{
  "schemaVersion": "1.0.0",
  "name": "SateliteAPI.com demonstration fixtures",
  "demonstrationOnly": true,
  "description": "Synthetic local examples for exploring orbit records, imagery metadata and GeoJSON. No live satellite data, commercial endpoint, raster imagery, authentication or network request is involved.",
  "orbits": [
    {
      "id": "demo-circular-leo",
      "name": "Low orbit example · 550 km",
      "demonstrationOnly": true,
      "recordType": "synthetic_circular_orbit",
      "model": "idealized two-body circular orbit",
      "altitudeKm": 550,
      "inclinationDeg": 53,
      "eccentricity": 0,
      "ascendingNodeDeg": 0,
      "initialArgumentOfLatitudeDeg": 0,
      "elapsedSeconds": 0,
      "referenceEpoch": "arbitrary simulation epoch; not a timestamp",
      "earthModel": "sphere, radius 6378.137 km; uniform rotation",
      "periodMinutes": 95.64988,
      "speedKmPerSecond": 7.585089,
      "initialPositionKm": {
        "frame": "simulation inertial axes",
        "x": 6928.137,
        "y": 0,
        "z": 0
      },
      "notes": "This record does not identify a real spacecraft and is not operational ephemeris."
    },
    {
      "id": "demo-circular-meo",
      "name": "Medium orbit example · 20,200 km",
      "demonstrationOnly": true,
      "recordType": "synthetic_circular_orbit",
      "model": "idealized two-body circular orbit",
      "altitudeKm": 20200,
      "inclinationDeg": 55,
      "eccentricity": 0,
      "ascendingNodeDeg": 0,
      "initialArgumentOfLatitudeDeg": 0,
      "elapsedSeconds": 0,
      "referenceEpoch": "arbitrary simulation epoch; not a timestamp",
      "earthModel": "sphere, radius 6378.137 km; uniform rotation",
      "periodMinutes": 718.698161,
      "speedKmPerSecond": 3.872635,
      "initialPositionKm": {
        "frame": "simulation inertial axes",
        "x": 26578.137,
        "y": 0,
        "z": 0
      },
      "notes": "This record does not identify a real spacecraft and is not operational ephemeris."
    },
    {
      "id": "demo-circular-high",
      "name": "High orbit example · 35,786 km",
      "demonstrationOnly": true,
      "recordType": "synthetic_circular_orbit",
      "model": "idealized two-body circular orbit",
      "altitudeKm": 35786,
      "inclinationDeg": 0,
      "eccentricity": 0,
      "ascendingNodeDeg": 0,
      "initialArgumentOfLatitudeDeg": 0,
      "elapsedSeconds": 0,
      "referenceEpoch": "arbitrary simulation epoch; not a timestamp",
      "earthModel": "sphere, radius 6378.137 km; uniform rotation",
      "periodMinutes": 1436.066508,
      "speedKmPerSecond": 3.074661,
      "initialPositionKm": {
        "frame": "simulation inertial axes",
        "x": 42164.137,
        "y": 0,
        "z": 0
      },
      "notes": "This record does not identify a real spacecraft and is not operational ephemeris."
    }
  ],
  "imagery": [
    {
      "id": "demo-coastal-imagery",
      "name": "Coastal tile metadata",
      "demonstrationOnly": true,
      "recordType": "synthetic_imagery_metadata",
      "coordinateReference": "longitude / latitude in WGS84",
      "boundingBox": [
        -123,
        37,
        -122,
        38
      ],
      "boundingBoxOrder": [
        "west",
        "south",
        "east",
        "north"
      ],
      "nominalAcquisitionTime": "2000-01-01T12:00:00Z",
      "nominalPixelSizeMetres": 10,
      "bands": [
        "red",
        "green",
        "blue",
        "near_infrared"
      ],
      "syntheticCloudCoverPercent": 18,
      "rasterAssetIncluded": false,
      "notes": "All values are invented to illustrate a metadata contract. This is not a STAC Item or a provider response."
    },
    {
      "id": "demo-urban-imagery",
      "name": "Urban tile metadata",
      "demonstrationOnly": true,
      "recordType": "synthetic_imagery_metadata",
      "coordinateReference": "longitude / latitude in WGS84",
      "boundingBox": [
        -1,
        51,
        0,
        52
      ],
      "boundingBoxOrder": [
        "west",
        "south",
        "east",
        "north"
      ],
      "nominalAcquisitionTime": "2000-01-01T12:00:00Z",
      "nominalPixelSizeMetres": 20,
      "bands": [
        "red",
        "green",
        "blue",
        "shortwave_infrared"
      ],
      "syntheticCloudCoverPercent": 7,
      "rasterAssetIncluded": false,
      "notes": "All values are invented to illustrate a metadata contract. This is not a STAC Item or a provider response."
    },
    {
      "id": "demo-agricultural-imagery",
      "name": "Agricultural tile metadata",
      "demonstrationOnly": true,
      "recordType": "synthetic_imagery_metadata",
      "coordinateReference": "longitude / latitude in WGS84",
      "boundingBox": [
        10,
        48,
        11,
        49
      ],
      "boundingBoxOrder": [
        "west",
        "south",
        "east",
        "north"
      ],
      "nominalAcquisitionTime": "2000-01-01T12:00:00Z",
      "nominalPixelSizeMetres": 30,
      "bands": [
        "red",
        "near_infrared",
        "shortwave_infrared"
      ],
      "syntheticCloudCoverPercent": 32,
      "rasterAssetIncluded": false,
      "notes": "All values are invented to illustrate a metadata contract. This is not a STAC Item or a provider response."
    }
  ],
  "coordinate": [
    {
      "id": "demo-coordinate-origin",
      "name": "Equator / prime meridian sample",
      "demonstrationOnly": true,
      "recordType": "coordinate_conversion_fixture",
      "input": {
        "latitudeDeg": 0,
        "longitudeDeg": 0,
        "ellipsoidalHeightMetres": 0
      },
      "ecefMetres": {
        "x": 6378137,
        "y": 0,
        "z": 0
      },
      "geojson": {
        "type": "Feature",
        "properties": {
          "label": "Synthetic coordinate example",
          "demonstrationOnly": true,
          "heightReference": "WGS84 ellipsoidal"
        },
        "geometry": {
          "type": "Point",
          "coordinates": [
            0,
            0,
            0
          ]
        }
      },
      "notes": "A mathematical example only; it does not represent an observed satellite or device."
    }
  ]
}