Numerical Prediction of Orbital Events

version 1.1.0 (2.02 MB) by David Eagle
MATLAB script and user's manual for predicting important root-finding and extrema orbital events


Updated Thu, 30 Dec 2021 19:05:58 +0000

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This submission is an interactive MATLAB script named npoe.m that can be used to propagate spacecraft in Earth orbits and model important orbital events. This script implements a special perturbation solution of orbital motion using a variable step size Runge-Kutta-Fehlberg (RKF78) integration method to numerically integrate Cowell’s form of the system of differential equations. Orbital events are predicted by embedding the RFK78 algorithm within Brent’s derivative-free methods for finding the single roots and extrema of nonlinear equations. The user can control both the integration and root-finding convergence criteria.

Cite As

David Eagle (2022). Numerical Prediction of Orbital Events (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2019b
Compatible with any release
Platform Compatibility
Windows macOS Linux

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