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Intercomparison of Lunar Laser and Traditional Determinations of Earth Rotation

Published online by Cambridge University Press:  12 April 2016

H. F. Fliegel ,
J. O. Dickey  and
J. G. Williams
H. F. Fliegel
Affiliation:
Jet Propulsion Laboratory California Institute of Technology Pasadena, California91109
J. O. Dickey
Affiliation:
Jet Propulsion Laboratory California Institute of Technology Pasadena, California91109
J. G. Williams
Affiliation:
Jet Propulsion Laboratory California Institute of Technology Pasadena, California91109

Abstract

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The rotational orientation of the earth (UTO at McDonald Observatory) has been determined from lunar laser ranging (LLR) measurements for the interval 1971 to 1980. The results have been differenced from those obtained by conventional means as published by the Bureau International de l’Heure (BIH), on its 1979 system. The difference displays a quasi-seasonal signature, which we ascribe to systematic errors in the conventional measurements. The lunar data are well represented by a smooth curve, which gives UTO at McDonald with a precision of about 3/4 milliseconds or better, and UT1 to within 1 millisecond using BIH polar coordinates.

Type
Part I
Information
International Astronomical Union Colloquium , Volume 63: High-Precision Earth Rotation and Earth-Moon Dynamics , May 1981 , pp. 53 - 88
Copyright
Copyright © Reidel 1982

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