\begin{table}%t2
\caption{\label{tab:orbits}Orbital parameters for the cluster sample, together with their $1\sigma$~standard errors.}
\small%\centerline
 {
\begin{tabular}{c |c c c c c c}
  \hline\hline
  \multicolumn{7}{c}{Orbital parameters} \\
  \hline 
%&&&&&& \\[-8pt]
  NGC & $R_{\rm a}^\star$ (kpc) & $R_{\rm p}^\star$ (kpc) & $e^\star$ & $P^\star$ (Myr) & $V_{\rm c,a}^\dagger$ (km s$^{-1}$) & $\nu_{\rm sh}^\star$ (10 Gyr)$^{-1}$  \\[2pt] 
  \hline
%&&&&&& \\[-8pt]
    104 & 7.3 $\pm$   0.1    &   5.3 $\pm$ 0.3 &  0.16 $\pm$ 0.04  & 193  $\pm$ 4   &    221.4 $\pm$ 0.2 &      $(0.501\pm 0.134)\times 10^{-2}$          \\
    288 & 11.1 $\pm$  0.4    &   1.8 $\pm$ 0.5 &  0.72 $\pm$ 0.06  & 237  $\pm$ 12  &    213.5 $\pm$ 0.8 &    $(0.739\pm 0.186)\times 10^{0}$           \\
  1851 & 34.7 $\pm$ 5.9     &   5.7 $\pm$ 1.2 &  0.72 $\pm$ 0.02 & 685  $\pm$ 114 &    195.9 $\pm$ 1.4 &    $(0.804\pm 0.286)\times 10^{-3}$             \\
  1904 & 20.4 $\pm$ 1.3     &   4.4 $\pm$ 1.7 &  0.64 $\pm$ 0.10 & 422  $\pm$ 32  &    201.9 $\pm$ 1.0 &     $(0.592\pm 0.540)\times 10^{-2}$            \\
  4147 & 26.8 $\pm$ 3.4     &   4.0 $\pm$ 1.9 &  0.74 $\pm$ 0.08 & 551  $\pm$ 74  &    198.4 $\pm$ 1.4 &     $(0.208\pm 0.098)\times 10^{-1}$            \\
  4590 & 30.0 $\pm$ 3.7     &   8.7 $\pm$ 0.4 &  0.55 $\pm$ 0.03 & 650  $\pm$ 78  &    197.2 $\pm$ 1.2 &     $(0.208\pm 0.050)\times 10^{-2}$           \\
  5139 & 6.4  $\pm$    0.1   &   1.2 $\pm$ 0.1 &  0.69 $\pm$  0.02 & 123  $\pm$ 1   &    222.8 $\pm$ 0.1 &      $(0.373\pm 0.082)\times 10^{0}$         \\
  5272 & 14.0 $\pm$ 0.8     &   5.4 $\pm$ 0.8 &  0.44 $\pm$ 0.06 & 321  $\pm$ 18  &    208.6 $\pm$ 1.2 &     $(0.209\pm 0.108)\times 10^{-2}$            \\
  5466 & 69.8 $\pm$ 29.6   &   6.7 $\pm$ 1.4 &  0.83 $\pm$ 0.03 & 1340 $\pm$ 595 &    192.1 $\pm$ 1.4&   $(0.110\pm 0.074)\times 10^{0}$         \\
  5904 & 46.1 $\pm$ 12.8   &   2.5 $\pm$ 0.2 &  0.90 $\pm$ 0.02 & 995  $\pm$ 286 &    193.9 $\pm$ 1.6 &   $(0.117\pm 0.048)\times 10^{-1}$         \\
  6093 & 3.2  $\pm$   0.2    &   1.0 $\pm$ 0.6 &  0.54 $\pm$ 0.21  & 65   $\pm$ 6   &    213.3 $\pm$ 1.8 &       $(0.121\pm 0.085)\times 10^{-1}$        \\
  6121 & 5.8  $\pm$    0.3   &   0.7 $\pm$ 0.1 &  0.79 $\pm$ 0.03  & 114  $\pm$ 3   &    223.2 $\pm$ 0.1 &      $(0.280\pm 0.072)\times 10^{0}$         \\
