EventsOrbit change

SBIRS GEO-4 (USA 273) lowered its orbit

Name: SBIRS GEO-4 (USA 273) lowered its orbit
Start: 2026-09-15T10:13:55.285248Z
Location: Earth orbit

Perigee 35913 → 35789 km, apogee 35953 → 35951 km between element sets (epoch 2026-09-15 10:13 UTC).

15 Sept 2026 10:13 UTC · 11 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": -2.1,
  "d_perigee_km": -123.8
}

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