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Effects of precession uncertainties on planetary ephemerides

Published online by Cambridge University Press:  25 May 2016

H.G. Walter
H.G. Walter*
Affiliation:
Astronomisches Rechen-Institut Mönchhofstr. 12-14, D–69120 Heidelberg, Germany

Extract

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Several methods of data analysis applied recently to precise astrometric observations give evidence for a correction of the luni-solar precession (ψ) of the order of Δψ = −3 milliarcseconds per year (Williams et al., 1994). When studying the motion of bodies of the planetary system from photographic observations, an inertial stellar reference frame is required. Thus, any imperfection of the luni-solar precession would have repercussions on the determination of the orbit dynamics of the celestial body under investigation.

Type
Part XI - Reference Frames. Stellar Astrometry
Information
Symposium - International Astronomical Union , Volume 172: Dynamics, Ephemerides and Astrometry of the Solar System , 1996 , pp. 475 - 476
Copyright
Copyright © Kluwer 1996 

References

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Williams, J.G., Newhall, X X, Dickey, J.O., 1994, Determination of Precession and Nutation from Lunar Laser Ranging Analysis, Proceedings of JD 19 of the IAU XXIInd General Assembly in The Hague, IAU/WGAS Circular No. 99, Article No. 99.1.2 Google Scholar