{
  "system_id": "GJ 505A",
  "proper_name": "Bergtor",
  "star_type": "K",
  "spectral_class": "K2V",
  "wiki_data": {
    "habitable_count": 1,
    "inhabited_count": 1,
    "has_gas_giant": true,
    "has_asteroid_belt": true,
    "has_horizon_station": true,
    "raw_bodies_line": null
  },
  "bodies": [
    {
      "body_id": "GJ505Ab",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 1,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.42,
      "orbital_period_days": 22.0,
      "rotation_period_hours": 18.6,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "inner rocky, hot, uninhabited"
    },
    {
      "body_id": "GJ505Ac",
      "proper_name": "Mass",
      "body_type": "planet",
      "orbit_index": 2,
      "parent_body_id": null,
      "inhabited": true,
      "population": 24000000,
      "mass_class": "terrestrial",
      "surface_gravity": 1.08,
      "orbital_period_days": 200.0,
      "rotation_period_hours": 27.4,
      "atmosphere": "thin",
      "biome_summary": "cold_arid",
      "hydrosphere": null,
      "economic_role": "mining",
      "settlement_pattern": "urban_concentrated",
      "industrial_corridor": "mining_refractories",
      "notes": "primary inhabited world (Bergmass in survey records); wave_3 German founding; 2-aperture spur_end; K2V cold conditions; high-density rocky with concentrated tungsten, molybdenum, refractory ceramic deposits; dual council governance (extraction cooperative + residential council, created after labor action); MVG contract seats on extraction cooperative (3 of total)"
    },
    {
      "body_id": "GJ505A-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": "mining",
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "refractory mineral belt; active extraction"
    },
    {
      "body_id": "GJ505Ad",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 4,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.56,
      "orbital_period_days": 640.0,
      "rotation_period_hours": 28.8,
      "atmosphere": "thin",
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer rocky, frozen, uninhabited"
    },
    {
      "body_id": "GJ505Ae",
      "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": 2000.0,
      "rotation_period_hours": 11.4,
      "atmosphere": "gas_giant",
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer gas giant, one moon"
    },
    {
      "body_id": "GJ505Ae-m1",
      "proper_name": null,
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ505Ae",
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.11,
      "orbital_period_days": 5.8,
      "rotation_period_hours": 139.2,
      "atmosphere": null,
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "small icy moon, tidally locked"
    },
    {
      "body_id": "GJ505Af",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 6,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.44,
      "orbital_period_days": 5400.0,
      "rotation_period_hours": 34.6,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer icy rocky, uninhabited"
    },
    {
      "body_id": "GJ505Ag",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 7,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.35,
      "orbital_period_days": 12200.0,
      "rotation_period_hours": 42.4,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "distant icy rocky, uninhabited"
    },
    {
      "body_id": "GJ505Ah",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 8,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.27,
      "orbital_period_days": 26000.0,
      "rotation_period_hours": 51.8,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "far outer icy rocky, uninhabited"
    },
    {
      "body_id": "GJ505Ai",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 9,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.11,
      "orbital_period_days": 52000.0,
      "rotation_period_hours": 29.4,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outermost dwarf, near oort boundary"
    },
    {
      "body_id": "GJ505A-oort",
      "proper_name": null,
      "body_type": "oort_cloud",
      "orbit_index": 10,
      "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": "GJ505A-oort-S1",
      "proper_name": "Bergtor Horizon",
      "orbits_body_id": "GJ505A-oort",
      "station_type": "horizon",
      "population": 620,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": true,
      "notes": "horizon station — 2 apertures; spur_end; connects Eisentor and Steinfeld; ore freight staging for MVG scheduled transit"
    },
    {
      "station_id": "GJ505Ac-S1",
      "proper_name": "Bergwerk",
      "orbits_body_id": "GJ505Ac",
      "station_type": "industrial",
      "population": 6400,
      "economic_role": "mining",
      "docking_class": "major",
      "has_gate_infrastructure": false,
      "notes": "MVG extraction operations; ore consolidation from northern massif and southern highland belt; tungsten, molybdenum, refractory ceramic precursors; largest single source of high-temperature refractories in outer west"
    },
    {
      "station_id": "GJ505Ac-S2",
      "proper_name": "Siedlung",
      "orbits_body_id": "GJ505Ac",
      "station_type": "commercial",
      "population": 3800,
      "economic_role": "commercial",
      "docking_class": "standard",
      "has_gate_infrastructure": false,
      "notes": "residential cooperative operations; community services, welfare administration, protein synthesis food supply; residential council governance seat"
    }
  ]
}