Keplerian (two‑body) propagation for one orbit with Earth rotation. Background is an industry‑standard Plate Carrée (equirectangular) map (green land, blue oceans). Export as PNG.
Inputs: semi‑major axis a (km), eccentricity e, inclination i (deg), RAAN Ω (deg), argument of perigee ω (deg), initial true anomaly ν₀ (deg). Earth μ = 398600.4418 km³/s²; Earth rotation ωE = 7.2921159×10⁻⁵ rad/s.
If exporting throws a security error (tainted canvas), the app will export a version without the map layer and then restore it.