EventsOrbit change

SBIRS GEO-4 (USA 273) lowered its orbit

Name: SBIRS GEO-4 (USA 273) lowered its orbit
Start: 2026-09-14T10:17:16.038240Z
Location: Earth orbit

Perigee 35945 → 35913 km, apogee 35964 → 35953 km between element sets (epoch 2026-09-14 10:17 UTC).

14 Sept 2026 10:17 UTC · 22 h ago · detected 3 h ago

Entities

1 linked entity

Type	Entity	Relationship	NORAD
satellite	SBIRS GEO-4 (USA 273)	subject	41937

Metadata

{
  "norad_id": 41937,
  "d_apogee_km": -11.2,
  "d_perigee_km": -32.4
}

Metadata is stored exactly as produced by the connector that detected the event; keys vary by event type.