{
  "id": "tjs-huoyan",
  "name": "TJS-2/5/6 (suspected Huoyan-1 early warning)",
  "aliases": [
    "Huoyan-1"
  ],
  "domain": "space",
  "country": "CHN",
  "category": "Suspected missile early warning satellites",
  "status": "in-service",
  "fielded": null,
  "operators": [
    "CHN"
  ],
  "summary": "Chinese GEO satellites billed as communications tests but suspected to be Huoyan-1 missile early warning satellites.",
  "specs": [
    {
      "k": "orbit_regime",
      "v": "GEO",
      "src": [
        "gsp-tjs-2"
      ],
      "conf": "medium"
    },
    {
      "k": "sats_count",
      "v": 3,
      "src": [
        "gsp-tjs-2"
      ],
      "conf": "medium",
      "note": "TJS 2 (2017), TJS 5 (2020), TJS 6 (2021)"
    },
    {
      "k": "first_launch",
      "v": 2017,
      "src": [
        "gsp-tjs-2"
      ],
      "conf": "low"
    },
    {
      "k": "on_orbit",
      "v": 3,
      "src": [
        "celestrak-gp"
      ],
      "conf": "high",
      "note": "Payloads with current element sets in the public catalog, active or not."
    },
    {
      "k": "active_sats",
      "v": 3,
      "src": [
        "celestrak-gp"
      ],
      "conf": "medium",
      "note": "Count in the CelesTrak active satellites list, which estimates operational status."
    },
    {
      "k": "perigee_km",
      "v": [
        35763,
        35777
      ],
      "src": [
        "celestrak-gp"
      ],
      "conf": "high",
      "note": "Active satellites per CelesTrak, element epoch about 2026-11-08."
    },
    {
      "k": "apogee_km",
      "v": [
        35796,
        35810
      ],
      "src": [
        "celestrak-gp"
      ],
      "conf": "high",
      "note": "Active satellites per CelesTrak, element epoch about 2026-11-08."
    },
    {
      "k": "period_min",
      "v": 1436.1,
      "src": [
        "celestrak-gp"
      ],
      "conf": "high",
      "note": "Active satellites per CelesTrak, element epoch about 2026-11-08."
    },
    {
      "k": "inclination_deg",
      "v": [
        0.12,
        1.2
      ],
      "src": [
        "celestrak-gp"
      ],
      "conf": "high",
      "note": "Active satellites per CelesTrak, element epoch about 2026-11-08."
    }
  ],
  "payloads": [],
  "variants": [],
  "art": "satellite",
  "image": null,
  "verified": null,
  "changelog": [
    {
      "date": "2026-11-08",
      "change": "Entry created from cited open sources"
    },
    {
      "date": "2026-11-08",
      "change": "Orbital elements from CelesTrak GP data (epoch about 2026-11-08): 3 catalogued, 3 active."
    }
  ],
  "satellites": [
    {
      "name": "TJS-2",
      "norad": 41911,
      "cospar": "2017-001A",
      "perigee_km": 35777,
      "apogee_km": 35796,
      "inclination_deg": 1.2,
      "period_min": 1436.1,
      "epoch": "2026-11-08",
      "active": true,
      "owner": "PRC",
      "launch": "2017-01-05"
    },
    {
      "name": "TJS-5",
      "norad": 44978,
      "cospar": "2020-002A",
      "perigee_km": 35763,
      "apogee_km": 35810,
      "inclination_deg": 0.36,
      "period_min": 1436.1,
      "epoch": "2026-11-08",
      "active": true,
      "owner": "PRC",
      "launch": "2020-01-07"
    },
    {
      "name": "TJS-6",
      "norad": 47613,
      "cospar": "2021-010A",
      "perigee_km": 35773,
      "apogee_km": 35800,
      "inclination_deg": 0.12,
      "period_min": 1436.1,
      "epoch": "2026-11-08",
      "active": true,
      "owner": "PRC",
      "launch": "2021-02-04"
    }
  ],
  "url": "https://www.defensepedia.com/systems/tjs-huoyan.html",
  "sources": {
    "gsp-tjs-2": {
      "title": "TJS 2, 5, 6, 13 (Huoyan-1 ?)",
      "publisher": "Gunter's Space Page",
      "url": "https://space.skyrocket.de/doc_sdat/tjs-2.htm",
      "published": null,
      "tier": 3,
      "checked": "2026-11-08"
    },
    "celestrak-gp": {
      "title": "NORAD GP element sets (current data)",
      "publisher": "CelesTrak (data from the U.S. Space Force 18th/19th Space Defense Squadron catalog)",
      "url": "https://celestrak.org/NORAD/elements/",
      "published": "2026-11-08",
      "tier": 1,
      "checked": "2026-11-08"
    }
  }
}