diff --git a/docs/atlas/proposals/GJ309.json b/docs/atlas/proposals/GJ309.json
new file mode 100644
index 000000000..29d9cdc3e
--- /dev/null
+++ b/docs/atlas/proposals/GJ309.json
@@ -0,0 +1,249 @@
+{
+  "system_id": "GJ 309",
+  "proper_name": "Vorposten",
+  "star_type": "K",
+  "spectral_class": "K0V",
+  "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": "GJ309b",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 1,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.44,
+      "orbital_period_days": 30.0,
+      "rotation_period_hours": 19.4,
+      "atmosphere": "none",
+      "biome_summary": "barren",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "inner rocky, hot, uninhabited"
+    },
+    {
+      "body_id": "GJ309c",
+      "proper_name": "Freystadt",
+      "body_type": "planet",
+      "orbit_index": 2,
+      "parent_body_id": null,
+      "inhabited": true,
+      "population": 2000,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.9,
+      "orbital_period_days": 280.0,
+      "rotation_period_hours": 26.4,
+      "atmosphere": "standard",
+      "biome_summary": "temperate",
+      "hydrosphere": "liquid_water",
+      "economic_role": "agricultural",
+      "settlement_pattern": "dispersed",
+      "industrial_corridor": null,
+      "notes": "primary inhabited world; wave_5 German heritage ('outpost'); 2-aperture through_route; K0V stable star; early-generation K-type agriculture (not yet self-sufficient); Compact of Westphalia founding instincts (mutual recognition, minimal external obligations); community compact governance; Compact agricultural consultation and equipment support (time-limited); Commission registration filed but no visit"
+    },
+    {
+      "body_id": "GJ309-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": "GJ309d",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 4,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.58,
+      "orbital_period_days": 720.0,
+      "rotation_period_hours": 27.8,
+      "atmosphere": "thin",
+      "biome_summary": "cold_arid",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outer rocky, cold, uninhabited"
+    },
+    {
+      "body_id": "GJ309e",
+      "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": 2200.0,
+      "rotation_period_hours": 11.4,
+      "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": "GJ309e-m1",
+      "proper_name": null,
+      "body_type": "moon",
+      "orbit_index": 1,
+      "parent_body_id": "GJ309e",
+      "inhabited": false,
+      "population": null,
+      "mass_class": "dwarf",
+      "surface_gravity": 0.11,
+      "orbital_period_days": 5.6,
+      "rotation_period_hours": 134.4,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "icy moon, tidally locked"
+    },
+    {
+      "body_id": "GJ309f",
+      "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": 5400.0,
+      "rotation_period_hours": 34.6,
+      "atmosphere": "trace",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outer icy rocky, uninhabited"
+    },
+    {
+      "body_id": "GJ309g",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 7,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.34,
+      "orbital_period_days": 12400.0,
+      "rotation_period_hours": 42.6,
+      "atmosphere": "trace",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "distant icy rocky, uninhabited"
+    },
+    {
+      "body_id": "GJ309h",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 8,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.26,
+      "orbital_period_days": 26000.0,
+      "rotation_period_hours": 50.4,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "far outer icy rocky, uninhabited"
+    },
+    {
+      "body_id": "GJ309i",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 9,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "dwarf",
+      "surface_gravity": 0.12,
+      "orbital_period_days": 54000.0,
+      "rotation_period_hours": 29.2,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outermost dwarf, near oort boundary"
+    },
+    {
+      "body_id": "GJ309-oort",
+      "proper_name": null,
+      "body_type": "oort_cloud",
+      "orbit_index": 10,
+      "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": "GJ309-oort-S1",
+      "proper_name": "Vorposten Horizon",
+      "orbits_body_id": "GJ309-oort",
+      "station_type": "horizon",
+      "population": 140,
+      "economic_role": "transit",
+      "docking_class": "major",
+      "has_gate_infrastructure": true,
+      "notes": "horizon station — 2 apertures; through_route; connects Weitblick and Randgebiet; Compact settlement support coordination; first-generation infrastructure still building"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/wiki/star-systems/GJ-309/index.md b/wiki/star-systems/GJ-309/index.md
index 5db39e091..f76adf210 100644
--- a/wiki/star-systems/GJ-309/index.md
+++ b/wiki/star-systems/GJ-309/index.md
@@ -38,6 +38,29 @@ They are at enough distance and early enough in their institutional development
 
 Vorposten's founding cohort carries Compact of Westphalia political instincts and has already begun making governance decisions the Compact's consensus framework didn't sanction; the community hasn't mentioned this to the Compact, and the distance makes it easy to not mention.
 
+## 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 | `GJ309b` | — | planet | no | — | terrestrial | 0.44g | 30 | 19.4 | none | barren | — | — | — | — |
+| 2 | `GJ309c` | Freystadt | planet | yes | 2K | terrestrial | 0.90g | 280 | 26.4 | standard | temperate | liquid_water | agricultural | dispersed | — |
+| 3 | `GJ309-belt` | — | asteroid_belt | no | — | — | — | — | — | — | — | — | — | — | — |
+| 4 | `GJ309d` | — | planet | no | — | terrestrial | 0.58g | 720 | 27.8 | thin | cold_arid | — | — | — | — |
+| 5 | `GJ309e` | — | gas_giant | no | — | — | — | 2200 | 11.4 | gas_giant | — | — | — | — | — |
+| ↳ 5.1 | `GJ309e-m1` | — | moon | no | — | dwarf | 0.11g | 6 | 134.4 | none | frozen | — | — | — | — |
+| 6 | `GJ309f` | — | planet | no | — | terrestrial | 0.44g | 5400 | 34.6 | trace | frozen | ice | — | — | — |
+| 7 | `GJ309g` | — | planet | no | — | terrestrial | 0.34g | 12400 | 42.6 | trace | frozen | ice | — | — | — |
+| 8 | `GJ309h` | — | planet | no | — | terrestrial | 0.26g | 26000 | 50.4 | none | frozen | ice | — | — | — |
+| 9 | `GJ309i` | — | planet | no | — | dwarf | 0.12g | 54000 | 29.2 | none | frozen | ice | — | — | — |
+| 10 | `GJ309-oort` | — | oort_cloud | no | — | — | — | — | — | — | — | — | — | — | — |
+
+### Stations & Facilities
+
+| ID | Name | Type | Orbits | Population | Economy | Governance | Docking | Gate | Districts |
+|---|---|---|---|---|---|---|---|---|---|
+| `GJ309-oort-S1` | Vorposten Horizon | horizon | `GJ309-oort` | 140 | transit | — | major | yes | 1 |
+
 ## Topology
 <!-- READ-ONLY — regenerated from star-map.json edges -->
 - **Hop Distance from Gateway:** 8