\begin{table}%t1
 %\centering
\par
  \caption {\label{tab1}Main orbital elements of WR~22 from the two
           most recent solutions.}
  \begin{tabular}{lcccc}
  \hline\hline
  &  \multicolumn{2}{c}{Rauw et~al.\ (\cite{rauw96})} & \multicolumn{2}{c}{Schweickhardt et~al.\ (\cite{schw99})} \\
  Parameter & Value & Std Deviation & Value & Std Deviation \\
  \hline
$P$ (days) & 80.325 & 0.010 & 80.336 & 0.0013 \\
$e$        & 0.559 & 0.013 & 0.598 & 0.010 \\
$\gamma_{{\rm WR}}$ (km~s$^{-1}$) & --29.8 & 1.0 & 0(adopted) & 15. \\
$\gamma_{{\rm O}}$ (km~s$^{-1}$) & +21.3 & 10.4 & 0(adopted) & 15. \\
$K_{{\rm WR}}$ (km~s$^{-1}$) & 72.3 & 1.48 & 70.6 & 0.8 \\
$K_{{\rm O}}$ (km~s$^{-1}$) & 201.4 & 14.8 & 190.0 & 10.0 \\
$\omega$ (degree) & 271.6 & 2.8 & 268.2 & 1.6 \\
$T_0$ (HJD~2400000+)\footnote{the time of periastron passage.}
& 49324.17 & 0.30 & 50127.47 & 0.14 \\
$a_{{\rm WR}} \sin i$ (10$^6$ km) & 66.3 & 1.5 & 62.5 & 0.9 \\
$a_{{\rm O}} \sin i$ (10$^6$ km) & 185.0 & 14.8 & 168.2 & 9.0 \\
$q = M_{{\rm WR}}/M_{{\rm O}}$ & 2.78 & 0.21 & 2.69 & 0.14 \\
$M_{{\rm WR}} \sin^3 i$ ($M_{\odot}$) & 71.7 & 11.0 & 55.3 & 7.3 \\
$M_{{\rm O}} \sin^3 i$  ($M_{\odot}$) & 25.7 & 2.3 & 20.6 & 1.7 \\
$T_{\rm eclipse}$ (HJD~2400000+) & 49324.09 & 0.30 & 50127.55 & 0.14 \\
\hline\\[-3mm]
$^1$ The time of periastron passage.
\end{tabular}
\end{table}