Earth, Moon, and Planets

, Volume 64, Issue 1, pp 31–38 | Cite as

A note on the physical parameters of the Moon

  • C. Z. Zhang
Article

Abstract

Using the Stokes coefficients of the Moon recommended by IERS Standards (1992), we determined the expression of lunar equipotential surface (selenoid), then calculated the parameters of best-fitting lunar ellipsoid. Moreover, we derived a set of hydrostatic values of lunar physical parameters by solving the Clairaut equation, and discussed the feature of nonhydrostatic component in the figure parameters of the Moon. Finally, we suggest that the lunar physical parameters should be divided into three kinds: primary constants, derived constants, and estimated constants (see Table III); as well that the second-degree Love number,k2, of the Moon should belong to the estimated constants. At present, in view of the accuracy in reductions of LLR data, a value ofk2 obtained from model calculations should be defined as its adopted value. For example, the value ofk2, 0.0266, in this paper can replace 0.0222 in IERS Standards (1992).

Keywords

Model Calculation Physical Parameter Figure Parameter Equipotential Surface Love Number 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • C. Z. Zhang
    • 1
  1. 1.Department of AstronomyNanjing UniversityNanjingChina

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