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// communications · 1990

Skynet 4A

Decommissioned British military communications satellite. Skynet 4A was launched on January 1, 1990 aboard a Commercial Titan 3 from Cape Canaveral & Kennedy. Latest status in GCAT: renamed (Oct 24, 2003).

COSPAR 1990-001ANORAD 20401United Kingdom

Identity

Name in GCAT
Skynet 4A
International designator
1990-001A
NORAD catalog number
20401
GCAT identifier
S20401
UN registration
ST/SG/SER.E/219

Mission

Mission type
Communications
Use
Defense
Program
Skynet
Owner
UK MoD
Country
United Kingdom
Builder
British Aerospace
Platform (bus)
ECS

Launch

Date
January 1, 1990 · 00:07 UTC
Launch record
1990-001Success
Spaceport
Cape Canaveral & Kennedy · pad LC40

Orbit and fate

Orbit class (GCAT)
GEO/ID
Perigee
35,449 km
Apogee
35,787 km
Inclination
3.37°
Status
Renamed
Status date
October 24, 2003
Last known active
Jun 29, 2005
End of operations
Jun 29, 2005

Size

Mass
763 kg
Dry mass
615 kg
Total mass with attached objects
1,430 kg
Length
2.1 m
Diameter
1.90 m
Span
16.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q16943248 (CC0).