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A sufficient-but-not-necessary criterion is the following inequality regarding adjacent planets and the star: 2M - ——————— c - M - total mass of the system
- m
_{1}- mass of inner planet - m
_{2}- mass of outer planet - m
_{3}- mass of star - M
_{*}- m_{1}m_{2}+ m_{1} - G - gravitation constant
- c - total angular momentum of the system
- h - the energy
orbits,celestial mechanics) |