\begin{table}
\caption{\label{221866}HD 221866.}
%\centering
\small
\begin{tabular}{rrrrrrrrrr}
 \hline\hline
 HD 221866 & & &   $U$ & $B1$ & $B$ & $B2$ & $V1$ & $V$ & $G$ \\ 
 \hline
 & Mean magnitudes: &  &     8.2668 &     7.7669 &     6.8081 &     8.2177 &     8.1670 &     7.4528 &     8.5775 \\ 
 & Errors:          &  &     0.0008 &     0.0010 &     0.0009 &     0.0009 &     0.0008 &     0.0008 &     0.0008 \\ 
 \hline
 & Amplitude errors: &  &     0.0011 &     0.0014 &     0.0013 &     0.0013 &     0.0011 &     0.0011 &     0.0011 \\ 
 \hline
%&&&&&&&&& \\[-8pt]
 HD 221866 & Frequency (${\rm d}^{-1}$) & Period($d$) &$U$ & $B1$ & $B$ & $B2$ & $V1$ & $V$ & $G$ \\  \hline
 $f_1$      &      0.83843 &      1.19271 &     0.0193 &     0.0257 &     0.0247 &     0.0228 &     0.0184 &     0.0186 &     0.0176 \\ 
 Errors      &      0.00003 &      0.00004 \\ 
 & Amplitude ratios: & &       0.75 &       1.00 &       0.96 &       0.88 &       0.71 &       0.72 &       0.69 \\ 
 & Errors:           & &       0.06 &       0.08 &       0.07 &       0.07 &       0.06 &       0.06 &       0.06 \\ 
 \hline
 $f_2$      &      0.87722 &      1.13996 &     0.0201 &     0.0276 &     0.0260 &     0.0237 &     0.0191 &     0.0195 &     0.0174 \\ 
 Errors      &      0.00003 &      0.00004 \\ 
 & Amplitude ratios: & &       0.73 &       1.00 &       0.94 &       0.86 &       0.69 &       0.71 &       0.63 \\ 
 & Errors:           & &       0.06 &       0.07 &       0.07 &       0.07 &       0.05 &       0.05 &       0.05 \\ 
 \hline
 $f_3$      &      1.71562 &      0.58288 &     0.0069 &     0.0090 &     0.0084 &     0.0091 &     0.0071 &     0.0069 &     0.0074 \\ 
 Errors      &      0.00008 &      0.00003 \\ 
 & Amplitude ratios: & &       0.76 &       0.99 &       0.93 &       1.00 &       0.79 &       0.76 &       0.81 \\ 
 & Errors:           & &       0.16 &       0.21 &       0.20 &       0.21 &       0.17 &       0.16 &       0.17 \\ 
 \hline
\end{tabular}
\end{table}