1. A system for generating a schedule for monitoring target objects that are in earth orbit via a network of satellites having imaging devices for collecting images, the system comprising: a storage medium storing computer-executable instructions of: a component that receives collision predictions for the target objects that may collide; a component that identifies close approaches of the target objects that may collide to satellites; a component that, for each close approach of a target object to a satellite, determines viewing angles, a collection time, and an expected image quality for collecting an image of the target object by the satellite; and a component that, for each satellite, adds to a schedule for that satellite a scheduled observation indicating orientation of the imaging device and collection time for close approaches to that satellite when the expected image quality satisfies an image quality criterion; and a processor for executing the computer-executable instructions stored in the storage medium.