Files
settled-reach/wiki/star-systems/GJ-201/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

6.3 KiB

GJ 201

GJ 201 | K-type | deep_frontier


System Profile

Star K2 · 45.9 ly
Bodies 0 habitable · 1 inhabited
Gates 3 aperture · junction
Settlement unsettled
Industries fusion_fuel, metallic_ore, financial_services, insurance, legal_services
Exports financial_services, legal_services
Imports processed_food, electronics, consumer_goods, medical_goods, refined_metals, heavy_equipment
Population —

GJ 201 is the only junction in this section of the deep frontier. Three apertures, three corridors, three directions that require a decision. The system itself offers nothing to inform that decision. A K2 primary, warm enough for marginal habitability, cool enough to discourage settlement by anyone with access to survey data that includes alternatives. A rocky inner world with trace atmosphere. An outer gas giant with two captured moons, neither interesting. The habitable zone contains a body whose survey record describes as "geologically stable, hydrologically inert, atmospherically adequate" — the kind of assessment that reads as complimentary only if you have never seen a genuinely good world.

Nobody settled GJ 201 because nobody needed to. The junction's function is directional, not residential. One aperture connects inward toward Fernlicht at GJ 61, where the scholars maintain their isolation and their libraries. A second runs toward GJ 684A and the deep corridor that eventually reaches the furthest systems in the Reach. The third connects to GJ 481 and the spur toward Errai. The horizon station processes transits. The station's maintenance logs are the most complete record of traffic patterns in this part of the frontier, and they tell a specific story: traffic is thin, directional, and purposeful. The people who pass through GJ 201 know where they are going. They do not stop.

The junction topology is the only remarkable feature. In the inner Reach, a three-aperture junction would be a hub — a natural site for a market, a Commission post, an administrative presence. At hop 13, three apertures connecting three corridors that each carry fewer than a hundred transits per standard year does not create the density required for any of those institutions. The junction exists. The corridors it connects exist. The traffic that passes through exists. None of it aggregates into settlement pressure.

Survey teams have visited GJ 201 four times across three centuries. Each survey confirmed what the previous survey found: adequate conditions, no compelling reason. The fourth survey, conducted during wave_4 expansion, added a note that has been quietly circulated among corridor planners: "Junction topology suggests potential strategic value if corridor traffic increases by an order of magnitude." The note was filed. Corridor traffic has not increased by an order of magnitude. The note remains filed.


Supply Dependency

None. The system has no population and no economic activity.


Faction Notes

No faction presence. The horizon station is automated. Gate Corporation maintenance visits occur on a rotating contract basis, approximately once per eighteen months — the longest rotation interval in the standard maintenance schedule, reserved for unsettled systems with multiple apertures that require more frequent gate calibration than single-aperture dead-ends but do not generate the traffic that justifies a permanent crew.


Silence Topic

Three corridors diverge here. One leads to the scholars at Fernlicht. One leads to the deep chain that ends at Abzu. One leads to the spur communities near Errai. The junction is the last shared node for travelers heading in any of these directions. What happens at GJ 201 is farewells — the kind that are not spoken, because the people transiting through a dim K-dwarf junction at hop 13 are not the kind who announce their intentions. They transit, they choose an aperture, and the junction's logs record the direction without comment.


Narrative Hook

A three-way junction at hop 13, unsettled and unremarkable, where every corridor leads somewhere that someone chose to go and no one chose to stay.


Celestial Bodies

Orbit ID Name Type Inhabited Pop Mass Gravity Year (d) Day (h) Atmo Class Hydro Economy Settlement Industrial
1 GJ201b — planet no — terrestrial 0.44g 28 20.2 trace barren — — — —
2 GJ201c — planet no — terrestrial 0.82g 200 26.4 standard cold_arid liquid_water — — —
3 GJ201-belt — asteroid_belt no — — — — — — — — — — —
4 GJ201d — planet no — terrestrial 0.58g 580 27.8 thin cold_arid — — — —
5 GJ201e — gas_giant no — — — 1900 12.4 gas_giant — — — — —
↳ 5.1 GJ201e-m1 — moon no — dwarf 0.10g 6 134.4 none frozen — — — —
↳ 5.2 GJ201e-m2 — moon no — dwarf 0.07g 13 316.8 none barren — — — —
6 GJ201f — planet no — terrestrial 0.44g 4800 34.6 trace frozen ice — — —
7 GJ201g — planet no — terrestrial 0.34g 11000 43.2 trace frozen ice — — —
8 GJ201h — planet no — dwarf 0.12g 26000 28.8 none frozen ice — — —
9 GJ201i — planet no — dwarf 0.08g 54000 23.2 none frozen ice — — —
10 GJ201-oort — oort_cloud no — — — — — — — — — — —

Stations & Facilities

ID Name Type Orbits Population Economy Governance Docking Gate Districts
GJ201-oort-S1 GJ 201 Horizon horizon GJ201-oort — transit — major yes 1

Topology

  • Hop Distance from Gateway: 13
  • Adjacent Systems: GJ 481, GJ 684A, GJ 61