\begin{table}%t2
%\centering
\par
\caption{Orbital and physical parameters for the planets presented in
this paper. For HD~63454, $^a$ relates to {\sc harps} measurements, $^b$ to
{\sc coralie} measurements;  Col.~"{\sc harps}$+${\sc coralie}'' shows
  the combined orbital solution, while Col.~"{\sc harps} alone'' shows the orbital solution using
{\sc harps} measurements alone. $\sigma$(O--C) is the residual noise after orbital fitting of the combined set of measurements.\label{TablePlanets}}
\begin{tabular}{l l c c c c}
\hline\hline
\multicolumn{2}{l}{\bf Parameter}
&   HD~2638~b &   HD~27894~b &   HD~63454~b &   HD~63454~b \\
&&&&{\sc harps}$+${\sc coralie}&{\sc harps} alone \\
\hline
$P$ & [days] & 3.4442 $\pm$ 0.0002 
             & 17.991 $\pm$ 0.007 
             & 2.817822 $\pm$ 0.000095 &  2.817~596 $\pm$ 0.00015\\
$T$ & [JD-2~400~000] & 53~323.206 $\pm$ 0.002  
                   & 53~275.46  $\pm$ 0.48 
                   & 53~111.129 $\pm$ 0.005  &53~111.148 $\pm$ 0.011\\
$e$ & & 0.0 & 0.049 $\pm$ 0.008  & 0.0  &0.0  \\
$V$ & [km s$^{-1}$] & 9.6279 $\pm$ 0.0003 
                    &82.9023 $\pm$ 0.0003 
                    &33.8411 $\pm$ 0.0006 &33.8405 $\pm$ 0.0005 \\
$\omega$ & [deg] & 0.0 & 132.9 $\pm$ 9.7 & 0.0 &0.0 \\
$K$ & [m s$^{-1}$] & 67.4 $\pm$ 0.4 
                   & 58.1 $\pm$ 0.5 
                   & 64.3 $\pm$ 0.7 &64.4 $\pm$ 0.6 \\
$a_1 \sin{i}$ & [10$^{-4}$ AU] & 0.2133 & 0.9601 & 0.1664 &0.1669 \\
$f(m)$ & [10$^{-9} $~$M_{\odot}$] & 0.1092 & 0.3648 & 0.0775 & 0.07815 \\
$m_2 \sin{i}$ & [$M_{{\rm Jup}}$] & 0.48 & 0.62 & 0.38 & 0.38\\
$a$ & [AU] & 0.044 & 0.122 & 0.036 &0.036 \\
\hline
$N_{{\rm meas}}$ & & 28  & 20  & $26^a+31^b$ &26 \\
$Span$ & [days]       & 401 & 403 & $330^a+57^b$ &330 \\
$\sigma$ (O--C) & [m s$^{-1}$] & 3.3 & 4.0 & 7.1 &6.5 \\
\hline
\end{tabular}
\end{table}