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data(atlas): author GJ 875 (The Narrows) — deep_frontier

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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jpmschweitzer
2026-04-03 11:22:49 +02:00
co-authored by Claude Opus 4.6
parent f07913ab55
commit da59740ee7
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docs/atlas/proposals/GJ875.json
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{
"system_id": "GJ 875",
"proper_name": "The Narrows",
"star_type": "K",
"spectral_class": "K5V",
"wiki_data": {
"habitable_count": 1,
"inhabited_count": 0,
"has_gas_giant": false,
"has_asteroid_belt": true,
"has_horizon_station": true,
"raw_bodies_line": null
},
"bodies": [
{
"body_id": "GJ875b",
"proper_name": null,
"body_type": "planet",
"orbit_index": 1,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.40,
"orbital_period_days": 18.0,
"rotation_period_hours": 20.2,
"atmosphere": "none",
"biome_summary": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner rocky, hot, uninhabited"
},
{
"body_id": "GJ875c",
"proper_name": null,
"body_type": "planet",
"orbit_index": 2,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.72,
"orbital_period_days": 140.0,
"rotation_period_hours": 26.2,
"atmosphere": "thin",
"biome_summary": "cold_arid",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "HZ candidate; marginal atmosphere, no surface water; minerals adequate for local use only; surveys recommend transit corridor maintenance over settlement; unsettled"
},
{
"body_id": "GJ875-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 asteroid belt"
},
{
"body_id": "GJ875d",
"proper_name": null,
"body_type": "planet",
"orbit_index": 4,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.50,
"orbital_period_days": 440.0,
"rotation_period_hours": 26.8,
"atmosphere": "trace",
"biome_summary": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer rocky, frozen, uninhabited"
},
{
"body_id": "GJ875e",
"proper_name": null,
"body_type": "planet",
"orbit_index": 5,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.40,
"orbital_period_days": 1200.0,
"rotation_period_hours": 30.4,
"atmosphere": "trace",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer icy rocky, uninhabited"
},
{
"body_id": "GJ875f",
"proper_name": null,
"body_type": "planet",
"orbit_index": 6,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.30,
"orbital_period_days": 3400.0,
"rotation_period_hours": 36.2,
"atmosphere": "trace",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "distant icy rocky, uninhabited"
},
{
"body_id": "GJ875g",
"proper_name": null,
"body_type": "planet",
"orbit_index": 7,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.11,
"orbital_period_days": 8800.0,
"rotation_period_hours": 23.4,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outermost ice dwarf"
},
{
"body_id": "GJ875h",
"proper_name": null,
"body_type": "planet",
"orbit_index": 8,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.07,
"orbital_period_days": 22000.0,
"rotation_period_hours": 18.6,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "distant ice dwarf"
},
{
"body_id": "GJ875-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": "GJ875-oort-S1",
"proper_name": "The Narrows Horizon",
"orbits_body_id": "GJ875-oort",
"station_type": "horizon",
"population": 0,
"economic_role": "transit",
"docking_class": "major",
"has_gate_infrastructure": true,
"notes": "horizon station — 2 apertures; through_route; connects Paso Largo and deeper corridor; 'the squeeze' — transit path passes close to primary; automated; serviced by Paso Largo technical crews"
}
]
}
wiki/star-systems/GJ-875/index.md
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---
## 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 | `GJ875b` | — | planet | no | — | terrestrial | 0.40g | 18 | 20.2 | none | barren | — | — | — | — |
| 2 | `GJ875c` | — | planet | no | — | terrestrial | 0.72g | 140 | 26.2 | thin | cold_arid | — | — | — | — |
| 3 | `GJ875-belt` | — | asteroid_belt | no | — | — | — | — | — | — | — | — | — | — | — |
| 4 | `GJ875d` | — | planet | no | — | terrestrial | 0.50g | 440 | 26.8 | trace | frozen | — | — | — | — |
| 5 | `GJ875e` | — | planet | no | — | terrestrial | 0.40g | 1200 | 30.4 | trace | frozen | ice | — | — | — |
| 6 | `GJ875f` | — | planet | no | — | terrestrial | 0.30g | 3400 | 36.2 | trace | frozen | ice | — | — | — |
| 7 | `GJ875g` | — | planet | no | — | dwarf | 0.11g | 8800 | 23.4 | none | frozen | ice | — | — | — |
| 8 | `GJ875h` | — | planet | no | — | dwarf | 0.07g | 22000 | 18.6 | none | frozen | ice | — | — | — |
| 9 | `GJ875-oort` | — | oort_cloud | no | — | — | — | — | — | — | — | — | — | — | — |
### Stations & Facilities
| ID | Name | Type | Orbits | Population | Economy | Governance | Docking | Gate | Districts |
|---|---|---|---|---|---|---|---|---|---|
| `GJ875-oort-S1` | The Narrows Horizon | horizon | `GJ875-oort` | — | transit | — | major | yes | 1 |
## Topology
<!-- READ-ONLY — regenerated from star-map.json edges -->
- **Hop Distance from Gateway:** 14