{
  "system_id": "GJ 0",
  "proper_name": "Sol",
  "star_type": "G",
  "spectral_class": "G2V",
  "wiki_data": {
    "habitable_count": 2,
    "inhabited_count": 4,
    "has_gas_giant": true,
    "has_asteroid_belt": true,
    "has_horizon_station": true,
    "raw_bodies_line": "| **Bodies** | 2 habitable · 4 inhabited |"
  },
  "bodies": [
    {
      "body_id": "GJ0b",
      "proper_name": "Mercury",
      "body_type": "planet",
      "orbit_index": 1,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "terrestrial",
      "surface_gravity": 0.38,
      "orbital_period_days": 88,
      "rotation_period_hours": 1408,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ0c",
      "proper_name": "Venus",
      "body_type": "planet",
      "orbit_index": 2,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "terrestrial",
      "surface_gravity": 0.90,
      "orbital_period_days": 225,
      "rotation_period_hours": 5832,
      "atmosphere": "toxic",
      "biome_summary": "volcanic",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "retrograde rotation"
    },
    {
      "body_id": "GJ0d",
      "proper_name": "Earth",
      "body_type": "planet",
      "orbit_index": 3,
      "parent_body_id": null,
      "inhabited": true,
      "population": 8500000000,
      "mass_class": "terrestrial",
      "surface_gravity": 1.00,
      "orbital_period_days": 365,
      "rotation_period_hours": 24.0,
      "atmosphere": "breathable",
      "biome_summary": "temperate",
      "hydrosphere": "ocean",
      "economic_role": "manufacturing",
      "settlement_pattern": "urban_concentrated",
      "industrial_corridor": null,
      "notes": "origin world"
    },
    {
      "body_id": "GJ0d-1",
      "proper_name": "Luna",
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ0d",
      "inhabited": true,
      "population": 350000000,
      "mass_class": "dwarf",
      "surface_gravity": 0.17,
      "orbital_period_days": 27.3,
      "rotation_period_hours": 655.7,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": "none",
      "economic_role": "manufacturing",
      "settlement_pattern": "domed",
      "industrial_corridor": null,
      "notes": "old colonies, industrial"
    },
    {
      "body_id": "GJ0e",
      "proper_name": "Mars",
      "body_type": "planet",
      "orbit_index": 4,
      "parent_body_id": null,
      "inhabited": true,
      "population": 1200000000,
      "mass_class": "terrestrial",
      "surface_gravity": 0.38,
      "orbital_period_days": 687,
      "rotation_period_hours": 24.6,
      "atmosphere": "thin",
      "biome_summary": "arid",
      "hydrosphere": "ice",
      "economic_role": "extraction",
      "settlement_pattern": "domed",
      "industrial_corridor": null,
      "notes": "partially terraformed over 800 years"
    },
    {
      "body_id": "GJ0e-1",
      "proper_name": "Phobos",
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ0e",
      "inhabited": false,
      "population": 0,
      "mass_class": "dwarf",
      "surface_gravity": 0.001,
      "orbital_period_days": 0.3,
      "rotation_period_hours": 7.7,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ0e-2",
      "proper_name": "Deimos",
      "body_type": "moon",
      "orbit_index": 2,
      "parent_body_id": "GJ0e",
      "inhabited": false,
      "population": 0,
      "mass_class": "dwarf",
      "surface_gravity": 0.001,
      "orbital_period_days": 1.3,
      "rotation_period_hours": 30.3,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ0-belt",
      "proper_name": null,
      "body_type": "asteroid_belt",
      "orbit_index": 5,
      "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": ""
    },
    {
      "body_id": "GJ0f",
      "proper_name": "Jupiter",
      "body_type": "gas_giant",
      "orbit_index": 6,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "gas_giant",
      "surface_gravity": null,
      "orbital_period_days": 4333,
      "rotation_period_hours": 9.9,
      "atmosphere": "dense",
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ0f-1",
      "proper_name": "Io",
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ0f",
      "inhabited": false,
      "population": 0,
      "mass_class": "dwarf",
