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data(atlas): author GJ 42 (Langemark) — west_reach

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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jpmschweitzer
2026-03-30 12:33:05 +02:00
co-authored by Claude Opus 4.6
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docs/atlas/proposals/GJ42.json
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{
"system_id": "GJ 42",
"proper_name": "Langemark",
"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": "GJ42b",
"proper_name": null,
"body_type": "planet",
"orbit_index": 1,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.64,
"orbital_period_days": 52.0,
"rotation_period_hours": 1248.0,
"atmosphere": "none",
"biome_summary": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner rocky; tidally locked at 52-day period × 24 = 1248h rotation; heavily irradiated dayside; no atmosphere"
},
{
"body_id": "GJ42c",
"proper_name": "Poperinge",
"body_type": "planet",
"orbit_index": 2,
"parent_body_id": null,
"inhabited": true,
"population": 55000,
"mass_class": "terrestrial",
"surface_gravity": 0.89,
"orbital_period_days": 200.0,
"rotation_period_hours": 24.8,
"atmosphere": "breathable",
"biome_summary": "temperate",
"hydrosphere": "rivers-lakes",
"economic_role": "agricultural",
"settlement_pattern": "distributed-rural",
"industrial_corridor": "west_reach",
"notes": "primary inhabited world; K2V habitable zone; genuine agricultural potential found by founding pastoral cooperative; temperate conditions, good soil, river-valley farmland; Wave 3 settlement ~300 years old; population peaked ~80 years ago and in slow consistent decline as young adults leave for inner-corridor systems offering more economic variety; self-governing council of landholders (reformed ~150 years ago to include non-agricultural members); no Assembly or Compact presence; Gate Corporation maintenance rotation is extent of institutional contact"
},
{
"body_id": "GJ42c-1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ42c",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.07,
"orbital_period_days": 21.4,
"rotation_period_hours": 513.6,
"atmosphere": "none",
"biome_summary": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "Poperinge's single moon; tidally locked; used in local calendar reckoning by farming community"
},
{
"body_id": "GJ42d",
"proper_name": null,
"body_type": "planet",
"orbit_index": 3,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.52,
"orbital_period_days": 510.0,
"rotation_period_hours": 21.2,
"atmosphere": "thin",
"biome_summary": "arid",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "dry rocky world beyond habitable zone; thin atmosphere; polar ice caps; surveyed early settlement era, no viable resource concentration found"
},
{
"body_id": "GJ42-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 main belt; early prospectors found insufficient concentration for cooperative extraction economics; no active operations"
},
{
"body_id": "GJ42e",
"proper_name": null,
"body_type": "gas_giant",
"orbit_index": 5,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "gas_giant",
"surface_gravity": 2.1,
"orbital_period_days": 2200.0,
"rotation_period_hours": 11.4,
"atmosphere": "hydrogen-helium",
"biome_summary": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "mid-system gas giant; amber-tan banding; no active resource extraction"
},
{
"body_id": "GJ42e-1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ42e",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.08,
"orbital_period_days": 12.6,
"rotation_period_hours": 302.4,
"atmosphere": "none",
"biome_summary": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner gas giant moon; dark cratered surface"
},
{
"body_id": "GJ42e-2",
"proper_name": null,
"body_type": "moon",
"orbit_index": 2,
"parent_body_id": "GJ42e",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.06,
"orbital_period_days": 27.8,
"rotation_period_hours": 667.2,
"atmosphere": "none",
"biome_summary": "ice",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer gas giant moon; icy surface; subsurface ice confirmed"
},
{
"body_id": "GJ42f",
"proper_name": null,
"body_type": "planet",
"orbit_index": 6,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.42,
"orbital_period_days": 5800.0,
"rotation_period_hours": 18.4,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer ice-rock world; methane frost surface; uninhabited"
},
{
"body_id": "GJ42g",
"proper_name": null,
"body_type": "planet",
