Methodology and accuracy · Astrovene
The astronomy behind an Astrovene chart, step by step: JPL DE440 positions read through Skyfield, the nutation bridge from the true to the mean equinox, the Lahiri ayanamsa, and whole-sign houses. Five gates run before any reading is trusted, including parity against Swiss Ephemeris to under one arc-second and a full chart compared against a published professional chart. The page also lists the classical concepts the engine computes but does not vouch for, which is the same registry the AI Co-Pilot is required to hedge on.
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