\begin{table}%t3
%\centering
\par
\caption{\label{table-2}AGILE orbital parameters.}
\begin{tabular}{ll}
\hline\hline
  Orbital parameter &  \\
  \hline
  Semi-major axis &  6,922.5~km \\
  Average altitude & 535~km \\
  Eccentricity &  0.002 \\
  Inclination angle &  2.47 degrees\\
  Apogee altitude & 553~km \\
  Perigee altitude & 524~km \\
\hline
\end{tabular}
 \end{table}