\begin{table}%t2
\caption{\label{rvct}Radial velocities of HD 174884.}       % title of Table
%\centering
                          % used for centering table
\begin{tabular}{c r r}        % centered columns (4 columns)
\hline\hline                 % inserts double horizontal lines
BJD --245000 &  $v_{{\rm rad,1}}$  &  $v_{{\rm rad,2}}$  \\    
                      &    (\ks)     & (\ks)   \\
\hline                        % inserts single horizontal line
4625.6910668  & --94.5 $\pm$ 1.6 &  85.1 $\pm$ 2.6 \\
4625.7333949  & --97.1 $\pm$ 1.7&   87.6 $\pm$ 2.6 \\
4625.7767647  & --97.5 $\pm$ 1.5&  99.5 $\pm$ 2.5 \\
4625.8241393  & --104.4 $\pm$ 1.5 &  99.3 $\pm$ 2.5 \\ 
4625.8549044  & --107.6 $\pm$ 1.5 &  99.0 $\pm$ 2.5 \\
4626.6823677  & --78.7 $\pm$ 1.6 &  69.8 $\pm$ 2.7 \\ 
4626.7347772  & --74.8 $\pm$ 1.6 &  63.9 $\pm$ 2.7 \\ 
4626.7602527  & --76.1 $\pm$ 1.6 &  60.4 $\pm$ 2.7 \\ 
4626.7880894  & --74.4 $\pm$ 1.6 &  58.2 $\pm$ 2.8 \\
4626.8353945  & --70.3 $\pm$ 1.6 &  53.4 $\pm$ 2.8 \\
4627.6872211  &  24.9 $\pm$ 2.0 & --83.9 $\pm$ 2.9 \\
4627.7463070  &  31.6 $\pm$ 2.0 & --90.4 $\pm$ 2.8 \\
4627.7684857  &  35.1 $\pm$ 2.0 & --98.2 $\pm$ 2.7 \\
4627.8089965  &  36.6 $\pm$ 2.0 &--107.4 $\pm$ 2.5 \\
4627.8536741  &  43.6 $\pm$ 1.9 &--113.1 $\pm$ 2.5 \\
4628.6470598  &  77.1 $\pm$ 1.7 &--162.4 $\pm$ 2.5 \\
4628.6771883  &  66.7 $\pm$ 1.8 &--152.9 $\pm$ 2.5 \\
4628.7144813  &  58.6 $\pm$ 1.8 &--137.3 $\pm$ 2.5 \\
4628.8275062  &  23.3 $\pm$ 2.1 & --91.6 $\pm$ 2.8 \\ 
4628.8613847  &  15.2 $\pm$ 2.2 & --80.6 $\pm$ 2.9 \\
4629.6750711  & --108.0 $\pm$ 1.5 & 105.0 $\pm$ 2.5 \\ 
4629.7286030  & --106.9 $\pm$ 1.5 & 108.1 $\pm$ 2.5 \\ 
4629.7752019  & --106.6 $\pm$ 1.5 & 107.4 $\pm$ 2.5 \\ 
4630.6845270  & --54.8 $\pm$ 2.0&   30.7 $\pm$ 3.5 \\
4630.7230468  & --48.7 $\pm$ 2.0 &  23.9 $\pm$ 3.5 \\
4630.7712660  & --44.7 $\pm$ 2.0 &  18.1 $\pm$ 3.5 \\
4630.8161634  & --42.1 $\pm$ 2.0 &  13.7 $\pm$ 3.5 \\
4630.8495673  & --32.2 $\pm$ 2.0 &   5.1 $\pm$ 3.5 \\
4631.7076510  &  71.8 $\pm$ 1.7 &--159.7 $\pm$ 2.5 \\
4631.7415409  &  77.3 $\pm$ 1.6 &--175.2 $\pm$ 2.5 \\
4631.7768777  &  83.5 $\pm$ 1.7 &--176.7 $\pm$ 2.5 \\
4631.8041587  &  85.6 $\pm$ 1.7 &--182.6 $\pm$ 2.5 \\
4631.8305253  &  89.7 $\pm$ 1.8 &--187.0 $\pm$ 2.5 \\
4632.6861425  & --32.9 $\pm$ 2.0 &   3.2 $\pm$ 3.5 \\ 
4632.7415956  & --51.7 $\pm$ 2.0 &  25.0 $\pm$ 3.5 \\
4632.7934837  & --62.5 $\pm$ 2.0 &  45.0 $\pm$ 3.0 \\ 
4632.8199197  & --72.8 $\pm$ 1.8 &  48.0 $\pm$ 3.0 \\ 
4632.8472122  & --75.2 $\pm$ 1.6 &  53.9 $\pm$ 3.0 \\ 
4633.7128864  & --98.8 $\pm$ 1.6 &  92.8 $\pm$ 2.5 \\
4633.7401557  & --95.9 $\pm$ 1.6 &  94.8 $\pm$ 2.5 \\
4633.7913378  & --94.1 $\pm$ 1.6 &  87.2 $\pm$ 2.5 \\
4633.8186997  & --91.9 $\pm$ 1.6 &  81.4 $\pm$ 2.5 \\
\hline                                   %inserts single line
\end{tabular}
\end{table}