# An absolute calibration system for millimeter-accuracy APOLLO measurements

@article{Adelberger2017AnAC,
title={An absolute calibration system for millimeter-accuracy APOLLO measurements},
author={Eric George Adelberger and James B. R. Battat and Konrad Birkmeier and N. R. Colmenares and R. Davis and C. D. Hoyle and L. R. Huang and R. J. Mcmillan and Thomas W. Murphy and Else Schlerman and Christoph Skrobol and Christopher W. Stubbs and Adolf Zach},
journal={Classical and Quantum Gravity},
year={2017},
volume={34}
}
Lunar laser ranging provides a number of leading experimental tests of gravitation—important in our quest to unify general relativity and the standard model of physics. The apache point observatory lunar laser-ranging operation (APOLLO) has for years achieved median range precision at the  ∼2 mm level. Yet residuals in model-measurement comparisons are an order-of-magnitude larger, raising the question of whether the ranging data are not nearly as accurate as they are precise, or if the models…
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