\begin{table}
\caption{\label{Tab.const}Main constants used in La2004. IAU76 refers to the resolutions of the International Astronmical Union 
of 1976, IERS1992, and~IERS2000, refers to the IERS conventions (McCarthy 1992; McCarthy \& Petit 2004).}
%\centering

\begin{tabular}{cclr}
\hline\hline
Symbol & Value & Name & Ref. \\
\hline
$\epsilon_0$   &~$84~381.448$                    & Obliquity  of the ecliptic at J2000.0      & IAU76    \\
$\omega_0$     &~$7.292115\times 10^{-5}$    rad s$^{-1}$      & Mean angular velocity of the Earth at J2000.0  & IERS2000 \\
$\psi_0$       &~$5029.0966$   $''$/cy              & Precession constant                        & IERS2000 \\
$\delta\psi_0$ &~$-0.29965$  $''$/cy                & Correction to the precession               & IERS2000 \\ 
$k2$           &~$0.305~$                      &$k_2$ of the Earth                            &  (Lambeck  1988) \\
$k2_{\rm M}$         &~$0.0302~$                      &$k_2$ of the Moon                             &  (Yoder  1995) \\
$\Delta t$     &~$639$  s                       & Time lag of the Earth                      &   \\
$\Delta t_{\rm M}$   &~$7055$  s                      &  Time lag of the Moon                      &   \\
$J_{2\rm E}$       &~$0.0010826362$                 &   Dynamical form-factor for the Earth      &IERS1992 \\
$J_{\rm 2M}$       &~$0.000202151$                  &   Dynamical form-factor for the Moon       &IERS1992 \\
$J_{\rm 2S}$       &~$2.\times 10^{-7}~$                      &   Dynamical form-factor for the Sun        &  IERS2000 \\
$R_{\rm E}$          &~$6378.1366$  km                &  Equatorial radius of the Earth            &  IERS2000 \\
$R_{\rm M}$          &~$1738$  km                     &  Equatorial radius of the Moon             &  IAU76 \\
$R_{\rm sun}$      & ~$696~000~000$  m                & Equatorial radius of the Sun               &  IAU76 \\
$GS$           &~$1.32712442076\times 10^{20}$ m$^3$~s$^{-2}$ & Heliocentric gravitational constant        &  IERS2000 \\
$M_{\rm mer}$      & ~$6~023~600 ~$                   & Sun -- Mercury mass ratio                   &  IERS1992 \\
$M_{\rm ven}$      &~$408~523.71~$                   & Sun -- Venus mass ratio                     &  IERS1992 \\
$M_{\rm ear}$      & ~$328~900.56~$                  & Sun -- Earth and Moon mass ratio            &  IERS1992 \\
$M_{\rm mar}$      & ~$3~098~708~$                    & Sun -- Mars mass ratio                      &  IERS1992 \\
$M_{\rm jup}$      & ~$1047.3486$                   & Sun -- Jupiter and satellites mass ratio    &  IERS1992 \\
$M_{\rm sat}$      & ~$3497.9$                      & Sun  -- Saturn and satellites  mass ratio   &  IERS1992 \\
$M_{\rm ura}$      & ~$22~902.94$                    & Sun -- Uranus and satellites  mass ratio    &  IERS1992 \\
$M_{\rm nep}$      & ~$19~412.24$                    & Sun -- Neptune and satellites mass ratio    &  IERS1992 \\
$M_{\rm plu}$      & ~$135~000~000~$                  & Sun -- Pluto and Charon mass ratio          &  IERS1992 \\
$\mu$          &~$0.0123000383~$                & Moon-Earth mass ratio                      &  IERS2000 \\
\hline
\end{tabular}
\end{table}