Orbital mechanics · 1 / S = | 1/P₁ − 1/P₂ |
Synodic Period
How often two orbiting bodies return to the same relative alignment — the interval between successive oppositions, say. Earth and Mars line up about every 2.14 years.
Synodic period2.1351yr
Formula: 1 / S = | 1/P₁ − 1/P₂ |
Worked example
With the default inputs, synodic period evaluates to 2.1351 yr — Earth–Mars → 2.14 years. The validator recomputes this against the known value on every build, so the formula is checked, not asserted.
Highlights
- ›Earth–Mars: 2.14 yr
The physics behind it
Knowledge connections
- Associated withOrbital Elements
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.