{
  "system_id": "GJ 729",
  "proper_name": "Ross 154",
  "star_type": "M",
  "spectral_class": "M3.5Ve",
  "wiki_data": {
    "habitable_count": 0,
    "inhabited_count": 0,
    "has_gas_giant": false,
    "has_asteroid_belt": false,
    "has_horizon_station": true,
    "raw_bodies_line": null
  },
  "bodies": [
    {
      "body_id": "GJ729b",
      "proper_name": "GJ729b",
      "body_type": "planet",
      "orbit_index": 1,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "terrestrial",
      "surface_gravity": 0.2,
      "orbital_period_days": 7,
      "rotation_period_hours": 168,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "inner scorched, heavy radiation"
    },
    {
      "body_id": "GJ729c",
      "proper_name": "GJ729c",
      "body_type": "planet",
      "orbit_index": 2,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "terrestrial",
      "surface_gravity": 0.35,
      "orbital_period_days": 22,
      "rotation_period_hours": 528,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "radiation-blasted"
    },
    {
      "body_id": "GJ729d",
      "proper_name": "GJ729d",
      "body_type": "planet",
      "orbit_index": 3,
      "parent_body_id": null,
      "inhabited": true,
      "population": 80000,
      "mass_class": "terrestrial",
      "surface_gravity": 0.7,
      "orbital_period_days": 60,
      "rotation_period_hours": 1440,
      "atmosphere": "thin",
      "biome_summary": "barren",
      "hydrosphere": "none",
      "economic_role": "extraction",
      "settlement_pattern": "cave",
      "industrial_corridor": null,
      "notes": "subsurface shielded facilities, processing operations"
    },
    {
      "body_id": "GJ729e",
      "proper_name": "GJ729e",
      "body_type": "planet",
      "orbit_index": 4,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "terrestrial",
      "surface_gravity": 0.3,
      "orbital_period_days": 150,
      "rotation_period_hours": 14.0,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ729f",
      "proper_name": "GJ729f",
      "body_type": "planet",
      "orbit_index": 5,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "terrestrial",
      "surface_gravity": 0.25,
      "orbital_period_days": 400,
      "rotation_period_hours": 17.0,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer dead"
    },
    {
      "body_id": "GJ729g",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 6,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "terrestrial",
      "surface_gravity": 0.25,
      "orbital_period_days": 3500,
      "rotation_period_hours": 18.0,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer ice world"
    },
    {
      "body_id": "GJ729-belt",
      "proper_name": null,
      "body_type": "asteroid_belt",
      "orbit_index": 7,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "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 belt"
    },
    {
      "body_id": "GJ729-oort",
      "proper_name": null,
      "body_type": "oort_cloud",
      "orbit_index": 8,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "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": ""
    }
  ],
  "stations": [
    {
      "station_id": "GJ729d-S1",
      "proper_name": "GJ729d-S1",
      "orbits_body_id": "GJ729d",
      "station_type": "industrial",
      "population": 50000,
      "economic_role": "extraction",
      "docking_class": "standard",
      "has_gate_infrastructure": false,
      "notes": "orbital processing, joint operations council"
    },
    {
      "station_id": "GJ729-oort-S1",
      "proper_name": "Horizon Station",
      "orbits_body_id": "GJ729-oort",
      "station_type": "horizon",
      "population": 0,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": true,
      "notes": "3 apertures"
    }
  ]
}