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by daviazpen
5 days ago
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Thank you, genuinely. This means a lot, especially coming
from someone who actually read through the methodology. On the RK4 accuracy: it surprised me too, honestly. The
412 km RMS against JPL Horizons over 50 years came from
combining adaptive timestep (the integrator tightens to
~0.001 days near perihelion) with the full N-body
perturbation chain: Sun, Jupiter, Saturn, Uranus, Neptune.
Most of the residual error is from ignoring relativistic
corrections and non-gravitational forces, which I document
as known limitations. As for the naysayers: noted. Shipping is the answer. |
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