diff --git a/docs/atlas/proposals/GJ142.json b/docs/atlas/proposals/GJ142.json
new file mode 100644
index 000000000..85f0e77d8
--- /dev/null
+++ b/docs/atlas/proposals/GJ142.json
@@ -0,0 +1,280 @@
+{
+  "system_id": "GJ 142",
+  "proper_name": "Leuchtturm",
+  "star_type": "G",
+  "spectral_class": "G5V",
+  "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": "GJ142b",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 1,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.5,
+      "orbital_period_days": 42.0,
+      "rotation_period_hours": 17.8,
+      "atmosphere": "none",
+      "biome_summary": "barren",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "inner rocky, hot, uninhabited"
+    },
+    {
+      "body_id": "GJ142c",
+      "proper_name": "Jena",
+      "body_type": "planet",
+      "orbit_index": 2,
+      "parent_body_id": null,
+      "inhabited": true,
+      "population": 3000,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.88,
+      "orbital_period_days": 350.0,
+      "rotation_period_hours": 26.2,
+      "atmosphere": "standard",
+      "biome_summary": "temperate",
+      "hydrosphere": "liquid_water",
+      "economic_role": "research",
+      "settlement_pattern": "urban_concentrated",
+      "industrial_corridor": null,
+      "notes": "primary inhabited world; wave_3 German heritage ('lighthouse'); 2-aperture spur_end; G5V warm yellow star (warmer than deep_frontier norm); limited arable zones, small research-sized population; three-century astronomical observation archive (deep frontier survey coordinates, spectroscopic data); Veil Institute informal relationship (collegial, professional networks, shared calibration standards); community council governance; Commission minimal presence (infrequent administrative visits); community exports data not crops"
+    },
+    {
+      "body_id": "GJ142d",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 3,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.68,
+      "orbital_period_days": 700.0,
+      "rotation_period_hours": 23.6,
+      "atmosphere": "thin",
+      "biome_summary": "cold_arid",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outer rocky, cold, uninhabited"
+    },
+    {
+      "body_id": "GJ142-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,
+      "biome_summary": null,
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "sparse asteroid belt"
+    },
+    {
+      "body_id": "GJ142e",
+      "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": 11.2,
+      "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": "GJ142e-m1",
+      "proper_name": null,
+      "body_type": "moon",
+      "orbit_index": 1,
+      "parent_body_id": "GJ142e",
+      "inhabited": false,
+      "population": null,
+      "mass_class": "dwarf",
+      "surface_gravity": 0.12,
+      "orbital_period_days": 6.4,
+      "rotation_period_hours": 153.6,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "icy moon, tidally locked"
+    },
+    {
+      "body_id": "GJ142f",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 6,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.46,
+      "orbital_period_days": 5600.0,
+      "rotation_period_hours": 34.4,
+      "atmosphere": "trace",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outer icy rocky, uninhabited"
+    },
+    {
+      "body_id": "GJ142g",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 7,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.36,
+      "orbital_period_days": 13000.0,
+      "rotation_period_hours": 43.2,
+      "atmosphere": "trace",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "distant icy rocky, uninhabited"
+    },
+    {
+      "body_id": "GJ142h",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 8,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "terrestrial",
+      "surface_gravity": 0.28,
+      "orbital_period_days": 28000.0,
+      "rotation_period_hours": 52.4,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "far outer icy rocky, uninhabited"
+    },
+    {
+      "body_id": "GJ142i",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 9,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "dwarf",
+      "surface_gravity": 0.13,
+      "orbital_period_days": 60000.0,
+      "rotation_period_hours": 30.6,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "outermost dwarf, near oort boundary"
