{
  "system_id": "GJ 601A",
  "proper_name": "Ostmark",
  "star_type": "F",
  "spectral_class": "F2III",
  "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": "GJ601Ab",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 1,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.54,
      "orbital_period_days": 88.0,
      "rotation_period_hours": 18.2,
      "atmosphere": "none",
      "biome_summary": "barren",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "inner rocky, hot, uninhabited"
    },
    {
      "body_id": "GJ601Ac",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 2,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.78,
      "orbital_period_days": 320.0,
      "rotation_period_hours": 22.6,
      "atmosphere": "thin",
      "biome_summary": "hot_arid",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "inner rocky, hot, desiccated, uninhabited"
    },
    {
      "body_id": "GJ601Ad",
      "proper_name": "Rand",
      "body_type": "planet",
      "orbit_index": 3,
      "parent_body_id": null,
      "inhabited": true,
      "population": 85000000,
      "mass_class": "terrestrial",
      "surface_gravity": 0.98,
      "orbital_period_days": 920.0,
      "rotation_period_hours": 28.4,
      "atmosphere": "standard",
      "biome_summary": "temperate",
      "hydrosphere": "liquid_water",
      "economic_role": "agricultural",
      "settlement_pattern": "dispersed",
      "industrial_corridor": "agricultural_export",
      "notes": "primary inhabited world; wave_1 German heritage ('edge'); 2-aperture through_route; F2III bright giant — significantly more UV-intense than a main-sequence F; equatorial zones inhospitable without shielding, settlement concentrated in polar and high-latitude temperate regions; star is post-main-sequence and progressing toward giant phase on geological timescales, but current habitability is stable for millions of years; open-field agriculture with substantial surplus; light manufacturing (four centuries institutional investment); Council of Rand governance (nine seats, staggered terms, founding charter continuity); Compact of Westphalia founding member and treaty drafter; five centuries continuous self-governance; oldest governing body in outer west"
    },
    {
      "body_id": "GJ601A-belt",
      "proper_name": null,
      "body_type": "asteroid_belt",
      "orbit_index": 4,
      "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": "GJ601Ae",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 5,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.66,
      "orbital_period_days": 2200.0,
      "rotation_period_hours": 26.8,
      "atmosphere": "thin",
      "biome_summary": "cold_arid",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer rocky, uninhabited"
    },
    {
      "body_id": "GJ601Af",
      "proper_name": null,
      "body_type": "gas_giant",
      "orbit_index": 6,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": null,
      "surface_gravity": null,
      "orbital_period_days": 6800.0,
      "rotation_period_hours": 10.4,
      "atmosphere": "gas_giant",
      "biome_summary": null,
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer gas giant, two moons"
    },
    {
      "body_id": "GJ601Af-m1",
      "proper_name": null,
      "body_type": "moon",
      "orbit_index": 1,
      "parent_body_id": "GJ601Af",
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.14,
      "orbital_period_days": 7.2,
      "rotation_period_hours": 172.8,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "icy moon, tidally locked"
    },
    {
      "body_id": "GJ601Af-m2",
      "proper_name": null,
      "body_type": "moon",
      "orbit_index": 2,
      "parent_body_id": "GJ601Af",
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.08,
      "orbital_period_days": 15.8,
      "rotation_period_hours": 379.2,
      "atmosphere": null,
      "biome_summary": "barren",
      "hydrosphere": null,
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "small rocky moon, tidally locked"
    },
    {
      "body_id": "GJ601Ag",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 7,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.48,
      "orbital_period_days": 16000.0,
      "rotation_period_hours": 36.4,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outer icy rocky, uninhabited"
    },
    {
      "body_id": "GJ601Ah",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 8,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.38,
      "orbital_period_days": 36000.0,
      "rotation_period_hours": 44.8,
      "atmosphere": "trace",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "distant icy rocky, uninhabited"
    },
    {
      "body_id": "GJ601Ai",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 9,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "terrestrial",
      "surface_gravity": 0.28,
      "orbital_period_days": 72000.0,
      "rotation_period_hours": 52.4,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "far outer icy rocky, uninhabited"
    },
    {
      "body_id": "GJ601Aj",
      "proper_name": null,
      "body_type": "planet",
      "orbit_index": 10,
      "parent_body_id": null,
      "inhabited": false,
      "population": null,
      "mass_class": "dwarf",
      "surface_gravity": 0.13,
      "orbital_period_days": 140000.0,
      "rotation_period_hours": 32.6,
      "atmosphere": "none",
      "biome_summary": "frozen",
      "hydrosphere": "ice",
      "economic_role": null,
      "settlement_pattern": null,
      "industrial_corridor": null,
      "notes": "outermost dwarf, near oort boundary"
    },
    {
      "body_id": "GJ601A-oort",
      "proper_name": null,
      "body_type": "oort_cloud",
      "orbit_index": 11,
      "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": "GJ601A-oort-S1",
      "proper_name": "Ostmark Horizon",
      "orbits_body_id": "GJ601A-oort",
      "station_type": "horizon",
      "population": 680,
      "economic_role": "transit",
      "docking_class": "major",
      "has_gate_infrastructure": true,
      "notes": "horizon station — 2 apertures; through_route; connects Brückenau and Fernmark; Compact commercial coordination; deep corridor transit staging"
    },
    {
      "station_id": "GJ601Ad-S1",
      "proper_name": "Randwerk",
      "orbits_body_id": "GJ601Ad",
      "station_type": "industrial",
      "population": 4800,
      "economic_role": "manufacturing",
      "docking_class": "major",
      "has_gate_infrastructure": false,
      "notes": "light manufacturing complex; technical components, agricultural equipment, precision instruments; four centuries institutional investment; Compact-affiliated export coordination"
    }
  ]
}