\begin{table} %t5
\caption{\label{tab:afrho}Properties of the comae of the comets: $Af\rho$.}
\small%\centerline
{
\begin{tabular}{lccrcrr}
\hline\hline 
 Comet   &
 Year of   &
 $r_{\rm h}$ &
 $\alpha$  &
 $\lambda$ or band   &
 $Af\rho$   &
 Remark   \\
 &
   perihelion   &
   (AU)   &
   ($^\circ$)   &
   (nm)  &
   (cm)   & \\ 
\hline 
  4P/Faye           & 1991 & 1.78$^I$ & 15.5 & 524 & 380   & AH+95 \\
                    & 1991 & 1.60$^I$ &  6.0 & $R$ & 890          & L+96 \\
                    & 1991 & 1.59$^O$ & 19.3 & $R$ & 660          & L+96 \\
                    & 2000 & 2.96$^O$ &  5.6 & $R$ &129~$\pm$~6     & This work \\
                    & 2000 & 3.45$^O$ & 16.8 & $R$ &  43.7~$\pm$~3  & LoW03 \\
 10P/Tempel 2       & 1988 & 1.78$^I$ & 20.3 & 524 & 20    & AH+95 \\
                    & 1988 & 1.72$^I$ & 19.8 & 295        & $<$40    & FF91 \\
                    & 1988 & 1.72$^I$ & 20.3 & 684 &  17          & AH+89 \\
                    & 1999 & 1.67$^I$ & 12.8 & $R$ &  88~$\pm$~4    & This work \\
                    & 1988 & 1.69$^O$ & 33.3 & 295 & 140      & FF91 \\
 17P/Holmes         & 2000 & 3.12$^I$ &  8.5 & $R$ & 20~$\pm$~1 & This work \\
 37P/Forbes         & 1999 & 2.27$^O$ & 14.8 & $R$ & 37~$\pm$~2 & This work \\
 44P/Reinmuth 2     & 2001 & 4.73$^I$ & 10.3 & $R$ & $\leq$2.3  & LF+01 \\
                    & 2001 & 4.26$^I$ & 12.7 & $R$ & $\leq$11.4 & Lo+03 \\
                    & 2001 & 2.73$^I$ &  5.3 & $R$ & 86~$\pm$~1   & This work \\
 50P/Arend          & 1999 & 2.37$^O$ & 11.8 & 670 & 58~$\pm$~3     & This work \\
                    & 1999 & 2.96$^O$ & 19.1 & $R$ &  9.4~$\pm$~2   & LoW03 \\
 59P/Kearns--Kwee   & 1981 & 2.24$^I$ & 21.4 & 524 & 68 & AH+95 \\
                    & 1999 & 2.52$^O$ &  3.3 & $R$ & 112~$\pm$~6 & This work \\
 63P/Wild 1         & 1999 & 2.27$^O$ &  9.2 & $R$ &  14~$\pm$~7 & This work \\
 71P/Clark          & 2000 & 4.40$^I$ &  8.2 & $R$ & $\leq$2.2  & LF+01 \\
                    & 2000 & 2.72$^I$ &  7.5 & $R$ &  68~$\pm$~1  & This work \\
 84P/Giclas         & 1999 & 2.21$^O$ & 16.9 & $R$ &  60~$\pm$~3 & This work \\
106P/Schuster       & 1999 & 1.67$^I$ & 23.0 & $R$ & 103~$\pm$~5 & This work \\
112P/Urata--Niijima & 2000 & 2.30$^I$ & 19.2 & $R$ &   5~$\pm$~1 & This work \\
114P/Wiseman--Skiff & 2000 & 1.57$^O$ & 33.2 & $R$ &  43~$\pm$~2 & This work \\
 \hline
 \end{tabular}}
 \smallskip
  $r_{\rm h}$: heliocentric distance.   \\
  $I$: inbound or $O$: outbound in the orbit.  \\
 $\alpha$: solar phase angle.  \\
  $\lambda$: wavelength.  \\
  AH+89: \citet{A'Hearn_etal89}. \\
  AH+95: \citet{ahearn_etal95}. \\
  FF91: IUE observations by \citet{feldman_festou92}.   \\
  L+96: \citet{lamy_etal96}.  \\
  LF01: \citet{lowry_fitzsimmons01}.   \\
 Lo+03: \citet{lowry_etal03}.  \\
  LoW03: \citet{lowry_weissman03}. 
  %\vspace*{-4mm}
\end{table}