\begin{table}%t2
\caption{\label{tabps}Best-fit orbital solution for {\adc} derived from the analysis of
the eclipse arrival times from 1977 to 2008.}
%\centerline
{\small
\begin{tabular}{llrr}
\hline \hline
Parameter  & Units & P2000 & This work  \\
\hline
$T^{\rm e}_0$ & MJD  	& $45~614.80964(15)$ & $45~614.80948(14)$ \\
$P_{\rm orb \; 0}$  & s	& $20~054.1990(43)$ & $20~054.2056(22)$ \\
$\dot P_{\rm orb}$ & $ 10^{-10}$ s/s & $1.78(20)$ & $1.499(71)$ \\
$\chi^2 / $d.o.f. &              & $21.4 / 16$  & $38.69 / 25$ \\
\hline
\end{tabular}}
\tablefoot{Errors are at 1$\sigma$ c.l. on the last 2 digits. 
%%The upper Errors are at $90\%$ c.l. on the last 2 digits. The upper
%%limit on the eccentricity is at $95\%$ c.l.
The value of $P_{\rm orb \; 0}$ is referred to $T^{\rm e}_0$. The best-fit
orbital parameters reported in this work are compared with the 
ephemeris given by P2000 \citep{Parmar_00}.}
\end{table}