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HMAC-SHA-256 · 2026-05-03T12:42:26+00:00

NORAD 39084 · LANDSAT 8

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Event

NORAD ID39084
ObjectLANDSAT 8
Alert at (UTC)2026-05-03T12:42:26+00:00
Kindthrust_event_detected
Fused score 0.7035 threshold 0.40

Contributing modalities

ModalityContribution
catalog0.0173
manoeuvre0.4000

Notes

(none)

Verify this dossier

Every dossier is signed at issue time so any later edit invalidates it. The detector outputs, model versions, cryptographic hash, and signature are all bundled in the signed JSON package — download it to share with auditors, insurers, or regulators.

Technical detail (detectors, model versions, signature)

Detector outputs (raw)

catalog

{
  "d2_chi2": 3.782111506641614,
  "score_normalized": 0.021649313739526062,
  "is_anomalous": false,
  "threshold_chi2": 80.0,
  "orbit_class": "LEO",
  "global_d2": 3.782111506641614,
  "class_d2": 3.641190854818602,
  "feature_dim": 21,
  "context": {
    "norad_id": "39084",
    "OBJECT_NAME": "LANDSAT 8",
    "EPOCH": "2026-05-03T06:03:23.558400"
  }
}

manoeuvre

{
  "n_events": 12,
  "last_z": 6.607901644475326,
  "last_delta_mm": 3.949999999974807e-06,
  "last_epoch": "2026-05-02T03:41:16.395072+00:00",
  "kind": "orbit_lower",
  "score_normalized": 1.0
}

Inputs summary

{
  "object_id": "39084",
  "has_gp_record": true,
  "has_optical": false,
  "has_audio": false,
  "orbit_class": "LEO"
}

Model versions on file

DetectorSnapshot version
catalog-anomalyv20260503T101945Z
rf-carrierv20260503T101945Z
vit-anomalyv20260503T101945Z
yolo-opticalv20260503T101945Z

Cryptographic provenance

Body SHA-256: 71c0797be8259a7f78455fb74f14c1f6467db2c05c53df82704ea13aac9dd4d2
HMAC-SHA-256: e1cfa0ff5a2bfe130307796a38e033621f99f407e2d57f590a19d9a23dbbd407

Schema: debrisguard.forensic_dossier.v1. The hash above is computed over the signed JSON package; the HMAC is produced with a DebrisGuard-controlled key. Independent verification is available on request — contact hello@deepfieldlabs.dev for the verification toolkit.