Solar powered satellites in counter-rotating orbits. A low powered laser focused on the leading edge of a piece of debris will (very) slowly bleed velocity unti

Solar powered satellites in counter-rotating orbits. A low powered laser focused on the leading edge of a piece of debris will (very) slowly bleed velocity until it drops into a decaying orbit. It'd be exceptionally slow, but with machine vision you can just let it auto-acquire targets unattended for a few decades or centuries.