\begin{table}%T1
\caption{\label{param}Fitted and derived parameters for the HD~17156 system, host star and transiting planet. See Sect.~4.2. for a description of the fitted parameters.} 
\par
\small%\centerline
{
\begin{tabular}{ll} \hline \hline 
{MCMC fitted parameters}  & \\
$D$                           &  $0.00605^{\rm +0.00041}_{-0.00051}$      \\
$K$ [m~s$^{-1}$]     &  $272.6^{\rm + 4.5}_{-4.2}$ \\
$b$                            & $0.591^{\rm + 0.088}_{-0.191}$      \\
$W$ [phase]            & $0.00626^{\rm + 0.00015}_{-0.00016}$      \\
$P$ [days]                & $21.21747^{\rm + 0.00070}_{-0.00067}$    \\
$T_{\rm tr}$ [BJD]            & $2\,454\,438.48271^{\rm +0.00077}_{-0.00057}$      \\
$e$                            & $0.6719^{\rm + 0.0052}_{-0.0063}$       \\
$\omega_0$ [$^\circ$] & $121.14^{\rm + 0.76}_{-0.89}$\\ 
%& \\
{Deduced transit parameters}  & \\
 $p$ = $R_{\rm p}/R_{\star}$        & $0.0777^{\rm + 0.0026}_{-0.0034}$\\
 $r_{\star} = R_{\star} /a$  & $0.0476^{\rm + 0.0045}_{-0.0058}$\\
 $r_{\rm p} = R_{\rm p} /a$           & $0.00371^{\rm + 0.00047}_{-0.00059}$\\
%& \\
{Deduced stellar radius$^\ast$} & \\
 $R_{\star}$ [$R_\odot$] &  $1.63^{\rm + 0.17}_{-0.20}$\\
%& \\
{Deduced planetary parameters}  & \\
 $M_{\rm p}$ [$M_{\rm Jup}$]& $3.09^{\rm + 0.22}_{-0.17}$ \\
 $R_{\rm p}$ [$R_{\rm Jup}$]&  $1.23 ^{\rm + 0.17}_{-0.20}$ \\
 $\rho_{\rm p}$ [$\rho_{\rm Jup}$]&   $1.66^{\rm +1.37}_{-0.60}$ \\
%& \\
{Deduced orbital parameters}&\\
 $a$ [AU] & $0.1589^{\rm + 0.0054}_{-0.0044}$\\
 $i$ [$^\circ$] & $85.4^{\rm + 1.9}_{-1.2}$\\
%\\
 Probability of secondary eclipse & $0.04039 \%$\\
\hline 
\end{tabular}}
\smallskip
$^\ast$ The value for the stellar mass was kept fixed to the one presented\\ in Fischer et~al. (\cite{Fischer2007}): $1.2 \pm 0.1~M_\odot$.
\end{table}