{
  "system_id": "GJ 3454",
  "proper_name": "Eisentor",
  "star_type": "M",
  "spectral_class": "M3V",
  "wiki_data": {
    "habitable_count": 0,
    "inhabited_count": 0,
    "has_gas_giant": true,
    "has_asteroid_belt": true,
    "has_horizon_station": true,
    "raw_bodies_line": null
  },
  "bodies": [
    {
      "body_id": "GJ3454b",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 1,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.31,
      "orbital_period_days": 6.2,
      "rotation_period_hours": 148.8,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "inner scorched rocky, tidally locked"
    },
    {
      "body_id": "GJ3454c",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 2,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.56,
      "orbital_period_days": 38.0,
      "rotation_period_hours": 912.0,
      "atmosphere": "thin",
      "biome_summary": "cold_arid",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "inner rocky, tidally locked, marginal HZ but no surface habitability"
    },
    {
      "body_id": "GJ3454-belt",
      "proper_name": null,
      "body_type": "asteroid_belt",
      "orbit_index": 3,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": null,
      "surface_gravity": null,
      "orbital_period_days": null,
      "rotation_period_hours": null,
      "atmosphere": null,
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "sparse asteroid belt"
    },
    {
      "body_id": "GJ3454d",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 4,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.44,
      "orbital_period_days": 160.0,
      "rotation_period_hours": 21.8,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer rocky, frozen, uninhabited"
    },
    {
      "body_id": "GJ3454e",
      "proper_name": null,
      "body_type": "gas_giant",
      "orbit_index": 5,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": null,
      "surface_gravity": null,
      "orbital_period_days": 540.0,
      "rotation_period_hours": 12.2,
      "atmosphere": "gas_giant",
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer gas giant; primary habitation station orbits here"
    },
    {
      "body_id": "GJ3454e-m1",
      "proper_name": null,
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ3454e",
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.12,
      "orbital_period_days": 5.4,
      "rotation_period_hours": 129.6,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "icy moon, tidally locked"
    },
    {
      "body_id": "GJ3454e-m2",
      "proper_name": null,
      "body_type": "moon",
      "orbit_index": 2,
      "parent_body_id": "GJ3454e",
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.08,
      "orbital_period_days": 11.8,
      "rotation_period_hours": 283.2,
      "atmosphere": null,
      "biome_summary": "barren",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "small rocky moon, tidally locked"
    },
    {
      "body_id": "GJ3454f",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 6,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.36,
      "orbital_period_days": 1600.0,
      "rotation_period_hours": 31.4,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer icy rocky, uninhabited"
    },
    {
      "body_id": "GJ3454g",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 7,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.11,
      "orbital_period_days": 4200.0,
      "rotation_period_hours": 26.8,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outermost ice dwarf"
    },
    {
      "body_id": "GJ3454h",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 8,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.10,
      "orbital_period_days": 9400.0,
      "rotation_period_hours": 21.6,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "distant ice dwarf"
    },
    {
      "body_id": "GJ3454-oort",
      "proper_name": null,
      "body_type": "oort_cloud",
      "orbit_index": 9,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": null,
      "surface_gravity": null,
      "orbital_period_days": null,
      "rotation_period_hours": null,
      "atmosphere": null,
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "oort cloud"
    }
  ],
  "stations": [
    {
      "station_id": "GJ3454-oort-S1",
      "proper_name": "Eisentor Horizon",
      "orbits_body_id": "GJ3454-oort",
      "station_type": "horizon",
      "population": 4200,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": true,
      "notes": "horizon station — 4 apertures; junction; connects Hansestadt, Altmark, Bergtor, and Kraków Junction"
    },
    {
      "station_id": "GJ3454e-S1",
      "proper_name": "Eisenhof",
      "orbits_body_id": "GJ3454e",
      "station_type": "commercial",
      "population": 8600,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": false,
      "notes": "primary habitation; MVG-built transit station orbiting gas giant; three-party governance (MVG infrastructure, Gate Corp scheduling, workers' association); no formal settlement charter; 11K permanent residents without voting rights under any legal framework"
    },
    {
      "station_id": "GJ3454e-S2",
      "proper_name": "Leitwerk",
      "orbits_body_id": "GJ3454e",
      "station_type": "industrial",
      "population": 2400,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": false,
      "notes": "Gate Corporation four-aperture scheduling operations; freight routing and transit coordination; hardware past certified operational lifespan"
    }
  ]
}