\begin{table}%t2 \caption{\label{param}Parameters for NGC~1961.} %%\centerline { \begin{tabular}{lll} \hline\hline Parameter & Value & Reference \\ \hline RA (J2000) & 05$^{\rm h}42^{\rm m}04.6^{\rm s}$ & NED \\ Dec (J2000) & 69$^\circ$22$\arcmin$42.4\arcsec & NED \\ $v_{\rm hel}$ & $3934~{\rm km~s^{-1}}$ & NED \\ RC3 Type & SAB(rs)c & RC3 \\ Diameters & 4.6\arcmin $\times$ 3\arcmin & LEDA \\ Inclination & 47$^\circ$ & LEDA \\ Position angle & 85$^\circ$ & LEDA \\ Distance & 52.4 Mpc (1\arcsec= 254~pc) & T88 \\ $M$(H~I) & $4.7 \times 10^{10}~M_\odot$ & H08 \\ $L_B$ & $8.9 \times 10^{10}~L_{\odot}$ & LEDA \\ $L_{\rm FIR}$(40--120~$\mu $m) & $10.7 \times 10^{10}~L_{\odot}$ & {\it IRAS} \\ RA (J2000) & 05$^{\rm h}42^{\rm m}04.7^{\rm s}$ & CO-dyn \\ Dec (J2000) & 69$^\circ$22$\arcmin$42.3\arcsec & CO-dyn \\ \hline \end{tabular}} \par \smallskip RC3: de~Vaucouleurs et~al. (\cite{deva91}); T88: Tully (\cite{tull88}); H08: Haan et~al. (\cite{haan08}); CO-dyn: Dynamical center derived from the CO(2--1)\protect kinematics. \end{table}