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Skynet 4D

retired

CommunicationsGEOCOSPAR 1998-002ALaunched 1/10/1998

Mission & Launch

Launch Mission: Skynet 4D Mission
Launch Vehicle: Delta 7925-9.5
Launch Date: 1/10/1998
Last Contact: 1/24/2008

Orbit & Mass

Orbit Class: GEO
Altitude: 35,742.5 km
Inclination: 4.15 deg
Dry Mass: 720 kg
Total Mass: 1,490 kg

Payload Classification

Mission Type: Communications
Payload Category: COM
Payload Class: D

Organizations

Operator: U.K. Ministry of Defence
Manufacturer: Lockheed Martin

Constellation

Name: Skynet military communications
Active Satellites: 6

Registry

COSPAR ID: 1998-002A
UN Registration: ST/SG/SER.E/378