NOSS-4 3

American signals intelligence satellite. NOSS-4 3 was launched on December 9, 2025 aboard a Falcon 9 from Cape Canaveral & Kennedy. Latest status in GCAT: in orbit.

COSPAR 2025-291ANORAD 66992United States

Identity

Name in GCAT: USA 570
Common name: NOSS-4 3
Payload designation: [INTRUDER 19]
International designator: 2025-291A
NORAD catalog number: 66992
GCAT identifier: S66992

Mission

Mission type: Signals intelligence
Use: Defense
Program: NOSS3
Owner: NRO
Country: United States
Builder: Lockheed Martin Space Systems (Denver), Astronautics Operations
Platform (bus): NOSS-3

Launch

Date: December 9, 2025 · 19:16 UTC
Launch record: 2025-291Success
Rocket: Falcon 9
Spaceport: Cape Canaveral & Kennedy · pad LC40

Orbit and fate

Orbit class (GCAT): LEO/I
Perigee: 1,008 km
Apogee: 1,207 km
Inclination: 63.44°
Status: In orbit
Last known active: Mar 24, 2025

Size

Mass: 1,000 kg
Dry mass: 1,000 kg
Length: 2.0 m
Diameter: 2.00 m
Span: 2.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q140795562 (CC0).