\begin{table}%t5 \caption{Star and planet characteristics of the CoRoT-8 system.} %\centering \par \begin{tabular}{l c} \hline\hline\noalign{\smallskip} %\multicolumn{2}{l}{\textbf{Star identifiers}} \\ CoRoT-ID & 0101086161 \\ CoRoT-WinID & LRc01-E2-1145 \\ GSC 2.3 & N29S083644 \\ Coordinates (J2000) & 19:26:21.245 +01:25:35.55 \\ Magnitudes $B$, $V$, $r'$, $i'$ & 16.10, 14.80, 14.27, 13.41 \\ % \multicolumn{2}{l}{{Results from light-curve analysis}} \\ Planet period, $P$ & $6.21229 \pm 0.00003$ days \\ Transit epoch, $T_0$ & HJD $2~454~238.9743 \pm 0.0004$ \\ Transit duration, $T_{14}$ & $2.74 \pm 0.02$~h \\ Transit relative depth, $\delta$ & $(6.51 \pm 0.07)\times 10^{-3}$ \\ Radius ratio, $R_{\rm p}/R_\star$ & $0.075 \pm 0.001$ \\ Scaled semi-major axis, $a/R_\star$ & $17.6 \pm 0.4$ \\ Orbital inclination, $i$ & $88.4 \pm 0.1$\degr \\ Impact parameter, $b$ & $0.49 \pm 0.04$ \\ Limb-darkening coefficients, $u_1$, $u_2$ & $0.70 \pm 0.09$, $0.14 \pm 0.09$ \\ Stellar density, $\rho_\star$ & $2.7 \pm 0.1$~\gcm \\ $M_\star^{1/3}/R_\star$ & $1.24 \pm 0.03$ (solar units) \\ % \multicolumn{2}{l}{{Results from radial velocity observations}} \\ Radial velocity semi-amplitude, $K$ & $26 \pm 4$~\ms \\ Orbital eccentricity, $e$ & 0 (fixed) \\ Systemic radial velocity & $-37.468 \pm 0.003$~\kms \\ %Mass function, $f$ & $\pm$ \\ % \multicolumn{2}{l}{{Results from spectral typing}} \\ Spectral type & K1V \\ Effective temperature, $T_{\rm eff}$ & $5080 \pm 80$~K \\ Surface gravity, $\log g$ & $4.58 \pm 0.08$ (cgs) \\ Metallicity, $[{\rm M}/{\rm H}]$ & $0.3 \pm 0.1$ \\ Micro-turbulent velocity, $v_{\rm mic}$ & $0.8 \pm 0.2$~\kms \\ Macro-turbulent velocity, $v_{\rm mac}$ & $2 \pm 1$~\kms \\ Rotational velocity, $v \sin i$ & $2 \pm 1$~\kms \\ %Rotational period & $\pm$~days \\ Star mass, $M_\star$ & $0.88 \pm 0.04 \: {M}_\odot$ \\ Star radius, $R_\star$ & $0.77 \pm 0.02 \: {R}_\odot$ \\ Star age & $\le$$3$~Ga \\ Star distance & $380 \pm 30$~pc \\ % \multicolumn{2}{l}{{Absolute physical parameters from combined analysis}} \\ Planet mass, $M_{\rm p}$ & $0.22 \pm 0.03$~\Mjup \\ Planet radius, $R_{\rm p}$ & $0.57 \pm 0.02$~\Rjup \\ Planet density, $\rho_{\rm p}$ & $1.6 \pm 0.1$~\gcm \\ Planet orbital semi-major axis, $a$ & $0.063 \pm 0.001$~AU \\ \hline \end{tabular} \label{tab:param} \end{table}