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data(atlas): author GJ 191 (Kapteyn's Star) — west_reach

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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jpmschweitzer
2026-03-29 18:18:02 +02:00
co-authored by Claude Opus 4.6
parent 0177940207
commit 11a72801d9
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docs/atlas/proposals/GJ191.json
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{
"system_id": "GJ 191",
"proper_name": "Kapteyn's Star",
"star_type": "M",
"spectral_class": "M0V",
"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": "GJ191b",
"proper_name": null,
"body_type": "planet",
"orbit_index": 1,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.35,
"orbital_period_days": 8.4,
"rotation_period_hours": 201.6,
"atmosphere": "none",
"biome_summary": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner scorched rocky, tidally locked"
},
{
"body_id": "GJ191c",
"proper_name": "Kapteyn's Star",
"body_type": "planet",
"orbit_index": 2,
"parent_body_id": null,
"inhabited": true,
"population": 160000,
"mass_class": "terrestrial",
"surface_gravity": 0.84,
"orbital_period_days": 70.0,
"rotation_period_hours": 1680.0,
"atmosphere": "standard",
"biome_summary": "temperate_terminator",
"hydrosphere": "liquid_water",
"economic_role": "transit",
"settlement_pattern": "urban_concentrated",
"industrial_corridor": "logistics",
"notes": "primary inhabited world; tidally locked; wave_4 retained astronomical catalog name (Dutch heritage); 3-aperture junction; chokepoint between Ross 154 and Hansestadt; transit services economy: fuel bunkering, crew rotation, freight consolidation; Transit Authority + civic council dual governance; Gate Corporation operational base; Hansestadt Merchant Assembly permanent trade mission"
},
{
"body_id": "GJ191-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": "GJ191d",
"proper_name": null,
"body_type": "planet",
"orbit_index": 4,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.48,
"orbital_period_days": 280.0,
"rotation_period_hours": 22.8,
"atmosphere": "thin",
"biome_summary": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer rocky, cold, uninhabited"
},
{
"body_id": "GJ191e",
"proper_name": null,
"body_type": "gas_giant",
"orbit_index": 5,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": null,
"surface_gravity": null,
"orbital_period_days": 920.0,
"rotation_period_hours": 11.8,
"atmosphere": "gas_giant",
"biome_summary": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer gas giant, one moon"
},
{
"body_id": "GJ191e-m1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ191e",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.11,
"orbital_period_days": 5.6,
"rotation_period_hours": 134.4,
"atmosphere": null,
"biome_summary": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "small icy moon, tidally locked"
},
{
"body_id": "GJ191f",
"proper_name": null,
"body_type": "planet",
"orbit_index": 6,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.38,
"orbital_period_days": 2400.0,
"rotation_period_hours": 32.6,
"atmosphere": "trace",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer icy rocky, uninhabited"
},
{
"body_id": "GJ191g",
"proper_name": null,
"body_type": "planet",
"orbit_index": 7,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.29,
"orbital_period_days": 5800.0,
"rotation_period_hours": 40.4,
"atmosphere": "trace",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "distant icy rocky, uninhabited"
},
{
"body_id": "GJ191h",
"proper_name": null,
"body_type": "planet",
"orbit_index": 8,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.11,
"orbital_period_days": 12600.0,
"rotation_period_hours": 27.8,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outermost ice dwarf"
},
{
"body_id": "GJ191-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": "GJ191-oort-S1",
"proper_name": "Kapteyn's Star Horizon",
"orbits_body_id": "GJ191-oort",
"station_type": "horizon",
"population": 2400,
"economic_role": "transit",
"docking_class": "major",
"has_gate_infrastructure": true,
"notes": "horizon station — 3 apertures; junction; connects Ross 154, Hansestadt, and Port Mäkelä; Gate Corporation operational base"
}
]
}
wiki/star-systems/GJ-191/index.md
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@@ -46,6 +46,28 @@ The junction between Ross 154 and Hansestadt sees more west_reach freight than a
`wave_4` at hop 4 is later than the junction's transit importance might suggest, which reflects a characteristic of west_reach junction systems: the gate topology was determined before the settlements, and some high-value positions were reached late because the early settlers followed cultural and economic networks rather than pure topological optimization. The Hansestadt and Ross 154 adjacency gives Kapteyn's Star its significance; that adjacency was determined by the alien gate builders and became commercially legible only when traffic volumes built up. The retention of the astronomical catalog name is realistic — transit operators already knew it by that name, and renaming would have required updating documentation across the corridor. The Dutch scientific heritage of the name fits the west_reach's Germanic/Dutch cultural tendency without being a settlement-name transplant.
## 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 | `GJ191b` | — | planet | no | — | terrestrial | 0.35g | 8 | 201.6 | none | barren | — | — | — | — |
| 2 | `GJ191c` | Kapteyn's Star | planet | yes | 160K | terrestrial | 0.84g | 70 | 1680.0 | standard | temperate_terminator | liquid_water | transit | urban_concentrated | logistics |
| 3 | `GJ191-belt` | — | asteroid_belt | no | — | — | — | — | — | — | — | — | — | — | — |
| 4 | `GJ191d` | — | planet | no | — | terrestrial | 0.48g | 280 | 22.8 | thin | frozen | — | — | — | — |
| 5 | `GJ191e` | — | gas_giant | no | — | — | — | 920 | 11.8 | gas_giant | — | — | — | — | — |
| ↳ 5.1 | `GJ191e-m1` | — | moon | no | — | dwarf | 0.11g | 6 | 134.4 | — | frozen | — | — | — | — |
| 6 | `GJ191f` | — | planet | no | — | terrestrial | 0.38g | 2400 | 32.6 | trace | frozen | ice | — | — | — |
| 7 | `GJ191g` | — | planet | no | — | terrestrial | 0.29g | 5800 | 40.4 | trace | frozen | ice | — | — | — |
| 8 | `GJ191h` | — | planet | no | — | dwarf | 0.11g | 12600 | 27.8 | none | frozen | ice | — | — | — |
| 9 | `GJ191-oort` | — | oort_cloud | no | — | — | — | — | — | — | — | — | — | — | — |
### Stations & Facilities
| ID | Name | Type | Orbits | Population | Economy | Governance | Docking | Gate | Districts |
|---|---|---|---|---|---|---|---|---|---|
| `GJ191-oort-S1` | Kapteyn's Star Horizon | horizon | `GJ191-oort` | 2K | transit | — | major | yes | 1 |
## Topology
<!-- READ-ONLY — regenerated from star-map.json edges -->
- **Hop Distance from Gateway:** 4