# The definition of the ecliptic

@article{Kinoshita1983TheDO, title={The definition of the ecliptic}, author={H. Kinoshita and S. Aoki}, journal={Celestial mechanics}, year={1983}, volume={31}, pages={329-338} }

The ecliptic as a mean orbital plane of the Sun in Le Verrier's theory is a mean orbital plane determined from the secular parts of the longitude of the ascending node and the inclination of the Sun with respect to a reference plane. On the other hand, the ecliptic in Newcomb's theory is so chosen that the latitude with respect to his ecliptic does not have cosg nor sing whereg is the mean anomaly of the Sun. The two definitions are really different in spite of their apparent similarity… Expand

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On the precession expressions based on the de ephemeris

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The apparent coordinates in the printed material almanacs have inconsistencies concerning the reference frame. These inconsistencies produce secular errors of about 0.″001/century in the equatorial… Expand

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In order to calculate the apparent places of stars, the barycentric and heliocentric positions of the Earth and the barycentric velocity of the Earth are required. It is shown that several tens of… Expand

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About 60,000 observations of lunar occultations made during 1955–1980 are analysed using recently-developed semi-analytical solution ELP2000-82 for the Moon's position in order to determine the… Expand

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The motion of the Earth is composed of an orbital motion of the centre of mass around the Sun and a rotational motion about figure axes passing through this centre of mass. Both the orbital motion… Expand

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