New precession expressions, valid for long time intervals

0370060 - ASÚ 2012 RIV FR eng J - Journal Article
Vondrák, Jan - Capitaine, N. - Wallace, P.
New precession expressions, valid for long time intervals.
Astronomy & Astrophysics. Roč. 534, October (2011), A22/1-A22/19. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA MŠMT(CZ) LC506
Institutional research plan: CEZ:AV0Z10030501
Keywords : astrometry * ephemerides * reference systems
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 4.587, year: 2011
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Series for the various precessional parameters, comprising a cubic polynomial plus from 8 to 14 periodic terms, are derived. These allow to compute precession with an accuracy that is comparable to IAU 2006 model close to central epoch J2000.0, a few arcseconds throughout the historical period, and a few tenths of a degree an the ends of the +/- 200 millennia time span. Computer algorithms are also provided.
Permanent Link: http://hdl.handle.net/11104/0203972