# Secular increase of astronomical unit from analysis of the major planet motions, and its interpretation

@article{Krasinsky2004SecularIO,
title={Secular increase of astronomical unit from analysis of the major planet motions, and its interpretation},
author={George A. Krasinsky and Victor Brumberg},
journal={Celestial Mechanics and Dynamical Astronomy},
year={2004},
volume={90},
pages={267-288}
}
• Published 1 November 2004
• Physics
• Celestial Mechanics and Dynamical Astronomy
AbstractFrom the analysis of all available radiometric measurements of distances between the Earth and the major planets (including observations of martian landers and orbiters over 1971–2003 with the errors of few meters) the positive secular trend in the Astronomical Unit AU is estimated as $${{\rm d}\over{{\rm d}t}} {\rm AU} = 15 \pm 4 {\rm m/cy}$$ . The given uncertainty is the 10 times enlarged formal error of the least-squares estimate and so accounts for possible systematic errors of…
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