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Determination of the Long Period Nutation Terms from Optical Astrometry and VLBI Data
Published online by Cambridge University Press: 12 April 2016
Abstract
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A 100-year long optical astrometric series of the Earth Orientation Parameters produced by a Czech team (Vondrák et al., 1998) has been analysed in order to determine components of nutation. Our interest is mostly focused on the long periodic terms: 18.6-year term, 9.3-year term and linear trend, still correlated in VLBI series which cover only the last 20 years. A comparison has been made with the corresponding values determined from the VLBI series.
- Type
- Part 7. Modern Definition of the Celestial Ephemeris Pole
- Information
- International Astronomical Union Colloquium , Volume 178: Polar Motion: Historical and Scientific Problems , 2000 , pp. 607 - 612
- Copyright
- Copyright © Astronomical Society of the Pacific 2000
References
Bizouard, C., Capitaine, N., Ron, C., Vondrák, J.
1997, Dynamics and Astrometry of Natural and Artificial Celestial Bodies, 481.Google Scholar
Souchay, J., Feissel, M., Bizouard, C., Capitaine, N., Bougeard, M.
1995, A&A, 299, 277.Google Scholar
Vondrák, J., Pešek, I., Ron, C., Čepek, A.
1998, Publication of the Astronomical Institute of the Academy of Sciences of the Czech Republic, No. 87.Google Scholar
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