BTW, Edmund Halley managed to calculate a ground track for a 1715 eclipse. He nailed it down to within 20 miles and 4 minutes.
An amazing feat considering the difficulty of getting accurate elements to do the tremendous amount of calculations necessary to do it.
An amazing feat considering the difficulty of getting accurate elements to do the tremendous amount of calculations necessary to do it.
![[Image: Solar_eclipse_1715May03_Halley_map.png]](https://upload.wikimedia.org/wikipedia/commons/0/06/Solar_eclipse_1715May03_Halley_map.png)
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