"orbit_index": 7,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.07,
"orbital_period_days": 14000.0,
"rotation_period_hours": 14.2,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer ice dwarf; trans-neptunian analog"
},
{
"body_id": "GJ42h",
"proper_name": null,
"body_type": "planet",
"orbit_index": 8,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.05,
"orbital_period_days": 31000.0,
"rotation_period_hours": 11.8,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "distant outer ice dwarf; scattered disk object"
},
{
"body_id": "GJ42i",
"proper_name": null,
"body_type": "planet",
"orbit_index": 9,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.04,
"orbital_period_days": 58000.0,
"rotation_period_hours": 10.2,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "extreme outer ice dwarf; detached scattered-disk object"
},
{
"body_id": "GJ42-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; gate infrastructure sited here"
}
],
"stations": [
{
"station_id": "GJ42-oort-S1",
"proper_name": "Langemark Horizon",
"orbits_body_id": "GJ42-oort",
"station_type": "horizon",
"population": 2000,
"economic_role": "transit",
"docking_class": "major",
"has_gate_infrastructure": true,
"notes": "two-aperture through-route horizon station; maintained under standing 10-year commercial agreement with Gate Corporation; Gate Corp maintenance team rotates every 14 months; modest permanent crew handles transit scheduling and corridor resupply; connects Echternach inbound and Bout du Chemin outbound; deliberate non-growth policy — council views the station as infrastructure, not community expansion"
}
]
}
wiki/star-systems/GJ-42/index.md
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`wave_3` at hop 14 reflects genuine early deep-frontier push by a small cooperative that followed the gate path as far as it went and stopped where they found what they wanted. The K2V star is standard — the system's interest is historical and social, not environmental. `through_route` topology with two gates means Langemark is on a path to GJ 282A, which means something is further out; the existence of GJ 529 beyond this chain makes Langemark's "edge of the map" character only relative — there is one more hop beyond. The name "Langemark" is a genuine WWI battlefield name used here as a founding-generation personal-heritage choice, providing Germanic corridor consistency and a specific kind of historical weight without being a German city name transplanted wholesale.
## Celestial Bodies
<!-- READ-ONLY — generated from systems.db bodies/stations tables -->
| Orbit | ID | Name | Type | Inhabited | Pop | Mass | Gravity | Year (d) | Day (h) | Atmo | Biome | Hydro | Economy | Settlement | Industrial |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | `GJ42b` | — | planet | no | — | terrestrial | 0.64g | 52 | 1248.0 | none | barren | — | — | — | — |
| 2 | `GJ42c` | Poperinge | planet | yes | 55K | terrestrial | 0.89g | 200 | 24.8 | breathable | temperate | rivers-lakes | agricultural | distributed-rural | west_reach |
| ↳ 2.1 | `GJ42c-1` | — | moon | no | — | dwarf | 0.07g | 21 | 513.6 | none | barren | — | — | — | — |
| 3 | `GJ42d` | — | planet | no | — | terrestrial | 0.52g | 510 | 21.2 | thin | arid | — | — | — | — |
| 4 | `GJ42-belt` | — | asteroid_belt | no | — | — | — | — | — | — | — | — | — | — | — |
| 5 | `GJ42e` | — | gas_giant | no | — | gas_giant | 2.10g | 2200 | 11.4 | hydrogen-helium | — | — | — | — | — |
| ↳ 5.1 | `GJ42e-1` | — | moon | no | — | dwarf | 0.08g | 13 | 302.4 | none | barren | — | — | — | — |
| ↳ 5.2 | `GJ42e-2` | — | moon | no | — | dwarf | 0.06g | 28 | 667.2 | none | ice | — | — | — | — |
| 6 | `GJ42f` | — | planet | no | — | terrestrial | 0.42g | 5800 | 18.4 | none | frozen | — | — | — | — |
| 7 | `GJ42g` | — | planet | no | — | dwarf | 0.07g | 14000 | 14.2 | none | frozen | — | — | — | — |
| 8 | `GJ42h` | — | planet | no | — | dwarf | 0.05g | 31000 | 11.8 | none | frozen | — | — | — | — |
| 9 | `GJ42i` | — | planet | no | — | dwarf | 0.04g | 58000 | 10.2 | none | frozen | — | — | — | — |
| 10 | `GJ42-oort` | — | oort_cloud | no | — | — | — | — | — | — | — | — | — | — | — |
### Stations & Facilities
| ID | Name | Type | Orbits | Population | Economy | Governance | Docking | Gate | Districts |
|---|---|---|---|---|---|---|---|---|---|
| `GJ42-oort-S1` | Langemark Horizon | horizon | `GJ42-oort` | 2K | transit | — | major | yes | 1 |
## Topology
<!-- READ-ONLY — regenerated from star-map.json edges -->
- **Hop Distance from Gateway:** 14