Re: UFO Alert Tool needs special math for Earth accuracy.

OK, I read it quickly, the math seems to be quite heavy.

I also came across an interesting solution for a simpler spherical model:

https://www.movable-type.co.uk/scripts/latlong-vectors.html

It would be less accurate, I fear it will cause problems with geodesic data sets.

But it is worthy of a mention !

One possibility could be to scale the geodesic data sets of earth to a sphere, but then I worry the distances will be inaccurate, not sure if this can be solved...

And if it would be a problem at all, but I like to keep it real if possible ! ;)

Bye for now,
  Skybuck.