\begin{table}%t1
\caption{\label{tab:orbdata}Orbital elements of the comets.}
\small
%\centerline
{
\begin{tabular}{lrrrr}
\hline\hline
\noalign{\smallskip}
  Comet  &
  $q$  &
  $Q$  &
  $e$  &
  $i$  \\
 &  (AU)  &
  (AU)   & &   ($^\circ$)  \\ 
\hline 
  4P/Faye           & 1.65 & 6.02 & 0.56 &  9.0 \\ 
 10P/Tempel 2       & 1.48 & 4.72 & 0.52 & 11.9 \\
 17P/Holmes         & 2.16 & 5.21 & 0.41 & 19.1 \\
 37P/Forbes         & 1.44 & 5.26 & 0.56 &  7.1 \\
 44P/Reinmuth 2     & 1.89 & 5.23 & 0.46 &  7.0 \\ 
 50P/Arend          & 1.85 & 6.24 & 0.53 & 19.9 \\
 59P/Kearns--Kwee   & 2.33 & 6.60 & 0.47 &  9.3 \\ 
 63P/Wild 1         & 1.98 & 9.24 & 0.64 & 19.9 \\ 
 71P/Clark          & 1.55 & 4.68 & 0.50 &  9.5 \\ 
 84P/Giclas         & 1.84 & 5.44 & 0.49 &  7.2 \\
106P/Schuster       & 1.62 & 5.97 & 0.57 & 20.1 \\ 
112P/Urata--Niijima & 1.44 & 5.61 & 0.58 & 24.2 \\
114P/Wiseman--Skiff & 1.56 & 5.51 & 0.56 & 18.2 \\ 
\hline\end{tabular}}
\smallskip 
$q$: perihelion distance. \\
  $Q$: aphelion distance. \\
  $e$: eccentricity. \\
  $i$: inclination.  
\end{table}