\begin{table}%t1
  \caption{\label{log}Observation log.}
\par
 %\centering
\par
   \begin{tabular}{ccccc}   
    \hline \hline  
   Object  & RA (J2000.0)\tablefootmark{a} & Dec (J2000.0)\tablefootmark{a} & Observation ID & Date \\ \hline
   M~81     & 09 54 57.4    & +69 02 13.2    & 5110061-001    & 2007 Apr. 19\\ 
   M~81     & 09 56 11.8    & +68 57 38.5    & 5110062-001    & 2007 Apr. 19\\
   M~81     & 09 53 42.3    & +69 06 34.7    & 5110063-001    & 2007 Apr. 19\\
   M~101    & 14 03 02.4    & +54 22 14.5    & 5110012-001    & 2006 Jun. 14\\
   M~101    & 14 03 22.6    & +54 19 31.8    & 5110013-001    & 2006 Jun. 14 \\ \hline
  \end{tabular} 
\tablefoot{\tablefoottext{a}{Units of right ascension are hours, minutes, and seconds, and units of declination are degrees, arcminutes, and arcseconds.}}
\end{table}