\begin{table}%t1
%\centering
\par
\caption{Observational data and geometrical circumstances. No: Serial number 
of the observation. Obs: Observer (DT -- Diego Tirelli, 
Italian Group of Comet Observers; MJ \& GR -- Michael J\"ager \& Gerald Rhemann, 
Astrostudio G. Rhemann Ges. m. b. h). Date UT (2004): Time
at midexposure. RA, Dec: right ascension and declination of the comet nucleus, 
respectively, measured directly on the CCD images through
astrometric calibration. $\Delta$, $r$: Earth-comet and Sun-comet distances. 
$\phi$: Phase angle. $\nu$: True anomaly of the comet nucleus. 
$\beta$: Cometocentric latitude of the Earth; it is positive when 
the Earth is in the comet north hemisphere. 
}
\begin{tabular}{c c cccc cccr}
\hline\hline
\noalign{\smallskip}
\multicolumn{1}{c}{No} &\multicolumn{1}{c}{Obs.} &
\multicolumn{1}{c}{Date UT (2004)} &\multicolumn{1}{c}{RA[$^{\circ}$]} &
\multicolumn{1}{c}{Dec[$^{\circ}$]} &  \multicolumn{1}{c}{$\Delta$ [AU]} &\multicolumn{1}{c}{$r$[AU]} &
\multicolumn{1}{c}{$\phi[^{\circ}$]} &\multicolumn{1}{c}{$\nu[^{\circ}$]} &
\multicolumn{1}{c}{$\beta[^{\circ}$]}\\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
1  & MJ \& GR & Apr.~30.0551 & 14.6486 & 32.5708 & 1.0628 & 0.4930 & 70.0 & 108.533 & 2.4 \\
2  &   DT   & May~02.1151 & 14.6211 & 34.6623 & 1.1141 & 0.5500 & 64.5 & 112.873 & 0.6 \\
3  &   DT   & May~07.1065 & 15.1268 & 38.7339 & 1.2317 & 0.6818 & 55.0 & 120.463 & $-3.0$ \\
\hline
\end{tabular}
\label{tab1}
\end{table}