🪐 Solar System N-Body Integrator Energy Drift and Barycentre Lab

The Sun and eight planets from real JPL J2000 orbital elements, integrated at the same time with Euler, leapfrog, RK4 and Yoshida 4 to compare energy drift, with the Sun's wobble about the barycentre, the Jupiter-Saturn 5:2 near-resonance and a timestep slider. Includes an accuracy experiment against the exact Kepler solution with measured convergence orders.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install