+    },
+    {
+      "body_id": "GJ142j",
+      "proper_name": null,
+      "body_type": "planet",
+      "orbit_index": 10,
+      "parent_body_id": null,
+      "inhabited": false,
+      "population": null,
+      "mass_class": "dwarf",
+      "surface_gravity": 0.09,
+      "orbital_period_days": 120000.0,
+      "rotation_period_hours": 25.4,
+      "atmosphere": "none",
+      "biome_summary": "frozen",
+      "hydrosphere": "ice",
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "distant ice dwarf"
+    },
+    {
+      "body_id": "GJ142-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,
+      "biome_summary": null,
+      "hydrosphere": null,
+      "economic_role": null,
+      "settlement_pattern": null,
+      "industrial_corridor": null,
+      "notes": "oort cloud"
+    }
+  ],
+  "stations": [
+    {
+      "station_id": "GJ142-oort-S1",
+      "proper_name": "Leuchtturm Horizon",
+      "orbits_body_id": "GJ142-oort",
+      "station_type": "horizon",
+      "population": 180,
+      "economic_role": "transit",
+      "docking_class": "major",
+      "has_gate_infrastructure": true,
+      "notes": "horizon station — 2 apertures; spur_end; connects Knotenpunkt and GJ 425A; observatory supply staging; Commission administrative visits; relay array for inner-corridor data transmission"
+    },
+    {
+      "station_id": "GJ142c-S1",
+      "proper_name": "Sternwarte",
+      "orbits_body_id": "GJ142c",
+      "station_type": "research",
+      "population": 420,
+      "economic_role": "research",
+      "docking_class": "standard",
+      "has_gate_infrastructure": false,
+      "notes": "deep frontier observatory; precision optical instruments, cryogenic data storage; three-century spectroscopic archive; Veil Institute affiliated researchers; equipment reserve stockpile"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/wiki/star-systems/GJ-142/index.md b/wiki/star-systems/GJ-142/index.md
index 5d53010aa..6404af858 100644
--- a/wiki/star-systems/GJ-142/index.md
+++ b/wiki/star-systems/GJ-142/index.md
@@ -40,6 +40,31 @@ The designation is technically accurate — the readings have never been definit
 
 Leuchtturm's three-century astronomical archive contains a set of consistent anomalous readings that three generations of researchers have been unable to attribute to any known source, classified as "unresolved instrumental artifacts" and never submitted to the wider scientific community.
 
+## 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 | `GJ142b` | — | planet | no | — | terrestrial | 0.50g | 42 | 17.8 | none | barren | — | — | — | — |
+| 2 | `GJ142c` | Jena | planet | yes | 3K | terrestrial | 0.88g | 350 | 26.2 | standard | temperate | liquid_water | research | urban_concentrated | — |
+| 3 | `GJ142d` | — | planet | no | — | terrestrial | 0.68g | 700 | 23.6 | thin | cold_arid | — | — | — | — |
+| 4 | `GJ142-belt` | — | asteroid_belt | no | — | — | — | — | — | — | — | — | — | — | — |
+| 5 | `GJ142e` | — | gas_giant | no | — | — | — | 2200 | 11.2 | gas_giant | — | — | — | — | — |
+| ↳ 5.1 | `GJ142e-m1` | — | moon | no | — | dwarf | 0.12g | 6 | 153.6 | none | frozen | — | — | — | — |
+| 6 | `GJ142f` | — | planet | no | — | terrestrial | 0.46g | 5600 | 34.4 | trace | frozen | ice | — | — | — |
+| 7 | `GJ142g` | — | planet | no | — | terrestrial | 0.36g | 13000 | 43.2 | trace | frozen | ice | — | — | — |
+| 8 | `GJ142h` | — | planet | no | — | terrestrial | 0.28g | 28000 | 52.4 | none | frozen | ice | — | — | — |
+| 9 | `GJ142i` | — | planet | no | — | dwarf | 0.13g | 60000 | 30.6 | none | frozen | ice | — | — | — |
+| 10 | `GJ142j` | — | planet | no | — | dwarf | 0.09g | 120000 | 25.4 | none | frozen | ice | — | — | — |
+| 11 | `GJ142-oort` | — | oort_cloud | no | — | — | — | — | — | — | — | — | — | — | — |
+
+### Stations & Facilities
+
+| ID | Name | Type | Orbits | Population | Economy | Governance | Docking | Gate | Districts |
+|---|---|---|---|---|---|---|---|---|---|
+| `GJ142-oort-S1` | Leuchtturm Horizon | horizon | `GJ142-oort` | 180 | transit | — | major | yes | 1 |
+| `GJ142c-S1` | Sternwarte | research | `GJ142c` | 420 | research | — | standard | no | 1 |
+
 ## Topology
 <!-- READ-ONLY — regenerated from star-map.json edges -->
 - **Hop Distance from Gateway:** 8