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There is a formula that converts eccentric anomaly to true anomaly and vice versa:


I just noticed that \[\sqrt{\frac{1+e}{1-e}}=\exp(\tanh^{-1}(e))\] which could save some keystrokes (or precious program steps) on a calculator which has atanh function.

Also this is a rare opportunity to use that built in function that almost nobody ever uses.
Nice shortcut,

But I thought marriage did that!
(04-07-2017 12:31 AM)Geoff Quickfall Wrote: [ -> ]But I thought marriage did that!
Geoff; She probably always qualified, but I think that marriage granted your wife sainthood.
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