{
  "schema_version": 1,
  "name": "San Francisco Orbital Technosphere",
  "timestamp": "2026-08-13T15:36:00Z",
  "products": ["global", "observer"],
  "reference_point": {
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    "longitude_deg_east": -122.4194,
    "elevation_m": 16.0,
    "capture_method": "explicit profile value at make invocation"
  },
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    "central_right_ascension_hours": 12.0
  },
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    "gravity_model": "WGS72",
    "operation_mode": "AFSPC",
    "maximum_element_age_days": 7.0,
    "maximum_future_epoch_hours": 6.0
  },
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    "require_sunlit_for_optical_candidate": true,
    "maximum_solar_altitude_deg": -6.0
  },
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    "maximum_debris_per_group": 500,
    "maximum_labels": 40,
    "maximum_tracks_per_group": 1,
    "track_minutes_each_side": 45,
    "track_step_minutes": 3,
    "show_reference_lines": true
  },
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      "role": "active",
      "file": "celestrak-active.csv",
      "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv"
    },
    "groups": [
      {
        "id": "starlink",
        "role": "megaconstellation",
        "file": "celestrak-starlink.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=starlink&FORMAT=csv"
      },
      {
        "id": "oneweb",
        "role": "megaconstellation",
        "file": "celestrak-oneweb.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=oneweb&FORMAT=csv"
      },
      {
        "id": "kuiper",
        "role": "megaconstellation",
        "file": "celestrak-kuiper.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=kuiper&FORMAT=csv"
      },
      {
        "id": "qianfan",
        "role": "megaconstellation",
        "file": "celestrak-qianfan.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=qianfan&FORMAT=csv"
      },
      {
        "id": "hulianwang",
        "role": "megaconstellation",
        "file": "celestrak-hulianwang.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=hulianwang&FORMAT=csv"
      },
      {
        "id": "gnss",
        "role": "navigation",
        "file": "celestrak-gnss.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=gnss&FORMAT=csv"
      },
      {
        "id": "iridium-next",
        "role": "communications",
        "file": "celestrak-iridium-next.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=iridium-NEXT&FORMAT=csv"
      },
      {
        "id": "globalstar",
        "role": "communications",
        "file": "celestrak-globalstar.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=globalstar&FORMAT=csv"
      },
      {
        "id": "orbcomm",
        "role": "communications",
        "file": "celestrak-orbcomm.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=orbcomm&FORMAT=csv"
      },
      {
        "id": "resource",
        "role": "earth-observation",
        "file": "celestrak-resource.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=resource&FORMAT=csv"
      },
      {
        "id": "science",
        "role": "science",
        "file": "celestrak-science.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=science&FORMAT=csv"
      },
      {
        "id": "stations",
        "role": "human-presence",
        "file": "celestrak-stations.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=stations&FORMAT=csv"
      },
      {
        "id": "fengyun-1c-debris",
        "role": "debris",
        "file": "celestrak-fengyun-1c-debris.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=fengyun-1c-debris&FORMAT=csv"
      },
      {
        "id": "iridium-33-debris",
        "role": "debris",
        "file": "celestrak-iridium-33-debris.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=iridium-33-debris&FORMAT=csv"
      },
      {
        "id": "cosmos-2251-debris",
        "role": "debris",
        "file": "celestrak-cosmos-2251-debris.csv",
        "source_url": "https://celestrak.org/NORAD/elements/gp.php?GROUP=cosmos-2251-debris&FORMAT=csv"
      }
    ],
    "nasa_ssc_reference": {
      "file": "nasa-ssc-reference.json",
      "query_url": "https://sscweb.gsfc.nasa.gov/WS/sscr/2/locations/iss,aqua,landsat9,goes19/20260813T153000Z,20260813T154000Z/geo,geij2000/",
      "source_url": "https://sscweb.gsfc.nasa.gov/WebServices/REST/"
    }
  },
  "snapshot": {
    "collection_started_at": "2026-08-13T15:35:35Z",
    "collection_completed_at": "2026-08-13T15:36:31Z",
    "checksum_file": "SHA256SUMS"
  }
}