\begin{table}%t1
%\centering
\par
\caption{\label{table1}List of B-type stars from Ori~OB1 considered in this study, ordered by spectral type.}
\small \begin{tabular}{cccccc}
\hline\hline \noalign{\smallskip}
HD  & HR  & Name & SpT & $V$ & Subgroup \\
\hline
\noalign{\smallskip}
\hd{36512} & \hr{1855} & $\nu$~Ori         & B0~V   & 4.62 &  Ic \\
\hd{37020} & \hr{1893} & $\theta^1$~Ori~A & B0.5~V & 6.71 &  Id \\
\hd{36960} & \hr{1887} &                    & B0.5~V & 4.78 &  Ic \\
\hd{37042} &           & $\theta^2$~Ori~B & B0.7~V & 6.02 &  Id \\
\hd{36591} & \hr{1861} &                    & B1~V   & 5.34 &  Ib \\
\hd{36959} & \hr{1886} &                    & B1~V   & 5.67 &  Ic \\
\hd{35299} & \hr{1781} &                    & B1.5~V & 5.69 &  Ia \\
\hd{37744} & \hr{1950} &                    & B1.5~V & 6.22 &  Ib \\
\hd{36285} & \hr{1840} &                    & B2~V   & 6.33 &  Ic \\
\hd{36629} &           &                    & B2~V   & 7.65 &  Ic \\
\hd{35039} & \hr{1765} &                    & B2~V   & 4.72 &  Ia \\
\hd{36430} & \hr{1848} &                    & B2~V   & 6.23 &  Ic \\
\hd{35912} & \hr{1820} &                    & B2~V   & 6.41 &  Ia \\   
\hline
\end{tabular}
\end{table}