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// missile early warning · 2023

USA 346

Satellite. USA 346 was launched on September 10, 2023 aboard a Atlas V 551 from Cape Canaveral & Kennedy. Latest status in GCAT: in orbit.

COSPAR 2023-140ANORAD 57836United States

Identity

Name in GCAT
USA 346
Payload designation
SILENT BARKER 1
Other names
:U
International designator
2023-140A
NORAD catalog number
57836
GCAT identifier
S57836
UN registration
ST/SG/SER.E/1162

Mission

Mission type
Missile early warning
Use
Defense
Program
SILENT BARKER
Owner
NRO
Country
United States
Builder
Unknown US manufacturer (classified satellite)
Platform (bus)
SILENTBARKER

Launch

Date
September 10, 2023 · 12:47 UTC
Launch record
2023-140Success
Spaceport
Cape Canaveral & Kennedy · pad SLC41

Orbit and fate

Orbit class (GCAT)
GEO/I
Perigee
35,784 km
Apogee
35,789 km
Inclination
12.31°
Status
In orbit
Last known active
2025

Size

Mass
1,200 kg
Dry mass
1,000 kg
Length
3.0 m
Diameter
1.50 m
Span
10.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q123765098 (CC0).