{
  "id": "igs",
  "name": "Information Gathering Satellites (IGS)",
  "aliases": [],
  "domain": "space",
  "country": "JPN",
  "category": "Optical and radar reconnaissance satellites",
  "status": "in-service",
  "fielded": null,
  "operators": [
    "JPN"
  ],
  "summary": "Japanese Cabinet Satellite Intelligence Center reconnaissance satellites for defense and disaster monitoring.",
  "specs": [
    {
      "k": "orbit_regime",
      "v": "LEO (sun-synchronous)",
      "src": [
        "gsp-igs-radar-3"
      ],
      "conf": "medium"
    },
    {
      "k": "sats_count",
      "v": 11,
      "src": [
        "gsp-igs-radar-3"
      ],
      "conf": "low",
      "note": "IGS-Optical 5–8 and IGS-Radar 3–8 plus a radar spare launched 2011–2024"
    },
    {
      "k": "first_launch",
      "v": 2003,
      "src": [
        "gsp-igs-optical-1"
      ],
      "conf": "medium"
    }
  ],
  "payloads": [],
  "variants": [],
  "art": "satellite",
  "image": null,
  "verified": null,
  "changelog": [
    {
      "date": "2026-11-08",
      "change": "Entry created from cited open sources"
    }
  ],
  "url": "https://www.defensepedia.com/systems/igs.html",
  "sources": {
    "gsp-igs-radar-3": {
      "title": "IGS-Radar 3–8",
      "publisher": "Gunter's Space Page",
      "url": "https://space.skyrocket.de/doc_sdat/igs-radar-3.htm",
      "published": null,
      "tier": 3,
      "checked": "2026-11-08"
    },
    "gsp-igs-optical-1": {
      "title": "IGS-Optical 1, 2",
      "publisher": "Gunter's Space Page",
      "url": "https://space.skyrocket.de/doc_sdat/igs-optical-1.htm",
      "published": null,
      "tier": 3,
      "checked": "2026-11-08"
    }
  }
}