Abstract: A worldwide network of Autonomous Robotic Telescope Systems (ARTS) tracks and analyzes space objects (satellites, shuttle, space debris, etc.) and astronomical objects (asteroids, comets, supernovas, etc.), and includes the ability to automatically schedule observations using remote, programmable or Internet controllable information networks. The system works with commercial off-the-shelf (COTS) items that include telescopes, mounts, cameras (e.g. CCD), software and computers. The telescope systems operate autonomously and remotely over Internet lines. Automatic scheduling is achieved by programming the slave telescope control computer. Satellite propagators and two line elements necessary for satellite tracking are provided on several Internet sites. Strategically placing these small portable telescope systems around the world enables users to acquire worldwide space object coverage and to be geographically diverse. This is also a cost effective way to provide necessary data to users.

Abstract: An orbital debris impact risk assessment and management model is provided for low-Earth orbit (LEO). The model is phenomenologically based, meaning real, theoretical and historical data of the LEO environment is used in conjunction with thermodynamic based code architecture to perform impact risk assessments. The format of the model is developed such that user friendliness and user adaptability are maximized. The model can be used as a stand-alone program (software) or run over the World-Wide Web as an application service provider (ASP). The model may be used to examine trends in the evolution of the LEO environment or to calculate likelihood of impacts for specific on-orbit assets or groups of assets.