{
    "id": "TEST_MOON", "name": "Shale", "body_type": "moon",
    "planet_class": "barren", "body_scale": "dwarf", "seed": 11198,
    "star": {"type": "G", "luminosity_solar": 1.0, "color_temp_K": 5800},
    "orbit": {"distance_au": 1.0, "period_days": 28, "axial_tilt_deg": 1.5},
    "physical": {"gravity_g": 0.16, "oblateness": 0.001, "atmosphere": "none", "atmosphere_color": [0.5, 0.5, 0.5]},
    "terrain": {"land_fraction": 0.99, "polar_ice_lat": 0.98, "tectonics": "none", "max_elevation_km": 4.0},
    "environment": {"geothermal_flux": "low", "uv_index": "moderate", "substrate": "silicate", "chemosynthetic": false, "hydrosphere": "none"},
    "clouds": {"enabled": false},
    "render": {"globe_light_angle_deg": 125, "specular_ocean": false, "night_side_ambient": 0.005}
}