Orbital Resonance
Explore planetary resonance, repeating alignments and orbital patterns
Compare planetary periods, trace repeating alignments and contrast a Sun-centered view with the sky seen from Earth.
Key idea
Orbital period is the time required to complete an orbit. A near-integer ratio between periods can produce repeating alignment patterns. The appearance of a pattern also depends on the frame of reference from which it is drawn.
Try this first
Choose a pair of planets and follow their relative motion. Let their trails develop, then compare a Sun-centered view with the Earth-centered perspective. Use the time slider to see how the rate and direction of time change the evolving drawing.
How to get started
- Choose the Sun-centered orbital view or the Earth-centered celestial view, then select which bodies are visible.
- Set an origin date and press Play. Adjust speed and trail length to follow the motion.
- In orbital view, enable resonance patterns to compare alignments. Open the sound controls to hear selected orbital periods translated into audible pitches.
Explore a little further
Try another experiment
Keep the same bodies and date while switching between Sun-centered and Earth-centered views. Describe which parts of the drawing change because of the viewpoint, rather than because the planets changed their physical motion.
Good to know
Orbital tones turn periods into audible frequencies through a mapping. A near numerical ratio or attractive trail does not by itself establish a dynamically locked resonance.
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