A satellite constellation forming system forms a satellite constellation. The satellite constellation is composed of a satellite group. In the satellite constellation, the satellite group provides a service cooperatively. The satellite constellation has a plurality of orbital planes in which a plurality of satellites fly at the same orbital altitude in each orbital plane. A satellite constellation forming unit forms the satellite constellation in which orbital altitudes of the plurality of orbital planes are mutually different.

A satellite constellation forming system forms a satellite constellation. The satellite constellation is composed of a satellite group. In the satellite constellation, the satellite group provides a service cooperatively. The satellite constellation has a plurality of orbital planes in which a plurality of satellites fly at the same orbital altitude in each orbital plane. A satellite constellation forming unit forms the satellite constellation in which orbital altitudes of the plurality of orbital planes are mutually different.

A debris removal satellite includes a capture device, a thruster of a chemical propulsion method, and a propellant tank to store chemical fuel. A solar array wing is operable in an orbit at an orbital altitude higher than a congested orbit region congested with satellites forming a satellite constellation. The debris removal satellite is built in advance for future use as a satellite to be launched, and when a debris intrusion alarm to give a warning about intrusion of debris into the congested orbit region is issued, propellant is loaded into the propellant tank and the debris removal satellite is launched by a rocket built in advance for future use as a launch rocket. The debris removal satellite captures capture-target debris at an orbital altitude higher than the congested orbit region, and operates a propulsion device with the capture-target debris being captured.

A satellite constellation forming system (100) forms a satellite constellation (20). The satellite constellation (20) is composed of a satellite group (300). In the satellite constellation (20), the satellite group (300) provides a service cooperatively. The satellite constellation (20) has a plurality of orbital planes in which a plurality of satellites (30) fly at the same orbital altitude in each orbital plane (21). A satellite constellation forming unit (110) forms the satellite constellation (20) in which orbital altitudes of the plurality of orbital planes (21) are mutually different.