earthMoonGM top-level constant

double const earthMoonGM

Gravitational parameter of the Earth–Moon system G(M⊕ + M☾) in km³/s².

GM⊕ = 3.986004415·10¹⁴ m³/s² (TT-compatible value) and the Moon/Earth mass ratio 0.0123000371 – IERS Conventions (2010), table 1.1.

Implementation

const double earthMoonGM = 398600.4415 * (1 + 0.0123000371);