Perfect exclusion is impossible. Even if you know how much photons you're going to get from a satellite, physics dictates you will actually get a close, but not

Perfect exclusion is impossible. Even if you know how much photons you're going to get from a satellite, physics dictates you will actually get a close, but not necessarily exact number; this uncertainty alone can be many times larger than the entire number of photons you get from a faint star, essentially destroying the observation. Many estimates are talking about 1/3 of the entire useful observational time being discarded at many critical instruments, for only one mega-constellation of the Starlink size. >But in the digital era, it will always be 100% known where the satellites were at a given point in time This has little to do with the digital era, and a lot more to do with the Cold War. (and it's far from 100%)