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data(atlas): author GJ 661B (Breëvlei) — north_reach

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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jpmschweitzer
2026-04-01 08:47:44 +02:00
co-authored by Claude Opus 4.6
parent 269afa6659
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docs/atlas/proposals/GJ661B.json
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{
"system_id": "GJ 661B",
"proper_name": "Breëvlei",
"star_type": "F",
"spectral_class": "F7V",
"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": "GJ661Bb",
"proper_name": null,
"body_type": "planet",
"orbit_index": 1,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.52,
"orbital_period_days": 68.0,
"rotation_period_hours": 17.8,
"atmosphere": "none",
"biome_summary": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner rocky, hot, uninhabited"
},
{
"body_id": "GJ661Bc",
"proper_name": null,
"body_type": "planet",
"orbit_index": 2,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.74,
"orbital_period_days": 260.0,
"rotation_period_hours": 23.4,
"atmosphere": "thin",
"biome_summary": "hot_arid",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner rocky, desiccated, uninhabited"
},
{
"body_id": "GJ661Bd",
"proper_name": "Velddrif",
"body_type": "planet",
"orbit_index": 3,
"parent_body_id": null,
"inhabited": true,
"population": 3500,
"mass_class": "terrestrial",
"surface_gravity": 0.92,
"orbital_period_days": 620.0,
"rotation_period_hours": 27.2,
"atmosphere": "standard",
"biome_summary": "temperate",
"hydrosphere": "liquid_water",
"economic_role": "agricultural",
"settlement_pattern": "dispersed",
"industrial_corridor": null,
"notes": "primary inhabited world; wave_5 Afrikaans heritage ('field ford'); 2-aperture through_route; F7V blue-white bright star — sharp light, settlers adapted; broad tidal lowlands and marsh; settlement on tidal shelf zones; agriculture growing but not yet exportable surplus; settlement council governance (consensus-based); Commission visits infrequently; undeveloped marsh lowlands under ongoing debate"
},
{
"body_id": "GJ661B-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": "GJ661Be",
"proper_name": null,
"body_type": "planet",
"orbit_index": 5,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.64,
"orbital_period_days": 1400.0,
"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": "GJ661Bf",
"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": 4600.0,
"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": "GJ661Bf-m1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ661Bf",
"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": "GJ661Bf-m2",
"proper_name": null,
"body_type": "moon",
"orbit_index": 2,
"parent_body_id": "GJ661Bf",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.08,
"orbital_period_days": 16.4,
"rotation_period_hours": 393.6,
"atmosphere": "none",
"biome_summary": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "small rocky moon, tidally locked"
},
{
"body_id": "GJ661Bg",
"proper_name": null,
"body_type": "planet",
"orbit_index": 7,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.46,
"orbital_period_days": 11000.0,
"rotation_period_hours": 35.6,
"atmosphere": "trace",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer icy rocky, uninhabited"
},
{
"body_id": "GJ661Bh",
"proper_name": null,
"body_type": "planet",
"orbit_index": 8,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.36,
"orbital_period_days": 26000.0,
"rotation_period_hours": 44.2,
"atmosphere": "trace",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "distant icy rocky, uninhabited"
},
{
"body_id": "GJ661Bi",
"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": 54000.0,
"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": "GJ661Bj",
"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": 110000.0,
"rotation_period_hours": 30.4,
"atmosphere": "none",
"biome_summary": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outermost dwarf, near oort boundary"
},
{
"body_id": "GJ661B-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": "GJ661B-oort-S1",
"proper_name": "Breëvlei Horizon",
"orbits_body_id": "GJ661B-oort",
"station_type": "horizon",
"population": 120,
"economic_role": "transit",
"docking_class": "major",
"has_gate_infrastructure": true,
"notes": "horizon station — 2 apertures; through_route; connects Waterkant and Stilwater; Cairn pocket chain relay; Commission nominal authority"
}
]
}
wiki/star-systems/GJ-661B/index.md
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Wave_5 on a through_route at hop 6 is consistent with incremental corridor extension; Breëvlei is a relay point being settled ahead of the infrastructure fully arriving.
## 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 | `GJ661Bb` | — | planet | no | — | terrestrial | 0.52g | 68 | 17.8 | none | barren | — | — | — | — |
| 2 | `GJ661Bc` | — | planet | no | — | terrestrial | 0.74g | 260 | 23.4 | thin | hot_arid | — | — | — | — |
| 3 | `GJ661Bd` | Velddrif | planet | yes | 3K | terrestrial | 0.92g | 620 | 27.2 | standard | temperate | liquid_water | agricultural | dispersed | — |
| 4 | `GJ661B-belt` | — | asteroid_belt | no | — | — | — | — | — | — | — | — | — | — | — |
| 5 | `GJ661Be` | — | planet | no | — | terrestrial | 0.64g | 1400 | 26.8 | thin | cold_arid | — | — | — | — |
| 6 | `GJ661Bf` | — | gas_giant | no | — | — | — | 4600 | 10.4 | gas_giant | — | — | — | — | — |
| ↳ 6.1 | `GJ661Bf-m1` | — | moon | no | — | dwarf | 0.14g | 7 | 172.8 | trace | frozen | — | — | — | — |
| ↳ 6.2 | `GJ661Bf-m2` | — | moon | no | — | dwarf | 0.08g | 16 | 393.6 | none | barren | — | — | — | — |
| 7 | `GJ661Bg` | — | planet | no | — | terrestrial | 0.46g | 11000 | 35.6 | trace | frozen | ice | — | — | — |
| 8 | `GJ661Bh` | — | planet | no | — | terrestrial | 0.36g | 26000 | 44.2 | trace | frozen | ice | — | — | — |
| 9 | `GJ661Bi` | — | planet | no | — | terrestrial | 0.28g | 54000 | 52.4 | none | frozen | ice | — | — | — |
| 10 | `GJ661Bj` | — | planet | no | — | dwarf | 0.13g | 110000 | 30.4 | none | frozen | ice | — | — | — |
| 11 | `GJ661B-oort` | — | oort_cloud | no | — | — | — | — | — | — | — | — | — | — | — |
### Stations & Facilities
| ID | Name | Type | Orbits | Population | Economy | Governance | Docking | Gate | Districts |
|---|---|---|---|---|---|---|---|---|---|
| `GJ661B-oort-S1` | Breëvlei Horizon | horizon | `GJ661B-oort` | 120 | transit | — | major | yes | 1 |
## Topology
<!-- READ-ONLY — regenerated from star-map.json edges -->
- **Hop Distance from Gateway:** 6