\begin{table}%t4
\caption{Accuracy of the ephemerides of the major satellites of Uranus in mas.}
\label{table4}       
%\centering
\small                          
\begin{tabular}{c c c c c c}         
\hline\hline                  
Model & Satellite & Internal & External & Observational & Accuracy of the ephemerides on the \\ 
      &            &precision &accuracy $(1\sigma)$ &period  & period 1977$-$2017 (max deviation) \\ \hline                        
LA06  & S1 & 1 & 60 &1954--2005 & 40 \\ 
      & S2 & 3 & 60 &1954--2005 & 40 \\     
      & S3 & 7 & 60 &1954--2005 & 40 \\
      & S4 & 7 & 60 &1954--2005 & 40 \\
      & S5 & 1 & 60 &1954--2005 & 40 \\ 
\hline     
LJ86  & S1 & 1 &130 &1911--1986 & 60 \\
      & S2 & 3 &130 &1911--1986 & 60 \\     
      & S3 & 7 &130 &1911--1986 & 60 \\
      & S4 & 7 &130 &1911--1986 & 60 \\
      & S5 & 1 &130 &1911--1986 & 60 \\     
\hline                                   
\end{tabular}
\end{table}