\begin{table}%t2
\caption{\label{table:dataset}Log of spectroscopic observations at June $16{\rm th}$ 2007.}          
\par
%\centering
\small
\begin{tabular}{ c c c c c c}        
\hline\hline                         
Object & UT start & Ref. wl. & $N$ exp & Exp. time & PA range\\ 
& hh:mm:ss & [nm] & & [s] & [$^{\circ}$]\\    	     
\hline   			     
  HD 97048   & 00:41:15 & 4662.1 & 20 & 15 & 41.1--45.6\\
             & 00:58:43 & 4676.1 & 20 & 15 & 46.0--50.3\\
\hline   			     
  HIP 052419 & 02:36:14 & 4662.1 & 2 & 15 & 85.1--85.3\\
             & 02:38:47 & 4676.1 & 2 & 15 & 85.7--85.9\\
\hline                                     
  HD 100546  & 02:58:10 & 4662.1 & 6 & 15 & 74.8--76.3\\    
             & 03:05:44 & 4676.1 & 6 & 15 & 76.7--78.2\\  
\hline                                     
  HIP 061585 & 03:49:57 & 4662.1 & 2 & 15 & 72.5--72.7\\    
             & 03:52:30 & 4676.1 & 2 & 15 & 73.1--73.3\\    
\hline                                             
\end{tabular}
\end{table}