\begin{table}%t2
\begin{minipage}[t]{\textwidth}			
\caption{\label{Qdust}Model dust mass loss-rate of comet C/2007 D1 (LINEAR).}
%\centering
\par
\renewcommand{\footnoterule}{}			
\begin{tabular}{c c c c c c}
\hline\hline
\noalign{\smallskip}
$m_{\rm d}$\tablefootmark{a} & $C_{\rm d}$ [m$^2$]\tablefootmark{b} & $M_{\rm d}$ [kg]\tablefootmark{c} & $v(r)$ [m~s$^{-1}$]\tablefootmark{d}
& $\tau$ [s]\tablefootmark{e} & $\frac{{\rm d}M_{\rm d}}{{\rm d}t}$ [kg~s$^{-1}$]\tablefootmark{f} \\
\noalign{\smallskip}\hline\\[-3.25mm]
18.71  & 4.69 $\times$ 10$^9$ & 1.98 $\times$ 10$^8$ & 50$^{\dag}$ & 3.74 $\times$ 10$^5$ & 5.30 $\times$ 10$^2$ \\
  &                      &                      & 466$^{\S}$ & 4.00 $\times$ 10$^4$ & 4.94 $\times$ 10$^3$ \\      
\hline
\end{tabular}
\end{minipage}
{\bf Notes.} \tablefoottext{a}{Coma magnitude in the projected annulus between $\phi = 0.5^{\prime\prime}$ and $\phi' = 3.3^{\prime\prime}$.}
\tablefoottext{b}{Derived dust cross-section.}
\tablefoottext{c}{Derived dust mass in the coma annulus.}
\tablefoottext{d}{Dust grains radial outflow speed in the coma annulus. $\dag$ Realistic case. $\S$ Upper limit case (gas outflow velocity).}				\tablefoottext{e}{Crossing time of the (projected) coma annulus.}
\tablefoottext{f}{Derived dust mass loss rate.}\vspace*{1.5mm}     	
\end{table}