Ryan Malloy
adfb6949e1
Range rate: topocentric residuals now include an optional 4th component (dot(Δr, v_ecef) / |Δr|) with OD_RR_SCALE=10.0 for unit balancing. Controlled via fit_range_rate parameter on tle_from_topocentric(). Weighted observations: per-observation weights applied as √w scaling to both residuals and Jacobian rows, producing the weighted normal equations H'WH without explicit W construction. Weights parameter added to tle_from_eci, tle_from_topocentric, and tle_from_angles. Gauss angles-only IOD: Vallado Algorithm 52 implementation for seed-free orbit recovery from 3+ RA/Dec observations. New RA/Dec residual function with cos(dec) scaling and wrap-around handling. New tle_from_angles() and tle_from_angles_multi() SQL functions accepting RA in hours [0,24), Dec in degrees [-90,90]. New standalone test suite: test_od_gauss (17 assertions). New regression tests: Tests 18-25 covering range rate, weights, angles-only with/without seed, and error cases.
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