\begin{table}%T8
\caption{\label{tab8}Companions to \HIt-deficient galaxies in the outskirts of~Virgo.}
%\centerline
{
\begin{tabular}{llcllccccc}
\hline
\hline
\multicolumn{2}{c}{Galaxy} & 
&
\multicolumn{2}{c}{Companion} & 
\multicolumn{1}{c}{$\Delta v$} &
\multicolumn{1}{c}{$\Delta m_T^c$} &
\multicolumn{1}{c}{$d/r_{\rm opt}$} & 
M & K \\
\cline{1-2}
\cline{4-5}
\multicolumn{1}{c}{VCC} & \multicolumn{1}{c}{NGC} & & \multicolumn{1}{c}{VCC} &
\multicolumn{1}{c}{NGC}  & ($\rm km ~ s^{-1}$) & & & \\
\hline
\ ~522 & 4305     & &  \ ~523 & 4306 &~$-380$ & \ ~0.9$^a$ & 2.8 & R? &
-- \\
1043    & 4438$^b$ & & 1030  & 4435 &~$-214$ & 1.0 & 1.0 & I & I \\
1690    & 4569$^c$ & & 1686$^d$ & \multicolumn{1}{c}{--}   & \ 1354       &
4.2 & 1.1 & R & R \\ 
1859    & 4606     & & 1868 & 4607 & \ \ ~593   & 0.6  & 2.7 & I? & -- \\
\hline
\end{tabular}}
\smallskip
Notes:
$^a$~$B$-band;
$^b$ also Arp 120;
$^c$ also M~90 and Arp 76;
$^d$~also~IC~3583.
\end{table}