Table 1
Main parameters used in the numerical examples.
| Parameter | Description | Earth | Moon |
|---|---|---|---|
| m (M⊙) | Mass | 3.0035 × 10−6 | 3.6942 × 10−8 |
| R (km) | Mean radius | 6371.0 | 1737.4 |
| Trot (day) | Sidereal rotation period | 0.99727 | 27.322 |
| θ (o) | Obliquity | 23.44 | 6.68 |
| a (AU) | Semi-major axis | 1.0 | 2.56955 × 10−3 |
| e | Orbital eccentricity | 0.0167 | 0.0549 |
| I (o) | Orbital inclination | 0.0 | 5.145 (ecliptic) |
| rg | Moment of inertia factor | 0.3308 | 0.394 |
| J2 | Stokes coefficient | 1082.63 × 10−6 | 203.224 × 10−6 |
| C22 | Stokes coefficient | 1.57462 × 10−6 | 2.23814 × 10−5 |
| S22 | Stokes coefficient | −0.90387 × 10−6 | 5.86059 × 10−10 |
| C21 | Stokes coefficient | −0.26674 × 10−9 | 1.89313 × 10−11 |
| S21 | Stokes coefficient | −1.78727 × 10−9 | 1.51469 × 10−11 |
Notes. Orbital and bulk parameters taken from Williams (2016). Stokes coefficients taken from Pavlis et al. (2008) and Pavlis et al. (2012) EGM2008 (Earth), and Lemoine et al. (2014) and Goossens et al. (2016) GRGM1200A (Moon). Apart from the orbital inclination, the Moon’s orbital values are in relation to Earth.
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