\begin{table}%t2
%\centering
\par
\caption{Ephemeris of \object{PSR~J0751+1807} from the Nan\c{c}ay radio timing data.}
\label{tab:0751parameters}
\begin{tabular}{ll}
\hline
\hline
Parameter & Value \\
\hline
Right ascension (J2000) & 07$^{\rm h}$51$^{\rm m}$09$\fs$156312 \\
Declination (J2000) & 18$^{\circ}$07$^{\prime}$38$\farcs$590620 \\
Period ($P$)  & 0.003478770781560571 s \\
Period derivative ($\dot{P}$) & $0.726912 \times 10^{-20}$ s s$^{-1}$ \\
Second period derivative  ({\it \"{P}}) & $2.48928 \times 10^{-30}$ s s$^{-2}$\\
Frequency ($\nu$) & 287.457858811~Hz \\
Frequency derivative ($\dot{\nu}$) & $-6.0066207 \times 10^{-16}$ Hz s$^{-1}$\\
Second frequency derivative (\"{\hspace*{-0.15cm}$\nu$})  & $-2.0569423 \times 10^{-25}$~Hz~s$^{-2}$\\
Epoch of the period (MJD) & 49~301.5 \\
Orbital period & 22~735.664643 s \\
$a.\sin\ i$ & 0.39660728 \\
Eccentricity &   0.0000566981 \\
Time of ascending node (MJD) & 49~460.430540 \\
\hline
\end{tabular}
\end{table}