Debris removal satellite, debris removal control apparatus, debris removal control method, and ground facility

A debris removal satellite comprising:

• a capture device to capture debris in outer space by restraining six degrees of freedom;
• a solar array wing that is operable at an orbit higher than a congested orbit region;
• and
• a propulsion device including a plurality of thrusters,
• the debris removal satellite capturing debris, and before intrusion into the congested orbit region, which is a congested orbit or a congested region including an orbital plane of a mega-constellation, preventing the debris from intruding into the congested orbit region by a method of changing an orbital altitude by operating the propulsion device to change time of intrusion into the congested orbit region, or a method of gradually changing an orbital inclination,
• wherein the capture device is placed in a direction opposite to a jet port of a thruster with a maximum jet capacity among the plurality of thrusters,
• wherein the propulsion device includes thrusters having jet ports in a positive direction and a negative direction of an axis orthogonal to a jet direction of the thruster with the maximum jet capacity, torque is given around a center of gravity of the debris removal satellite in a debris-captured state by jets of the thrusters placed in an orthogonal direction, and a jet vector of the thruster with the maximum jet capacity passes through the center of gravity and is in a direction opposite to a flying direction, and
• wherein when an attitude of the debris removal satellite needs to be changed, translational force of thrusters away from the center of gravity is utilized as torque around the center of gravity, so as to change the attitude in a debris-captured state.