What is the general size threshold for objects that official registries primarily focus on cataloging in Low Earth Orbit?

Answer

Objects larger than 10 centimeters

Official registries generally focus on cataloging objects that are large enough to pose a significant collision risk, often setting the threshold at objects larger than 10 centimeters when tracked in Low Earth Orbit.

What is the general size threshold for objects that official registries primarily focus on cataloging in Low Earth Orbit?
Spaceexplorationrocketssatellitesspacecraftlaunch