~237.53556^{\rm +0.00020}_{-0.00021}$ & 2~454~237.53562 $\pm$ 0.00014 [A08] & HJD \\ \tablefootmark{*}Orbital period $ P$ & $ 1.7429935 \pm 0.0000010$ & 1.7429964 $\pm$ 0.0000017 [A08] & days \\ \tablefootmark{*}$c_1$ & $ 0.911 \pm 0.016$ & $0.88 \pm 0.07 $ [A08] & \\ \tablefootmark{*}$c_2$ & $ -0.094 \pm 0.078$ & $0.29 \pm 0.07$ [A08] & \\ \noalign {\smallskip} {\it Deduced} {\it parameters} & & & \\ \noalign {\smallskip} $^*$$V\sin{I}$ & $10.87 \pm 0.32$ & $11.85 \pm 0.50$ [B08] & \kms \\ $\beta$ & $-4.0^{\rm +6.1}_{-5.9}$ &$-7.2 \pm 4.5$ [B08]& degrees \\ RV $K$ & $ 603 \pm 18 $ & 563 $\pm$ 14 [A08] & \ms \\ $b_{\rm transit}$ & $ 0.221 ^{\rm + 0.017}_{- 0.019}$ & $0.253 \pm 0.012$ [A08] & $R_*$ \\ $b_{\rm occultation}$ & $ 0.226^{\rm + 0.018}_{- 0.020} $ & $0.253 \pm 0.012$ [A08] & $R_*$ \\ $T_{\rm occultation}$ & $ 2~454~238.40380 ^{\rm +0.00071}_{-0.00068}$ & 2~454~238.40712 $\pm$ 0.00014 [A08] & HJD \\ Orbital semi-major axis $ a $ & $ 0.02798^{\rm + 0.00076}_{- 0.00080} $ & $0.0281 \pm 0.0009$ [A08] & AU \\ Orbital inclination $ i $ & $ 88.08^{\rm +0.18 }_{-0.16} $ & 87.84 $\pm$ 0.1 [A08] & degrees \\ Orbital eccentricity $ e $ & $ 0.0143^{\rm +0.0077}_{-0.0076} $ & 0 [fixed, A08 \& B08]& \\ Argument of periastron $ \omega $ & $102^{\rm +17}_{-5}$ & -- & degrees \\ Stellar mass $M_\ast $ & $ 0.96 \pm 0.08$ & 0.97 $\pm$ 0.06 [A08] & $M_\odot$ \\ Stellar radius $ R_\ast $ & $ 0.906^{\rm + 0.026}_{- 0.027} $ & 0.902 $\pm$ 0.018 [A08] & $R_\odot$ \\ Stellar density $\rho_* $ & $1.288^{\rm + 0.035}_{- 0.033} $ & $1.327 \pm 0.006$ [A08] & $\rho_\odot $\\ $u_1$ & $ 0.346^{\rm + 0.014}_{- 0.015}$ & $0.41 \pm 0.03$ [A08] & \\ $u_2$ & $ 0.220 \pm 0.032$ & $0.06 \pm 0.03$ [A08] & \\ Planet mass $ M_{\rm p} $ & $ 3.47 \pm 0.22 $ & 3.31 $\pm$ 0.16 [A08] & $M_J$ \\ Planet radius $ R_{\rm p} $ & $ 1.466 ^{\rm + 0.042}_{- 0.044} $ & 1.465 $\pm$ 0.029 [A08] & $R_J$ \\ Planet density $ \rho_{\rm p} $ & $1.105^{\rm +0.060}_{+0.056}$ & $1.05 \pm 0.08$ [A08]& $\rho_{J}$ \\ \hline \end{tabular} \tablefoot{\tablefoottext{*}{A Bayesian penalty was used for the parameters preceded by an asterisk.}} \vspace*{3mm} \end{table}