EventsOrbit change

SBIRS GEO-4 (USA 273) lowered its orbit

Name: SBIRS GEO-4 (USA 273) lowered its orbit
Start: 2026-09-16T05:02:49.314336Z
Location: Earth orbit

Perigee 35789 → 35778 km, apogee 35951 → 35795 km between element sets (epoch 2026-09-16 05:02 UTC).

16 Sept 2026 05:02 UTC · 9 h ago · detected 2 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": -156,
  "d_perigee_km": -10.8
}

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