Computation and Implementation
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Ephemeris Engines: Data Sources, Interpolation, and Numerical Methods
How ephemeris engines compute planetary positions from JPL DE440, VSOP87, and Moshier data using Chebyshev interpolation.
Numerical Precision, Floating Point, and Software Validation
Error budgets, IEEE 754 floating-point traps, and validation strategies for astrological calculation software.
The Complete Chart Calculation Pipeline
End-to-end algorithm for computing a natal chart from civil time and location to final planetary positions, house cusps, and aspects.