Earth: Day Zero • Paper 070 of 512
Orbital Constraint Framework
Orbital characteristics provide some of the strongest quantitative constraints available to planetary reconstruction.
Unlike many geological observations, orbital properties can often be described using precise measurements.
Constraint Classes
- orbital distance;
- orbital stability;
- orbital inclination;
- orbital evolution;
- angular momentum relationships.
Independent Testing
The value of orbital observations lies in their independence from terrestrial geology.
This allows Earth-based and Moon-based evidence streams to be compared against one another.
Earth: Day Zero Application
Any viable Day Zero reconstruction must satisfy orbital constraints simultaneously with geometric and geological constraints.