\begin{table}%t4 \caption{\label{Tab_4}Basic properties of the detected dwarf galaxies in the vicinity of NGC~2685.} %\centerline {\begin{tabular}{llrrr} \hline \hline Descr. & Par. & PGC 25002 & UGC 4683 & Unknown \\ \hline Classification of galaxy (\citealt[][]{Vaucouleurs91}) & Type & IB(rs)m & dI & Unknown \\ Right Ascension (J2000) (NED) & RA (J2000) & $ \hmsm{8}{54}{22}{50.0} $ & $ \hmsm{8}{57}{54}{37.0} $ & $ \hmsm{8}{57}{42}{51.0} $ \\ Declination (J2000) (NED) & Dec (J2000) & $ \dmsm{58}{58}{4}{0.00} $ & $ \dmsm{59}{4}{57}{7.00} $ & $ \dmsm{59}{2}{28}{85.00} $ \\ Optical heliocentric systemic velocity (${\rm km}~{\rm s}^{-1}$) & $ V_{\rm sys} $ & $ 1017.2 ~\pm~ 8.2 $ & $ 927.0 ~\pm~ 8.2 $ & $ 1187.0 ~\pm~ 8.2 $ \\ Apparent $B$-band magnitude ($\rm mag$, \citealt[][]{Paturel89}) & $ m_{\rm B} $ & $ 16.4 $ & $ 14.8 $ & very low \\ Total \ion{H}{i} flux (${\rm Jy}~{\rm km}~{\rm s}^{-1}$) & $ F_{\rm \ion{H}{i}} $ & $ 3.3 ~\pm~ 0.3 $ & $ 2.2 \pm 0.2 $ & $ 2.1 ~\pm~ 0.2 $ \\ \ion{H}{i} mass ($10^7~{M}_\odot$) & $ M_{\rm \ion{H}{i}} $ & $ 17.8 ~\pm~ 1.9 $ & $ 12.2 ~\pm~ 1.3 $ & $ 11.3 ~\pm~ 1.2 $ \\ Projected distance of object from NGC~2685 ($~\arcsec$) & $ \rm d_{2685} $ & $ 1016 ~\pm~ 28 $ & $ 1651 ~\pm~ 28 $ & $ 1484 ~\pm~ 28 $ \\ Distance of object from NGC~2685 ($\rm kpc$) & $ \rm D_{2685} $ & $ 75 ~\pm~ 20 $ & $ 122 ~\pm~ 31 $ & $ 109 ~\pm~ 28 $ \\ Profile width at 20 percent of the peak flux density (${\rm km}~{\rm s}^{-1}$) & $ w_{20} $ & $ 95.0 ~\pm~ 9.6 $ & $ 64.0 ~\pm~ 6.5 $ & $ 72.5 ~\pm~ 7.2 $ \\ Inclination ($~\deg$) & $ i $ & $ 29.2 $ & $ 31.6 $ & $ 90.0 $ \\ Dynamical mass ($10^8~{M}_\odot$) & $M_{\rm dyn} $ & ${>}137 \pm 53$ & ${>}32 ~\pm~18$ & ${>}8.7 ~\pm~ 6.0 $ \\ \hline \end{tabular}} \medskip For all objects the same distance of NGC~2685 (Table~\ref{Tab_1}) was assumed. The data show that these galaxies probably cannot account for the ring in NGC~2685 and are dynamically unimportant. \end{table}