\begin{table}%t7
\par
 \caption {\label{tab:objcompare}Comparison of orbital and physical properties of some
    intermediate-large size water-bearing objects of
    interest. }     
%\centering
\par
\begin{tabular}{l l l l l l} 
\hline          
\hline   
\noalign{\smallskip}
Parameter                                                           &Orcus            & Charon           & (208996) 2003 AZ$_{84}$        &Quaoar           &Haumea\\   
\hline
Dynamical Class\tablefootmark{a} &3:2              &3:2               & 3:2           & Classical       & Classical\\
Orbit inclination ($^{\circ}$)\tablefootmark{b}        &20.6             &17.1              &13.6           &8.0              &28.2\\
Semi-major axis (AU)\tablefootmark{c}         &39.2             &39.6              &39.4           &43.5             &43.0\\ 
$q$ (AU)\tablefootmark{d}            &30.2             &29.7              &32.3           &41.7             &34.5\\ 
$Q$ (AU)\tablefootmark{e}              &48.1             &49.6              &46.5           &45.2             &51.5\\
$r$ (AU)\tablefootmark{f}          &47               &31                &45             &43               &51\\
Diameter (km)                                                       &$946\pm70^{(1)}$   &$1207\pm3^{(2)}$    &$686\pm95^{(1)}$  &$850\pm200^{(1)}$  &$1150\pm200^{(1)}$\\
                                                                    &$940\pm70^{(3)}$   &                  &                &$910\pm100^{(6)}$  &$\sim $$2000\times1500\times1000^{(5)}$\\
                                                                    &                &                   &               &$1260\pm190^{(4)}$ &\\
$p_V$ (\%)\tablefootmark{g}                      &$19.7\pm3^{(1)}$   &$\sim$$40^{(7)}$             &$12.3\pm4^{(1)}$  &$19.9\pm10^{(1)}$  &$80\pm15^{(1)}$ \\
                                                                    &$28\pm4^{(3)}$     &                   &                &$17.2\pm5^{(6)}$        &60--80$^{(8)}$\\
                                                                    &                 &                   &                &$9.2\pm4^{(4)}$ &\\
Vis. slope (\%/100~nm)\tablefootmark{h}       &$\sim$2             &--      &$\sim$3 &$\sim$28&$\sim$0\\
Dominant ice at surface                                             &H$_2$O (cryst)       &H$_2$O (cryst)                       &H$_2$O (cryst)  &H$_2$O (cryst)             &H$_2$O (cryst)\\
Volatiles and other                                                 &NH$_4^+$+C$_2$H$_6$  &NH$_4^+$+CH$_4$+NH$_3$:H$_2$O$^{(9)}$     &CH$_3$OH ?$^{(10)}$  &CH$_4$+C$_2$H$_6^{(11)}$       &--\\
                                                                    &NH$_3$:H$_2$O+CH$_4$ &NH$_3$:H$_2$O, NH$_3$$^{(13)}$           &           &CH$_4$+C$_2$H$_6$+N$_2^{(12)}$ &\\
                                                                    &NH$_3$+CH$_4$        & NH$_4$OH$^{(13)}$&&&\\
\hline
\end{tabular}
\tablefoot {
\tablefoottext{a}{Using classification by \cite{Gladman+08}.}
\tablefoottext{b}{With respect to ecliptic plane, from the Minor Planet Center.}
\tablefoottext{c}{From the Minor Planet Center.}
\tablefoottext{d}{Perihelion from the Minor Planet Center.}
\tablefoottext{e}{Aphelion from the Minor Planet Center.}
\tablefoottext{f}{Approximate current heliocentric distance.}
\tablefoottext{g}{Visible geometric albedo.}
\tablefoottext{h}{Slope of the visible spectrum from \cite{Fornasier+09} and references therein, except for Orcus: this paper.}}
\tablebib{(1) \cite{Stansberry+08}, (2)
    \cite{Sicardy+06} and references therein, (3) \cite{Brown+10}, (4)
    \cite{Brown+04}, (5)~\cite{Brown08}, (6) \cite{Brucker+09}, (7)
    computed from \cite{Buie+10}, (8) \cite{Rabinowitz+06}, (9)
    \cite{Cook+09}, (10) \cite{Guilbert+09}, (11)
    \cite{SchallerQuaoar+07}, (12) \cite{Dalle+09}, (13)
    \cite{MerlinCharon+10} and references therein.
}
\end{table}