Files
settled-reach/wiki/star-systems/GJ-434/index.md
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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

4.7 KiB

GJ 434

GJ 434 | M-type | east_reach


System Profile

Star M1Vvar · 31.3 ly
Bodies 0 habitable · 1 inhabited
Gates 2 aperture · spur_end
Settlement unsettled
Industries metallic_ore, lattice_grade_material, hospitality, financial_services, legal_services
Exports lattice_grade_material, financial_services
Imports processed_food, electronics, consumer_goods, medical_goods, fusion_fuel, refined_metals
Population —

GJ 434 is an empty spur off Taishan (GJ 682) — two apertures, one connecting back toward Taishan, one reaching out toward GJ 117 beyond. The star is a variable M-dwarf with periodic activity cycles that produce significant flare activity. Surveys flagged this as a complicating factor for surface settlement — radiation exposure during flare events requires shielding infrastructure that raises costs and extends timelines.

Nobody has yet decided the system is worth that investment. Taishan is an established junction that handles significant east_reach traffic, and GJ 434 sits off its shoulder like an afterthought — a spur that goes nowhere permanently inhabited. The gate infrastructure exists because the survey program extended it as a matter of procedure; the route through GJ 117 was part of a corridor mapping pass that never prompted settlement activity.

The system sees occasional transit — scientific vessels, survey runs, traffic moving between GJ 117 and Taishan that chooses this routing over alternatives. It is not heavily traveled. The star's flare cycles are predictable enough to schedule around, and most captains do exactly that: check the cycle tables, route through during a quiet period, don't linger.

Supply Dependency

None. No population, no extractable resource under active development.

Faction Notes

No faction presence. The apertures are Commission-registered and the in-system navigation beacons are maintained on a schedule nominally managed through Taishan's transit authority.

Silence Topic

Not applicable — no population to keep silence.

Narrative Hook

A research vessel undertaking stellar activity studies has been parked in a high-orbit station here for three years — significantly longer than its original survey mandate specified, and without updated Commission authorization for the extended stay.

Calibration Note

Unsettled spur_end at hop 6 adjacent to a major east_reach junction reflects the survey-ahead-of-settlement pattern common in east_reach development. The variable star is a plausible settlement barrier.

The second inner planet Banteay (Khmer: 'citadel' — the fortified waystation of Angkor-era settlement practice) was named by a Khmer-heritage survey team working the Taishan spur extensions. The name is a record of passage: the team noted the planet as a potential future waystation given its orbital geometry, applied the word for a fortified stopping point, and continued outward. Nobody has built a citadel here. The name is still on the charts.

Celestial Bodies

Orbit ID Name Type Inhabited Pop Mass Gravity Year (d) Day (h) Atmo Class Hydro Economy Settlement Industrial
1 GJ434b — planet no — terrestrial 0.38g 10 240.0 none barren — — — —
2 GJ434c Banteay planet no — terrestrial 0.68g 56 24.8 thin cold_arid — — — —
3 GJ434-belt — asteroid_belt no — — — — — — — — — — —
4 GJ434d — planet no — terrestrial 0.44g 180 26.2 trace frozen — — — —
5 GJ434e — planet no — terrestrial 0.34g 540 30.4 trace frozen ice — — —
6 GJ434f — planet no — dwarf 0.11g 1600 21.4 none frozen ice — — —
7 GJ434g — planet no — dwarf 0.07g 4200 17.2 none frozen ice — — —
8 GJ434-oort — oort_cloud no — — — — — — — — — — —

Stations & Facilities

ID Name Type Orbits Population Economy Governance Docking Gate Districts
GJ434-oort-S1 GJ 434 Horizon horizon GJ434-oort — transit — major yes 1

Topology

  • Hop Distance from Gateway: 6
  • Adjacent Systems: GJ 117, GJ 682