The lunar ephemeris ELP 2000.
Abstract
The analytical solution ELP200082 is used to derive the ephemeris ELP 2000 for the earthmoon system. The solutionn is the dynamical ecliptic and dynamical equinox 2000, and is used to derive the constants for the sidereal mean motion of the moon, the half coefficients of the sin l in longitude and sin F in latitude, the solar eccentricity, the sidereal mean motion of the sun, and the relative gravitational attractions of the sunmoonearth system. The accuracy of the ELP 2000 ephemeris is discussed in terms of the internal precision of the semianalytical solution ELP 200082, the accuracy of constants which receive an assigned value, the accuracy of the fitted constants, and a numerical improvement to the solution. The values for the lunar potential and tidal effects selected were the same as those for the LE 2000 solution. A numerical approximation is presented for using 10 yr laser ranging data for verifying the constants.
 Publication:

Astronomy and Astrophysics
 Pub Date:
 August 1983
 Bibcode:
 1983A&A...124...50C
 Keywords:

 Celestial Mechanics;
 EarthMoon System;
 Ephemerides;
 Gravitational Effects;
 Orbit Perturbation;
 Lunar Tides;
 Numerical Integration;
 Orbit Calculation;
 Sidereal Time;
 MOON;
 MOTION;
 CALCULATIONS;
 MODELS;
 PARAMETERS;
 PERTURBATIONS;
 DATA;
 EPHEMIRIS;
 COMPARISONS;
 ANALYSIS;
 PROCEDURE;
 CELESTIAL MECHANICS;
 Astronomy; Moon;
 Ephemerides:Moon;
 Lunar Theory