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Precession-Nutation Estimates from Optical Astrometry 1899.7–1992.0 and Comparison with VLBI Results
Published online by Cambridge University Press: 12 April 2016
Abstract
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The most recent solution of Earth orientation parameters from the observations made by optical astrometry in 1899.7-1992.0 at 33 observatories is used to estimate the corrections of the present IAU model of precession-nutation. Since the resolution of the solution is about five days, only the terms with periods of 14 days and longer are considered. The results are compared with VLBI-based corrections of the standard precession-nutation model, and the differences are discussed.
- Type
- Section 2. Improved Definitions and Models
- Information
- International Astronomical Union Colloquium , Volume 180: Towards Models and Constants for Sub-Microarcsecond Astrometry , March 2000 , pp. 248 - 253
- Copyright
- Copyright © US Naval Observatory 2000
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