Orbital Mechanics

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2 domain-specific abstractions whose origin domain is Orbital Mechanics.

• Longitude of the ascending node — An orbital element measuring in a chosen reference plane the directed angle from a reference direction to the point where an orbit crosses that plane northward.
• Universal variable formulation — A two-body orbital-propagation formulation using universal anomaly and Stumpff functions to handle elliptic parabolic and hyperbolic trajectories in one equation family.