\begin{table}%t2
   \caption{Magnitude difference for program stars.}
     \label{t:magdiff}
\par
%\centerline
{  
       \begin{tabular}{lccccl}
         \hline
         \hline
         Object      & $\Delta V$ & $\Delta V$ &  $\Delta V$ & Ref.  & $\Delta V$   \\
                     & Hipparcos  & Tycho      &  Other      & Other &  Adopted     \\
         \hline
HD~8009     & 0.935 $\pm$ 0.021 & 0.763 $\pm$ 0.046 & & & 0.905 $\pm$ 0.065  \\ 
HD~8071     & 0.281 $\pm$ 0.006 & 0.233 $\pm$ 0.010 & & & 0.268 $\pm$ 0.021  \\
HD~9911     & 0.026 $\pm$ 0.013 &-0.023 $\pm$ 0.033 & & & 0.019 $\pm$ 0.017  \\ 
HD~13357    & 0.465 $\pm$ 0.013 & 0.477 $\pm$ 0.034 & 0.47 $\pm$ 0.01 & 1 & 0.469 $\pm$ 0.010  \\ 
HD~17159    & 0.148 $\pm$ 0.011 & 0.166 $\pm$ 0.028 & & & 0.150 $\pm$ 0.010  \\ 
HD~19440    & 0.710 $\pm$ 0.008 & 0.631 $\pm$ 0.021 & $0.68\pm0.01$ & 1 &  0.692 $\pm$ 0.016 \\ 
HD~30101    & 0.134 $\pm$ 0.013 &-0.153 $\pm$ 0.032 & 0.146 $\pm$ 0.005 & 2 & 0.134 $\pm$ 0.025 \\ 
            &                 &                 & 0.13 $\pm$ 0.01 &  1 & \\
HD~33334    & 0.839 $\pm$ 0.010 & 0.700 $\pm$ 0.048 & 0.82 $\pm$ 0.01 &  1 &  0.827 $\pm$ 0.015 \\ 
HD~66491    & 0.057 $\pm$ 0.013 & 0.077 $\pm$ 0.047 &   & &  0.058 $\pm$ 0.016  \\ 
BD+23 1978  & 0.139 $\pm$ 0.016 & 0.092 $\pm$ 0.041 &   & &  0.132 $\pm$ 0.019  \\ 
HD~106515   & 0.273 $\pm$ 0.009 & 0.263 $\pm$ 0.024 &   & &  0.272 $\pm$ 0.011  \\ 
HD~108574/5 & 0.554 $\pm$ 0.012 & 0.572 $\pm$ 0.015 & 0.57 & 3 & 0.563 $\pm$ 0.011  \\  
HD~123963   & 0.773 $\pm$ 0.013 & 0.664 $\pm$ 0.034 &    &  & 0.759 $\pm$ 0.036  \\ 
HD~132563   & 0.511 $\pm$ 0.013 & 0.451 $\pm$ 0.039 &    &  & 0.505 $\pm$ 0.018  \\ 
HD~132844   & 0.095 $\pm$ 0.009 & 0.027 $\pm$ 0.044 &    &  & 0.092 $\pm$ 0.013  \\ 
HD~135101   & 0.894 $\pm$ 0.020 & 0.833 $\pm$ 0.012 & 0.85 & 3 & 0.849 $\pm$ 0.017  \\  
HD~190042   & 0.021 $\pm$ 0.008 & 0.037 $\pm$ 0.031 &    & &  0.022 $\pm$ 0.010   \\ 
HD~200466   & 0.133 $\pm$ 0.008 & 0.101 $\pm$ 0.021 & $0.15\pm0.01$ &  1 & 0.139 $\pm$ 0.009  \\ 
            &                 &            & 0.17 &  4 & \\
HIP~104687  & 0.048 $\pm$ 0.008 &-0.052 $\pm$ 0.053 & 0.00 & 5 & 0.045 $\pm$ 0.010  \\ 
            &                 &            & 0.06 &  5 & \\
HD~213013   & 0.631 $\pm$ 0.016 & 0.627 $\pm$ 0.047 & 0.62 & 5 & 0.628 $\pm$ 0.017  \\ 
            &                 &            & 0.62 &   5 & \\
HD~215812   & 0.307 $\pm$ 0.008 & 0.243 $\pm$ 0.019 &     & &  0.297 $\pm$ 0.022  \\ 
HD~216122   & 0.123 $\pm$ 0.011 & 0.123 $\pm$ 0.024 & $0.11\pm0.01$ & 1 & 0.117 $\pm$ 0.009  \\ 
HD~219542   & 0.369 $\pm$ 0.010 & 0.412 $\pm$ 0.034 & 0.391 $\pm$ 0.007 &  2 & 0.387 $\pm$ 0.006 \\ 
         \hline
      \end{tabular}}
\medskip
References: 1: Nakos et~al. (\cite{nakos95}); 
            2: Cuypers \& Seggewiss (\cite{cuypers99}); 
            3: Simbad; 
            4: Carney et~al. (\cite{carney94}); 
            5: Docobo et~al. (\cite{docobo00}).
\par
\end{table}