Physics
Synodic Period Calculator
Find the synodic period between two orbiting bodies.
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The synodic period is how often two orbiting bodies line up again as seen from one another.
The math behind it
1/T_syn = |1/T₁ − 1/T₂|. It governs launch windows between planets.
Worked Example
Earth (365.25 d) and Mars (687 d) → about 779 days.
Frequently Asked Questions
Why does it matter for missions?
Mars launch windows recur each synodic period (~26 months).
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