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by jagthebeetle
1267 days ago
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Isn't the earth's eccentricity incredibly low? (To the point that human-noticeability or non-precision-machinability are out of the question?) That's not to say I have any comment on the accuracy of ellipse calculation. Keplerian mechanics are beyond me. But I did see a the gear-ratio calculation repo linked: https://github.com/amandaghassaei/tellurion-orrery/tree/main... It seems angular positional error after 100 years of simulation was the optimization goal. |
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It's one-percentish, and causes the length of time between equinoxes to be shorter on the northern-hemisphere-winter-side by a day or so. The date scale on the model includes single-day divisions, which made me think that such accuracy was intended; perhaps I was wrong in that.