Mega-constellation business device

A mega-constellation business device of a space traffic management system that includes a plurality of space traffic management devices each individually mounted in a different one of a plurality of mega-constellation business devices that include the mega-constellation business device and in a debris removal business device, the plurality of space traffic management devices being connected to each other via a communication line and individually being mounted in a different one of a plurality of ground facilities, the plurality of mega-constellation business devices managing mega-constellations which are satellite constellations each consisting of 100 or more satellites, the debris removal business device removing debris in outer space, the space traffic management devices each comprising a database and a server,

• wherein, during orbital descent of an individual satellite that was subjected to PMD (Post Mission Disposal), out of a first mega-constellation satellite group of a first mega-constellation business operator, or during orbital descent of an individual satellite that was subjected to ADR (Active Debris Removal) by a debris removal business operator using a debris removal satellite, a second mega-constellation business device acquires information of a timeframe in which the individual satellite during orbital descent that was subjected to PMD out of the first mega-constellation satellite group or the debris removal satellite passes through an orbital altitude region where a second mega-constellation satellite group of a second mega-constellation business operator flies, and predicted orbital information of the individual satellite or the debris removal satellite during that timeframe, from a first mega-constellation business device, and performs both or one of collision analysis and collision avoidance.