\begin{table}%t7
%\centering
\par
\caption{\label{orbpos1}Orbital parameters for giant-giant interactions.}
\par
\begin{tabular}{cccccc}
\hline\hline\noalign{\smallskip}
orb.id & $r_{{\rm ini}}$\tablefootmark{a} &  $v_{{\rm ini}}$\tablefootmark{b}  & $L$\tablefootmark{c}  & $E$\tablefootmark{d} & spin\tablefootmark{e}\\
& kpc & 10$^2$~km~s$^{-1}$ & 10$^2$~km~s$^{-1}$~kpc &  10$^4$~km$^2$~s$^{-2}$ &\\
            \hline
	    01dir &  100. &2. &56.6 &0.0 & up\\
	    01ret &  100. &2. &56.6 &0.0 & down\\	
	    02dir &  100. &3. &59.3 &2.5 & up\\
	    02ret &  100. &3. &59.3 &2.5 & down\\	
	    03dir &  100. &3.7 &62.0 &5.0 & up\\	
	    03ret &  100. &3.7 &62.0 &5.0 & down\\	
	    04dir &  100. &5.8 &71.5 &15.0 & up\\	
	    04ret &  100. &5.8 &71.5 &15.0 & down\\	
	    05dir &  100. &2. &80.0 &0.0 & up\\	
	    05ret &  100. &2. &80.0 &0.0 & down\\	
	    06dir &  100. &3. &87.6 &2.5 & up\\	
	    06ret &  100. &3. &87.6 &2.5 & down\\	
	    07dir &  100. &3.7 &94.6 &5.0 & up\\	
	    07ret &  100. &3.7 &94.6 &5.0 & down\\	
	    08dir &  100. &5.8 &118.6 &15.0 & up\\	
	    08ret &  100. &5.8 &118.6 &15.0 & down\\	
	    09dir &  100. &2.0 &97.9 &0.0 & up\\	
	    09ret &  100. &2.0 &97.9 &0.0 & down\\	
	    10dir &  100. &3.0 &111.7 &2.5 & up\\	
	    10ret &  100. &3.0 &111.7 &2.5 & down\\	
	    11dir &  100. &3.7 &123.9 &5.0 & up\\	
	    11ret &  100. &3.7 &123.9 &5.0 & down\\	
	    12dir &  100. &5.8 &163.9 &15.0 & up\\	
	    12ret &  100. &5.8 &163.9 &15.0 & down\\
            \hline
         \end{tabular}
\tablefoot{\tablefoottext{a}{Initial distance between the two galaxies;}
\tablefoottext{b}{absolute value of the initial relative velocity;}
\tablefoottext{c}{$L=\mid\vec{r_{{\rm ini}}} \times \vec{v_{{\rm ini}}}\mid$;}
\tablefoottext{d}{$E={v_{{\rm ini}}}^2/2-G(m_1+m_2)/r_{{\rm ini}}$, with $m_1 = m_2 = 2.3 \times 10^{11}~M_{\odot}$;}
\tablefoottext{e}{orbital spin, if the $z$-component is parallel (up) or anti-parallel (down) to the $z$-axis.}}
\end{table}