Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..16e..47g&link_type=abstract
Nomenclature, Precession and New Models in Fundamental Astronomy, 26th meeting of the IAU, Joint Discussion 16, 22-23 August 200
Astronomy and Astrophysics
Astronomy
Scientific paper
According to IAU 2000 resolutions, a reform of IAA RAS publications has been carried out during 2003-2006. In "The Astronomical Yearbook for 2007" the ephemerides of the Sun, the Moon and major planets are based on EPM 2004 theory developed in IAA RAS with accuracy adequate to DE405/LE405. Apparent places of stars are given in FK6/HIPPARCOS system referred to ICRS, and are calculated taking into account the new IAU 2000 model of nutation and the new IERS 2003 precession model which is practically close to P03 model. The sidereal time was determined by the Earth rotation angle. Coordinates of pole X, Y, CIO locator s and the equation of the origins are also presented. Matrixes of conversions from ICRS to the true equator and the equinox of date, as well as to the celestial intermediate origin and the true equator date are given. Navigating ephemerides are issued as "The Nautical Astronomical Yearbook" and "The Nautical Astronomical Almanac" biennial on the basis of DE405/LE405, new precession-nutation model, FK6/HIPPARCOS catalogues and the classical concept of the equinox. Nevertheless, the implementation of the new CIO concept in navigating ephemerides tables cannot be planned yet. At IAA RAS, the electronic versions of astronomical yearbooks have been developed allowing to calculate topocentric ephemerides. All the calculations are made with a specialized ERA programming system created in IAA RAS using the problem-oriented programming language for the solution of problems of ephemeris and dynamic astronomy.
Glebova N. I.
Lukashova M. V.
Sveshnikov M. L.
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