\begin{table}%t4
         \caption {\label{reso}Asteroids for which  some coefficients with a period shorter than 100 years change by at least~100\%
                  with the variation of  the semi-major axis. }
                  %\centerline
 {
          \begin{tabular}{r l c c c}
            \hline\hline\\[-0.2cm]
            \multicolumn{2}{l}{ \hspace{0.4cm}Asteroid} &  \multicolumn{2}{c}{Number of coeffs.}    & $\sigma(m)/m$ \\
              ${\rm N^{\rm o}}$      &    name           &  $\Delta a$     & $\Delta \lambda_{\rm M}$ & $\left[\%\right]$ \\[-0.25cm] \\
         \hline\\[-0.2cm]
     2 & \hbox{ Pallas          } & 2 & 13 &        1.3\\
     4 & \hbox{ Vesta           } & 0 &  2 &        0.09\\
    10 & \hbox{ Hygiea          } & 0 &  5 &        0.8\\
    13 & \hbox{ Egeria          } & 4 &  2 &       10.3\\
    14 & \hbox{ Irene           } & 0 &  9 &        7.1\\
    24 & \hbox{ Themis          } & 0 & 10 &       10.5\\
    28 & \hbox{ Bellona         } & 0 &  1 &         -- \\
    41 & \hbox{ Daphne          } &10 & 11 &        9.6\\
    51 & \hbox{ Nemausa         } & 0 &  1 &       11.5\\
    74 & \hbox{ Galatea         } & 0 &  3 &       19.4\\
    88 & \hbox{ Thisbe          } & 0 &  1 &        3.4\\
    98 & \hbox{ Ianthe          } & 0 &  6 &         -- \\
   139 & \hbox{ Juewa           } & 0 & 11 &       15.6\\
   181 & \hbox{ Eucharis        } & 0 &  5 &         -- \\
   275 & \hbox{ Sapientia       } & 0 &  1 &       43.\\
   324 & \hbox{ Bamberga        } & 0 &  5 &       12.1\\
   344 & \hbox{ Desiderata      } & 0 &  3 &         -- \\
   356 & \hbox{ Liguria         } & 8 &  0 &       18.6\\
   372 & \hbox{ Palma           } & 0 & 10 &       32.3\\
   393 & \hbox{ Lampetia        } & 1 & 12 &         -- \\
   405 & \hbox{ Thia            } & 0 &  5 &       47.6\\
   415 & \hbox{ Palatia         } & 0 & 14 &         -- \\
   511 & \hbox{ Davida          } & 1 &  0 &        3.4\\
   521 & \hbox{ Brixia          } & 0 &  4 &         -- \\
   532 & \hbox{ Herculina       } & 0 &  3 &        8.2\\
   704 & \hbox{ Interamnia      } & 0 &  1 &        4.3\\
  1093 & \hbox{ Freda           } & 0 &  1 &         -- \\\\[-0.2cm]
            \hline
         \end{tabular}}
\par
         \smallskip
         The expected standard deviations with Gaia marked by ``--'' mean
                  that they are greater than~50\%.
   \end{table}