Module physics 

Orbital physics engine with symplectic integrators.

Implements numerical integration for orbital mechanics:

• Yoshida 4th order (symplectic, time-reversible)
• N-body gravitational force field
• Adaptive time-stepping for close encounters

References

[8] Hairer, Lubich, Wanner, “Geometric Numerical Integration,” 2006. [13] H. Yoshida, “Construction of higher order symplectic integrators,” 1990. [30] Hockney & Eastwood, “Computer Simulation Using Particles,” 1988.

Structs

AdaptiveIntegrator

Adaptive time-stepping for close encounters.

NBodyState

N-body gravitational system state.

OrbitBody

Body state in the N-body system.

YoshidaIntegrator

Yoshida 4th order symplectic integrator.