\begin{table}%t1
%\centering
\par
\caption{{\label{log}\sc nirspec} $J$-band observing log of vB~10.}
\small 
\par\begin{tabular}{lccccc} 
\hline\hline 
Obs.~date & UT & Slit name & Echelle & Exposure & Airmass \\
 & ($^{\rm h}$ $^{\rm m}$) &           &  (deg)  &   (s)    &         \\
\hline
2001 Jun. 15 & 14:06 & $0.576 \times 12$ & 63.00 & $2 \times 100$ & 1.20       \\  
2001 Nov.  2 & 04:43 & $0.432 \times 12$ & 62.78 & $8\times120$ & 1.16--1.22 \\   
2001 Nov.  2 & 05:39 & $0.432 \times 12$ & 63.29 & $8 \times 120$ & 1.37--1.46 \\  
2007 Jun. 25 & 13:22 & $0.432 \times 12$ & 63.00 & $2 \times 120$ & 1.18       \\   
2008 Jul. 28 & 06:07 & $0.432 \times 12$ & 63.00 & $2 \times 120$ & 1.48       \\  
\hline
\end{tabular}
\end{table}