{
  "system_id": "GJ 1245B",
  "proper_name": "Koeberg",
  "star_type": "M",
  "spectral_class": "M",
  "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": "GJ1245Bb",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 1,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.28,
      "orbital_period_days": 5.8,
      "rotation_period_hours": 139.2,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "inner rocky, tidally locked, uninhabited"
    },
    {
      "body_id": "GJ1245Bc",
      "proper_name": "Koeberg",
      "body_type": "planet",
      "orbit_index": 2,
      "parent_body_id": null,
      "inhabited": true,
      "population": 3000,
      "mass_class": "terrestrial",
      "surface_gravity": 0.72,
      "orbital_period_days": 18.0,
      "rotation_period_hours": 432.0,
      "atmosphere": "standard",
      "biome_summary": "temperate",
      "hydrosphere": "liquid_water",
      "economic_role": "manufacturing",
      "settlement_pattern": "domed",
      "industrial_corridor": null,
      "notes": "surface installation (hardened); tidally locked; wave_4 Afrikaner and Cape Malay heritage; niche textile production and geological survey work; total system community ~15K split between surface (3K) and station habitats (12K)"
    },
    {
      "body_id": "GJ1245B-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 outer asteroid belt"
    },
    {
      "body_id": "GJ1245Bd",
      "proper_name": null,
      "body_type": "gas_giant",
      "orbit_index": 4,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": null,
      "surface_gravity": null,
      "orbital_period_days": 740.0,
      "rotation_period_hours": 12.1,
      "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": "GJ1245Bd-m1",
      "proper_name": null,
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ1245Bd",
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.10,
      "orbital_period_days": 6.2,
      "rotation_period_hours": 148.8,
      "atmosphere": null,
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "icy moon, tidally locked"
    },
    {
      "body_id": "GJ1245Be",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 5,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.38,
      "orbital_period_days": 2200.0,
      "rotation_period_hours": 36.0,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer icy rocky, uninhabited"
    },
    {
      "body_id": "GJ1245Bf",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 6,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.33,
      "orbital_period_days": 4100.0,
      "rotation_period_hours": 42.0,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "distant icy rocky, uninhabited"
    },
    {
      "body_id": "GJ1245Bg",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 7,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.24,
      "orbital_period_days": 7800.0,
      "rotation_period_hours": 52.0,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer ice dwarf near oort boundary, uninhabited"
    },
    {"body_id": "GJ1245Bh", "proper_name": null, "body_type": "planet", "orbit_index": 8, "parent_body_id": null, "inhabited": false, "population": null, "mass_class": "dwarf", "surface_gravity": 0.11, "orbital_period_days": 14000, "rotation_period_hours": 28.0, "atmosphere": "none", "biome_summary": "frozen", "hydrosphere": "ice", "economic_role": null, "settlement_pattern": null, "industrial_corridor": null, "notes": "outermost dwarf, barely bound"},
    {
      "body_id": "GJ1245B-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": "GJ1245B-oort-S1",
      "proper_name": "Koeberg Horizon",
      "orbits_body_id": "GJ1245B-oort",
      "station_type": "horizon",
      "population": 12000,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": true,
      "notes": "horizon station — 1 aperture; dead_end; primary community habitation in attached station habitat modules; ward council governance; minimal external traffic"
    }
  ]
}