Orbital Motion
Drag the body or the velocity handle to set initial conditions.
Observe how initial velocity and gravitational strength change a body's path around a central mass.
This simulation uses a simplified two-dimensional Newtonian gravity model. It does not include relativity, air resistance, tidal forces, collisions, or many-body interactions unless explicitly shown.
Preset orbits use the same simplified 2D Newtonian gravity model as Custom mode. Real celestial names are used as educational references, but presets are not real ephemeris data. Distances, speeds, masses, and time are scaled into model units for interactive viewing.