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The IAU 2000 Resolutions for Astrometry, Celestial Mechanics, and Metrology in the Relativistic Framework: Explanatory Supplement

In English

Författare

  • M. Soffel
  • S. A. Klioner
  • G. Petit
  • P. Wolf
  • S. M. Kopeikin
  • P. Bretagnon
  • V. A. Brumberg
  • N. Capitaine
  • T. Damour
  • T. Fukushima
  • B. Guinot
  • T.-Y. Huang
  • Lennart Lindegren
  • C. Ma
  • K. Nordtvedt
  • J. C. Ries
  • P. K. Seidelmann
  • D. Vokrouhlický
  • C. M. Will
  • C. Xu
Visa allt

Summary, in English

We discuss the IAU resolutions B1.3, B1.4, B1.5, and B1.9 that wereadopted during the 24th General Assembly in Manchester, 2000, andprovides details on and explanations for these resolutions. It isexplained why they present significant progress over the correspondingIAU 1991 resolutions and why they are necessary in the light of presentaccuracies in astrometry, celestial mechanics, and metrology. In fact,most of these resolutions are consistent with astronomical models andsoftware already in use. The metric tensors and gravitational potentialsof both the Barycentric Celestial Reference System and the GeocentricCelestial Reference System are defined and discussed. The necessity andrelevance of the two celestial reference systems are explained. Thetransformations of coordinates and gravitational potentials arediscussed. Potential coefficients parameterizing the post-Newtoniangravitational potentials are expounded. Simplified versions of the timetransformations suitable for modern clock accuracies are elucidated.Various approximations used in the resolutions are explicated andjustified. Some models (e.g., for higher spin moments) that serve thepurpose of estimating orders of magnitude have actually never beenpublished before.

Publiceringsår

2003

Språk

Engelska

Sidor

2687-2706

Publikation/Tidskrift/Serie

Astrophysical Journal

Volym

126

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

American Astronomical Society

Ämne

  • Astronomy, Astrophysics and Cosmology

Nyckelord

  • Astrometry
  • Celestial Mechanics
  • Time
  • Reference Systems

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 0004-637X