\begin{table}%t1
      %\centering
\par
       \caption{Values for the mass of (4) Vesta determined by other authors.}\label{tab1}
         \begin{tabular}{ccc}
            \hline \hline
              Mass and $\sigma$ & Perturbed  & Reference \\
              in $ 10^{-10}~ M_{\odot}$&  bodies    &  \\
            \hline
 $1.17 \pm 0.10$& (197) Arete    & Hertz (\cite{hertz1}) \\
 $1.20 \pm 0.08$ & (197) Arete    & Hertz (\cite{hertz2})\\
 $1.38 \pm 0.12$ & (197) Arete    & Schubart $\&$ Matson     \\
               &                &(\cite{schubart}) \\
 $1.50 \pm 0.03$ & Mars           & Standish $\&$ Hellings   \\
               &                &(\cite{standish1})  \\
 $1.34       $ & DE403 solution & Standish et al.  \\
               &                &(\cite{standish2})\\
 $1.38 \pm 0.06$ & (197) Arete    & Rapaport $\&$ Viateau    \\
               &                &(\cite{rapaport})   \\
 $1.35 \pm 0.01$ & DE405 solution & Standish (\cite{standish3})        \\
 $1.52 \pm 0.15$ & (1) Ceres      & Hilton (\cite{hilton2})                 \\
 $1.34 \pm 0.09$ & 22 asteroids   & Kuznetsov (\cite{kuznetsov})           \\
 $1.36 \pm 0.05$ & 26 asteroids   & Michalak (\cite{michalak})    \\
 $1.46 \pm 0.10$ &  4 asteroids   & Krasinsky (\cite{krasinsky})       \\
$1.29 \pm 0.02$ & (197) Arete    &   Viateau  $\&$ Rapaport   \\
                &                &(\cite{viateau1})   \\
$1.31 \pm 0.02$ & (17) Thetis    &   Viateau  $\&$ Rapaport   \\
                &                &(\cite{viateau1})   \\
            \hline
   \end{tabular}
   \end{table}