      "surface_gravity": 0.18,
      "orbital_period_days": 1.8,
      "rotation_period_hours": 42.5,
      "atmosphere": "none",
      "biome_summary": "volcanic",
      "hydrosphere": "none",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "tidally locked, volcanically active"
    },
    {
      "body_id": "GJ0f-2",
      "proper_name": "Europa",
      "body_type": "moon",
      "orbit_index": 2,
      "parent_body_id": "GJ0f",
      "inhabited": true,
      "population": 30000000,
      "mass_class": "dwarf",
      "surface_gravity": 0.13,
      "orbital_period_days": 3.6,
      "rotation_period_hours": 85.2,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "subsurface",
      "economic_role": "research",
      "settlement_pattern": "domed",
      "industrial_corridor": null,
      "notes": "4th inhabited body, subsurface ocean research settlement"
    },
    {
      "body_id": "GJ0f-3",
      "proper_name": "Ganymede",
      "body_type": "moon",
      "orbit_index": 3,
      "parent_body_id": "GJ0f",
      "inhabited": false,
      "population": 0,
      "mass_class": "dwarf",
      "surface_gravity": 0.15,
      "orbital_period_days": 7.2,
      "rotation_period_hours": 171.7,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ0f-4",
      "proper_name": "Callisto",
      "body_type": "moon",
      "orbit_index": 4,
      "parent_body_id": "GJ0f",
      "inhabited": false,
      "population": 0,
      "mass_class": "dwarf",
      "surface_gravity": 0.13,
      "orbital_period_days": 16.7,
      "rotation_period_hours": 400.5,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ0g",
      "proper_name": "Saturn",
      "body_type": "gas_giant",
      "orbit_index": 7,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "gas_giant",
      "surface_gravity": null,
      "orbital_period_days": 10759,
      "rotation_period_hours": 10.7,
      "atmosphere": "dense",
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": ""
    },
    {
      "body_id": "GJ0g-1",
      "proper_name": "Titan",
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ0g",
      "inhabited": false,
      "population": 0,
      "mass_class": "dwarf",
      "surface_gravity": 0.14,
      "orbital_period_days": 16.0,
      "rotation_period_hours": 382.7,
      "atmosphere": "dense",
      "biome_summary": "frozen",
      "hydrosphere": "rivers",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "methane rivers and lakes"
    },
    {
      "body_id": "GJ0g-2",
      "proper_name": "Enceladus",
      "body_type": "moon",
      "orbit_index": 2,
      "parent_body_id": "GJ0g",
      "inhabited": false,
      "population": 0,
      "mass_class": "dwarf",
      "surface_gravity": 0.01,
      "orbital_period_days": 1.4,
      "rotation_period_hours": 32.9,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "subsurface",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "cryovolcanic, subsurface ocean"
    },
    {
      "body_id": "GJ0h",
      "proper_name": "Uranus",
      "body_type": "gas_giant",
      "orbit_index": 8,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "ice_giant",
      "surface_gravity": null,
      "orbital_period_days": 30687,
      "rotation_period_hours": 17.2,
      "atmosphere": "dense",
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "ice giant, extreme axial tilt"
    },
    {
      "body_id": "GJ0i",
      "proper_name": "Neptune",
      "body_type": "gas_giant",
      "orbit_index": 9,
      "parent_body_id": null,
      "inhabited": false,
      "population": 0,
      "mass_class": "ice_giant",
      "surface_gravity": null,
      "orbital_period_days": 60190,
      "rotation_period_hours": 16.1,
      "atmosphere": "dense",
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "ice giant"
    },
    {
      "body_id": "GJ0-oort",
      "proper_name": null,
      "body_type": "oort_cloud",
      "orbit_index": 10,
      "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": "GJ0-oort-S1",
      "proper_name": "Horizon Station",
      "orbits_body_id": "GJ0-oort",
      "station_type": "horizon",
      "population": 0,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": true,
      "notes": "Sol aperture, Colonial Authority administered"
    }
  ]
}