\begin{table}%t5!
\caption{\label{mbcprops}MBC properties.}
 %\centering
\par

\begin{tabular}{lccccclllll}
\hline\hline
 Object$^a$
 & $a$$^b$
 & $e$$^c$
 & $i$$^d$
 & $T_{\rm J}$$^e$
 & $H_{R}$$^f$
 & $R({\rm active})$$^g$
 & $\nu({\rm active})$$^h$
 & $\alpha_{\rm pl}({\rm active})$$^i$
 & $m_{R}({\rm active})$$^j$
 & References$^k$ \\
\hline
133P/Elst-Pizarro  & 3.164 & 0.154 & 1.369 & 3.185 & 15.5  & 2.64--3.06 & 349.9--89.1 & 0.1--0.7 & 18.3--20.3 & 1--3 \\
P/2005 U1 (Read)  & 3.165 & 0.253 & 1.267 & 3.153 & 20.1  & 2.42--2.51 & 26.4--43.9 & 0.1--0.5 & 19.3--20.2 & 4, 5 \\
176P/LINEAR     & 3.217 & 0.150 & 1.352 & 3.172 & 15.1  & 2.59--2.60 & 10.1--18.6 & 0.0--0.1 & 19.2--19.6 & 3, 6 \\
P/2008 R1 (Garradd) & 2.726 & 0.342 & 15.903 & 3.217 & $>$17.8 & 1.85--1.96 & 28.2--48.6 & 0.5--11.3 & 18.5--21.2 & 7, 8 \\
\hline
\end{tabular}
\smallskip
$^a$ Proper orbital elements for 133P and 176P from the AstDyS website; osculating
      elements for P/Read and P/Garradd from JPL's Solar System Dynamics Group's
      Small-Body Database. \\
$^b$ Semimajor axis in AU. \\
$^c$ Eccentricity. \\
$^d$ Inclination in degrees. \\
$^e$ Tisserand invariant, as computed from tabulated orbital elements. \\
$^f$ Absolute $R$-band magnitude. \\
$^g$ Range of heliocentric distances, in AU, during which activity has been observed. \\
$^h$ Range of true anomalies, in degrees, during which activity has been observed. \\
$^i$ Range of orbit plane angles, in degrees, during which activity has been observed. \\
$^j$ Range of apparent $R$-band magnitudes when activity has been observed.  \\
$^k$ 1)~\citet{els96}; 2) \citet{hsi04}; 3)
 \citet{hsi09a}; 4) \citet{rea05}; 5) \citet{hsi09b}; 6) \citet{hsi06b}; 7) \citet{gar08}; 8) \citet{jew09}. 
\end{table}