diff --git a/docs/atlas/proposals/GJ434.json b/docs/atlas/proposals/GJ434.json
new file mode 100644
index 000000000..224ba7b75
--- /dev/null
+++ b/docs/atlas/proposals/GJ434.json
@@ -0,0 +1,189 @@
+{
+  "system_id": "GJ 434",
+  "proper_name": null,
+  "star_type": "M",
+  "spectral_class": "M1Vvar",
+  "wiki_data": {
+    "habitable_count": 0,
+    "inhabited_count": 0,
+    "has_gas_giant": false,
+    "has_asteroid_belt": true,
+    "has_horizon_station": true,
+    "raw_bodies_line": null
+  },
+  "bodies": [
+    {
+      "body_id": "GJ434b",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 1,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.38,
+      "orbital_period_days": 10.0,
+      "rotation_period_hours": 240.0,
+      "atmosphere": "none",
+      "biome_summary": "barren",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "inner scorched rocky, tidally locked; flare exposure"
+    },
+    {
+      "body_id": "GJ434c",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 2,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.68,
+      "orbital_period_days": 56.0,
+      "rotation_period_hours": 24.8,
+      "atmosphere": "thin",
+      "biome_summary": "cold_arid",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "nominal HZ candidate; M1Vvar flare activity complicates settlement — shielding costs raise investment threshold"
+    },
+    {
+      "body_id": "GJ434-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": "GJ434d",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 4,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.44,
+      "orbital_period_days": 180.0,
+      "rotation_period_hours": 26.2,
+      "atmosphere": "trace",
+      "biome_summary": "frozen",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outer rocky, frozen, uninhabited"
+    },
+    {
+      "body_id": "GJ434e",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 5,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.34,
+      "orbital_period_days": 540.0,
+      "rotation_period_hours": 30.4,
+      "atmosphere": "trace",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outer icy rocky, uninhabited"
+    },
+    {
+      "body_id": "GJ434f",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 6,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "dwarf",
+      "surface_gravity": 0.11,
+      "orbital_period_days": 1600.0,
+      "rotation_period_hours": 21.4,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outermost ice dwarf"
+    },
+    {
+      "body_id": "GJ434g",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 7,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "dwarf",
+      "surface_gravity": 0.07,
+      "orbital_period_days": 4200.0,
+      "rotation_period_hours": 17.2,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "distant ice dwarf"
+    },
+    {
+      "body_id": "GJ434-oort",
+      "proper_name": null,
+      "body_type": "oort_cloud",
+      "orbit_index": 8,
+      "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": "GJ434-oort-S1",
+      "proper_name": "GJ 434 Horizon",
+      "orbits_body_id": "GJ434-oort",
+      "station_type": "horizon",
+      "population": 0,
+      "economic_role": "transit",
+      "docking_class": "major",
+      "has_gate_infrastructure": true,
+      "notes": "horizon station — 2 apertures; spur_end; connects Taishan and GJ 117; Commission-registered navigation beacons maintained via Taishan transit authority; occasional transit traffic; research vessel parked in high orbit (extended unauthorized stay, three years)"
+    }
+  ]
+}
diff --git a/wiki/star-systems/GJ-434/index.md b/wiki/star-systems/GJ-434/index.md
index 90b3cd2b2..51987d646 100644
--- a/wiki/star-systems/GJ-434/index.md
+++ b/wiki/star-systems/GJ-434/index.md
@@ -40,6 +40,26 @@ A research vessel undertaking stellar activity studies has been parked in a high
 
 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.
 
+## 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 | `GJ434b` | — | planet | no | — | terrestrial | 0.38g | 10 | 240.0 | none | barren | — | — | — | — |
+| 2 | `GJ434c` | — | 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
 <!-- READ-ONLY — regenerated from star-map.json edges -->
 - **Hop Distance from Gateway:** 6