\begin{table}%t5
\caption{Kinematic data and age determinations ($\tau_{\rm iso}$). The top half
of the table contains information about coordinates (from the
Hipparcos Catalogue, ESA 1997), and radial velocities of the program stars (from
the SIMBAD database). All coordinates used are for equinox 1950. The lower section shows the velocity data obtained, along with
    evolutionary ages. The last
  row gives the stellar mass derived from the evolutionary tracks
  (Method~1).} 
\label{tab_5}
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\par
\begin{tabular}{lrrrrrr} \hline\hline
 & \object{HD 23249} & \object{HD 198149} & \object{HD 222404} & \object{HD 10780} & \object{HD 4628} & \object{HD 201091}\\\hline
$l$ (${\degr}$)                    & 198.09          &  97.87          & 118.99& 129.09 &  121.51 &  82.32\\
$b$ (${\degr}$)                    & --46.00         &  11.64          &  15.32&1.66 &  --57.58 &  --5.82 \\
$\pi$ (mas)                        & $110.58\pm0.88$ & $69.73\pm0.49$ & $72.50\pm0.52$ &  $100.24\pm0.68$ &  $134.04\pm0.86$ & $287.13\pm1.51$ \\
$\mu_{\alpha}$ $\cos \delta$ (mas) &$-91.71\pm0.98$ &$86.08\pm0.44$ & $-48.85\pm0.48$ &  $582.05\pm0.43$ &  $758.04\pm0.73$ & $4155.10\pm0.95$ \\
$\mu_{\delta}$  (mas)              & $742.23\pm0.92$ & $817.89\pm0.39$ & $127.18\pm0.44$ &  $-246.83\pm0.55$ &  $-1141.22\pm0.57$ & $3258.90\pm1.19$ \\
$v_r$ (km s$^{-1}$)                & $-6.1\pm0.9$   & $-87.3\pm0.9$ &$-42.4\pm0.9$ &  $2.8\pm2.0$ &  $-12.6\pm2.0$ &  $-64.3\pm0.9$  \\\hline
$U$ (km s$^{-1}$)                  & $-23.5\pm0.7$  & $-45.1\pm0.5$ & $11.3\pm0.6$ &  $-34.9\pm1.3$ &  $-10.5\pm0.7$ &  $-104.1\pm0.6$ \\
$V$ (km s$^{-1}$)                  & $21.5\pm0.7$    &$-102.3\pm1.1$ &$-42.7\pm1.0$ &  $-21.5\pm1.7$ &  $-54.0\pm1.1$ &  $-58.5\pm1.1$ \\
$W$ (km~s$^{-1}$)                  & $5.7\pm0.8$     &  $3.8\pm0.5$  &$-9.8\pm0.5$ &  $-12.7\pm0.4$ &  $-18.5\pm1.7$ &  $-15.2\pm0.4$ \\
$S$ (km~s$^{-1}$)                  & $32.4\pm0.7$    &  $111.9\pm1.0$ & $45.3\pm0.9$ &  $42.9\pm1.4$ &  $58.1\pm1.2$ &  $120.4\pm0.7$ \\
$\tau_{\rm iso}$ (Gyr)             & $6\pm1$         &  $2.5\pm0.3$    &  $2.2\pm0.2$ & $6\pm4$ &  $3\pm1.5$ &  10$^{+5}_{-6}$\\
$M$ ($M_{\odot}$)                   & 1.2             &  1.6            &  1.7 &  0.9 &  0.8 &  0.6\\\hline
\end{tabular}
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\end{table}