  6171 & 3.3  $\pm$   0.2    &   2.8 $\pm$ 0.3 &  0.08 $\pm$ 0.07  & 99   $\pm$ 7   &    214.2 $\pm$ 1.7 &       $(0.125\pm 0.037)\times 10^{0}$        \\
  6205 & 25.3 $\pm$  6.9    &   5.7 $\pm$ 0.5 & 0.63 $\pm$ 0.07  & 526  $\pm$ 132 &    199.0 $\pm$ 3.3  &   $(0.154\pm 0.068)\times 10^{-2}$            \\
  6218 & 5.3  $\pm$     0.1  &   2.8 $\pm$ 0.3 &  0.30 $\pm$ 0.04  & 130  $\pm$ 4   &    223.0 $\pm$ 0.1 &      $(0.235\pm 0.075)\times 10^{-1}$          \\
  6254 & 5.0  $\pm$     0.2  &   3.4 $\pm$ 0.4 &  0.18 $\pm$ 0.05  & 132  $\pm$ 7   &    222.7 $\pm$ 0.3 &      $(0.261\pm 0.074)\times 10^{-1}$         \\
  6341 & 9.9  $\pm$   0.4    &   1.3 $\pm$ 0.1 &  0.78 $\pm$ 0.03  & 208  $\pm$ 12  &    216.0 $\pm$ 0.8 &    $(0.167\pm 0.060)\times 10^{-1}$          \\
  6362 & 5.3  $\pm$     0.1  &   2.6 $\pm$ 0.2 &  0.35 $\pm$ 0.04  & 124  $\pm$ 2   &    223.0 $\pm$ 0.1 &      $(0.491\pm 0.125)\times 10^{0}$         \\
  6656 & 9.6  $\pm$   0.7    &   2.8 $\pm$ 0.2 &  0.55 $\pm$ 0.01  & 197  $\pm$ 14  &    216.6 $\pm$ 1.5 &    $(0.441\pm 0.114)\times 10^{-1}$           \\
  6712 & 5.9  $\pm$   0.3    &   0.9 $\pm$ 0.1 &  0.74 $\pm$ 0.04  & 126  $\pm$ 11  &    223.2 $\pm$ 0.1 &    $(0.114\pm 0.041)\times 10^{0}$        \\
  6779 & 13.0 $\pm$  1.9    &   0.8 $\pm$ 0.3 &  0.88 $\pm$ 0.03 & 249  $\pm$ 30  &    210.2 $\pm$ 3.1  &    $(0.407\pm 0.142)\times 10^{0}$          \\
  6809 & 6.0  $\pm$     0.3   &   1.7 $\pm$ 0.2 &  0.56 $\pm$ 0.04 & 136  $\pm$ 5   &    223.1 $\pm$ 0.2 &      $(0.177\pm 0.048)\times 10^{0}$         \\
  6934 & 46.8 $\pm$  19.8  &   6.7 $\pm$ 1.6 &  0.75 $\pm$ 0.06 & 990  $\pm$ 434 &    193.8 $\pm$ 2.4 &   $(0.149\pm 0.112)\times 10^{-2}$          \\
  7089 & 42.2 $\pm$  17.9  &   6.3 $\pm$ 1.2 &  0.74 $\pm$ 0.06 & 860  $\pm$ 379 &    194.5 $\pm$ 2.7 &   $(0.818\pm1.220)\times 10^{-3}$          \\
  \hline
\end{tabular}}
\medskip
$^\star$ From \citet{dinescu99}; 
$^\dagger$~computed using the galactic potential from \citet{paczynski90}. \\
Consecutive columns list the cluster~NGC number, apogalactic radius~$R_{\rm a}$, perigalactic radius~$R_{\rm p}$, eccentricity~$e$, orbital period~$P$, circular velocity of the gravitational potential at the distance of apogalacticon~$V_{\rm c,a}$ and destruction rate due to disc shocking~$\nu_{\rm sh}$.
\end{table}