Research Article
Nonsphericity of the Moon and Near Sun-Synchronous Polar Lunar Orbits
Table 2
Critical inclination for the potential of first order, where:
;
.
| Longitude of the ascending node (h) | Critical inclination for direct orbits (ic) | Critical inclination for retrograde orbits (ic) |
| 1 rad | 61.10° | 118.90° | 2 rad | 59.98° | 120.02° | | 58.56° | 121.45° | | 60.69° | 119.31° | | 72.83° | 107.17° |
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