Report of the International Astronomical Union Division 1 Working Group on Precession and the Ecliptic
Abstract
The IAU Working Group on Precession and the Equinox looked at several solutions for replacing the precession part of the IAU 2000A precession-nutation model, which is not consistent with dynamical theory. These comparisons show that the precession theory, P03, is both consistent with dynamical theory and the solution most compatible with the IAU 2000A nutation model. Thus, the working group recommends the adoption of the P03 precession theory for use with the IAU 2000A nutation. The two greatest sources of uncertainty in the precession theory are the rate of change of the Earth's dynamical flattening, Delta-J2, and the precession rates (i.e. the constants of integration used in deriving the precession). The combined uncertainties limit the accuracy in the precession theory to approximately 2 mas cent(to the minus 2nd power).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2006
- Accession Number
- ADA452733
Entities
People
- A. Fienga
- J. Chapront
- J. Getino
- J. L. Hilton
- J. L. Simon
- J. M. Ferrandiz
- J. Vondrak
- Jim Williams
- M. Soffel
- N. Capitaine
- P. Mathews
- P. Wallace
- T. Fukushima
Organizations
- United States Naval Observatory