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IGS-Radar 3, 4, 5, 6, Spare

The IGS-Radar 3 and 4 (Intelligence Gathering Satellite), are the second generation of Japanese radar reconnaissance satellites. The satellite are operated by the Cabinet Satellite Information Center. The satellite serves both Japan's national defense and civil natural disaster monitoring.

Reportedly, the satellite has a ground resolution of less than 1 m.

Nation: Japan
Type / Application: Reconnaissance, radar
Operator: CSICE
Contractors: Mitsubishi Electric (MELCO)
Equipment: ?
Configuration: ?
Propulsion: ?
Orbit: 473 km × 513 km, 97.42 (#3); 508 km × 514 km, 97.51 (#4); 485 km × 499 km, 97.23 (#5); 500 km × 500 km, 97.38 (#6); 490 km × 511 km, 97.52 (#Spare)
Satellite COSPAR Date LS Launch Vehicle Remarks
IGS-Radar 3 2011-075A 12.12.2011 Ta YLP-1 H-2A-202
IGS-Radar 4 2013-002A 27.01.2013 Ta YLP-1 H-2A-202 with IGS-Optical 5V
IGS-Radar 5 2017-015A 17.03.2017 Ta YLP-1 H-2A-202
IGS-Radar 6 2018-052A 12.06.2018 Ta YLP-1 H-2A-202
IGS-Radar Spare 2015-004A 01.02.2015 Ta YLP-1 H-2A-202