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Is there any chance we can zap its general direction with a radio beam and then listen with a huge radio telescope to get an accurate radar fix on where it is?


No. It's simply too far away for that, because d*4 gets you.

Now, if the zapper were Big Enough, when received it didn't destroy the probe, AND that there was a big enough receiver, they maybe...


According to [0] we can do 0.000012 arc seconds with interferometry.

At 22.5 light minutes, that works out to about half a meter (!) if my trig is correct.

We’d probably have to absolutely blast it with energy though.

[https://en.m.wikipedia.org/wiki/Angular_resolution#:~:text=T....]




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