Transients in the Palomar Observatory Sky Survey

[flarkey]

Extending this line of thought, Villarreal specifically suggests these were objects in geosynchronous orbits. That should constrain the potential change in position for a given "transient" between the times of the red and blue plates making a search for an alien artifact in both sets of plates quite feasible.

I think the current hypothesis is that the transients are very bright and very short in duration so unless the two plates were used for imaging at the same time then it would be very unlikely for a specific 'transients' to appear on both.