\begin{table}%t1
%\centering
\par
\caption{Present parameters of the  Uranian irregulars and orbital damping due
to  gas drag  exerted by  Uranus  extended envelope.   $r_{\rm s}$ and  $a$ are  the
present physical  radius and the  present orbital semiaxis of  the irregulars. $e_{\rm mean}$ is their calculated mean  eccentricity tabulated in Table~\ref{eccentricity}.  $a_{\rm i}$ and $e_{\rm i}$ are the orbital semiaxis and eccentricity just after the GC, while $(\Delta{a})/a_{\rm i})$  and $(\Delta{e}/e_{\rm i})$  are  the damping  of these  orbital elements  since the  epoch  of the  GC  until the  contraction  of the  Uranus envelope.}  \label{damping} 
%\centering
\par
\begin{tabular}{crrlclll} \hline \hline\noalign{\smallskip}
Satellite  &  $r_{\rm s}{\rm [km]}$ &  $a[R_{\rm U}]$  & $e_{\rm mean}$  &  $a_{\rm i}[R_{\rm U}]$  & $e_{\rm i}$  &
$(\Delta{a})/a_{\rm i})$ & $(\Delta{e}/e_{\rm i})$\\
\hline\noalign{\smallskip}
Caliban&      49 &  283 & 0.191  & 287.5 & 0.1973 & $1.602 \times 10^{-2}$ &
 $3.289 \times 10^{-2}$
\\
Sycorax &     95 &  482 & 0.541 & 485   & 0.5436 & $6.307 \times 10^{-3}$ &
 $4.795 \times 10^{-3}$
\\ 
Prospero &     15 &  645 & 0.432  & 648   & 0.4342 & $4.585 \times 10^{-3}$  &
 $4.997\times 10^{-3}$
\\
Setebos &     15 &  694 & 0.581  & 701.8 & 0.5853 & $1.123 \times 10^{-2}$ &
 $7.366 \times 10^{-3}$
\\ 
Stephano &     10 &  314 & 0.251  & 333   & 0.2781 & $6.058 \times 10^{-2}$ &
 0.1080
\\ 
Trinculo &     5  &  336 & 0.218  & 361.6 & 0.2501 & $7.623 \times 10^{-2}$ &
 0.1475\\ 
Ferdinand &     6  &  813 & 0.660  & 839.3 & 0.6701 & $3.241 \times 10^{-2}$ &
 $1.533 \times 10^{-2}$\\ 
Francisco &     6  &  169 & 0.142  & 280.6 & 0.3593 & 0.6604    & 1.530\\ 
Margaret &  5.5& 579 & 0.633  & 649 & 0.6705  & 0.1209 & $5.917  \times 10^{-2}$ \\
\hline 
\end{tabular}
\end{table}