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settled-reach/docs/atlas/proposals/GJ127B.json
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jpmschweitzerandClaude Opus 4.6 db241b88bd refactor(schema): rename biome_summary to planet_class (D-188) 
"Biome" describes per-zone vegetation classification (Whittaker table).
"Planet class" describes overall planetary character. The conflation
caused the planet generator to misclassify ~270 bodies as barren.

Scope: systems.db column, schema SQL, Rust atlas code, wiki table
headers (Biome → Class), atlas proposal JSONs, all docs/decisions,
tooling scripts. Also normalizes atmosphere vocabulary (breathable →
standard) and expands planet class mapping to all 26 wiki values.
Unknown classes default to temperate for modder safety.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-04-06 17:10:35 +02:00

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{
"system_id": "GJ 127B",
"proper_name": "Echternach",
"star_type": "G",
"spectral_class": "G7 V",
"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": "GJ127Bb",
"proper_name": null,
"body_type": "planet",
"orbit_index": 1,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.72,
"orbital_period_days": 92.0,
"rotation_period_hours": 2208.0,
"atmosphere": "none",
"planet_class": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner rocky; tidally locked at 92-day period × 24 = 2208h rotation; heavily cratered silicate surface; no atmosphere"
},
{
"body_id": "GJ127Bc",
"proper_name": "Wiltz",
"body_type": "planet",
"orbit_index": 2,
"parent_body_id": null,
"inhabited": true,
"population": 85000,
"mass_class": "terrestrial",
"surface_gravity": 0.94,
"orbital_period_days": 320.0,
"rotation_period_hours": 26.4,
"atmosphere": "breathable",
"planet_class": "temperate-cool",
"hydrosphere": "rivers-lakes",
"economic_role": "mixed-agriculture",
"settlement_pattern": "distributed-rural",
"industrial_corridor": "west_reach",
"notes": "primary inhabited world; outer edge of habitable zone yields cooler temperatures, longer winters, shorter growing seasons consistent with Luxembourgish-heritage founding community character; Wave 2 settlement ~400 years old; population in slow multi-generational decline (down from estimated peak ~110,000); river-valley settlements; handcraft and small-batch manufactured exports valued in corridor collector communities; imports medical hardware and high-precision components; administrative council the effective government"
},
{
"body_id": "GJ127Bc-1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ127Bc",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.06,
"orbital_period_days": 18.2,
"rotation_period_hours": 436.8,
"atmosphere": "none",
"planet_class": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "Wiltz's single moon; tidally locked; prominent in local calendar reckoning; named informally in community usage but no formal designation"
},
{
"body_id": "GJ127Bd",
"proper_name": null,
"body_type": "planet",
"orbit_index": 3,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.58,
"orbital_period_days": 710.0,
"rotation_period_hours": 22.6,
"atmosphere": "thin",
"planet_class": "arid",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "dry rocky world beyond habitable zone; thin CO2 atmosphere; polar surface ice deposits; no settlement"
},
{
"body_id": "GJ127B-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,
"planet_class": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "moderate-density main belt; no established extraction operations; occasional community survey passes"
},
{
"body_id": "GJ127Be",
"proper_name": null,
"body_type": "gas_giant",
"orbit_index": 5,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "gas_giant",
"surface_gravity": 2.4,
"orbital_period_days": 3100.0,
"rotation_period_hours": 10.2,
"atmosphere": "hydrogen-helium",
"planet_class": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "cold gas giant; pale banding; no active resource extraction"
},
{
"body_id": "GJ127Be-1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ127Be",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.09,
"orbital_period_days": 13.8,
"rotation_period_hours": 331.2,
"atmosphere": "none",
"planet_class": "barren",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner gas giant moon; cratered dark surface"
},
{
"body_id": "GJ127Be-2",
"proper_name": null,
"body_type": "moon",
"orbit_index": 2,
"parent_body_id": "GJ127Be",
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.07,
"orbital_period_days": 29.4,
"rotation_period_hours": 705.6,
"atmosphere": "none",
"planet_class": "ice",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer gas giant moon; icy surface; possible subsurface water-ice"
},
{
"body_id": "GJ127Bf",
"proper_name": null,
"body_type": "planet",
"orbit_index": 6,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "terrestrial",
"surface_gravity": 0.44,
"orbital_period_days": 7400.0,
"rotation_period_hours": 19.8,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer ice-rock world; nitrogen-methane frost; uninhabited"
},
{
"body_id": "GJ127Bg",
"proper_name": null,
"body_type": "planet",
"orbit_index": 7,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.08,
"orbital_period_days": 17200.0,
"rotation_period_hours": 15.6,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer ice dwarf; trans-neptunian analog"
},
{
"body_id": "GJ127Bh",
"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": 34000.0,
"rotation_period_hours": 12.4,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "distant outer ice dwarf"
},
{
"body_id": "GJ127Bi",
"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": 62000.0,
"rotation_period_hours": 11.0,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "very distant outer ice dwarf; scattered disk object"
},
{
"body_id": "GJ127Bj",
"proper_name": null,
"body_type": "planet",
"orbit_index": 10,
"parent_body_id": null,
"inhabited": false,
"population": null,
"mass_class": "dwarf",
"surface_gravity": 0.03,
"orbital_period_days": 105000.0,
"rotation_period_hours": 9.8,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "extreme outer ice dwarf; detached scattered-disk object"
},
{
"body_id": "GJ127B-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,
"planet_class": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "oort cloud; gate infrastructure sited here"
}
],
"stations": [
{
"station_id": "GJ127B-oort-S1",
"proper_name": "Sauer Horizon",
"orbits_body_id": "GJ127B-oort",
"station_type": "horizon",
"population": 4500,
"economic_role": "transit",
"docking_class": "major",
"has_gate_infrastructure": true,
"notes": "two-aperture through-route horizon station; named for the Sauer River of the Luxembourgish homeland preserved in Echternach community memory; working relationship with Alshain transit authority for inbound aperture and Bout du Chemin equivalent for outbound; modest transit traffic volume; operates as community annex rather than commercial hub; administrative council coordinates scheduling and access agreements"
}
]
}
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