\begin{table}%tC.8
\caption{\label{rclabel_hcg49b}HCG 49b rotation curve.}
%\centering
\par
\begin{tabular}{cccccccc}
\hline \hline \noalign{\smallskip}
           $r$   &  $\sigma_r$   &             $r$   &    $\sigma_r$   &          $v$   & $\sigma_v$   &            $N$  &              Side \\
(kpc) & (kpc) &(\arcsec) &(\arcsec) & (km~s$^{-1}$)& (km~s$^{-1}$) & bins\\
(1)&(2)&(3)&(4)&(5)&(6)&(7)&(8)\\
\hline
            0.58  &            0.00  &             0.9  &             0.0  &              45  &               7  &               1  &               a \\
            1.11  &            0.05  &             1.7  &             0.1  &              74  &               7  &               3  &               a \\
            1.57  &            0.14  &             2.4  &             0.2  &              71  &               4  &               3  &               a \\
            1.75  &            0.00  &             2.7  &             0.0  &              45  &               7  &               1  &               r \\
            2.79  &            0.57  &             4.2  &             0.9  &              67  &               2  &              24  &               a \\
            2.88  &            0.60  &             4.4  &             0.9  &              65  &               2  &              24  &               r \\
            4.71  &            0.67  &             7.1  &             1.0  &              69  &               2  &              19  &               r \\
            4.78  &            0.69  &             7.3  &             1.0  &              54  &               2  &              24  &               a \\
            8.24  &            0.99  &            12.5  &             1.5  &              44  &               2  &              24  &               a \\
\hline
\end{tabular}
\tablefoot {(1), (3) Galactic radius. (2), (4) Dispersion around the galactic radius. (5) Rotation velocity. (6) Dispersion on the rotation velocity. (7)~Number of velocity bins. (8) Receding -- r -- or approaching -- a -- side.}
\end{table}