Official name SKYNET 5D
Alternative name Skynet 5D
Cospar ID 2012-075A
Norad ID 39034
Launch date 2012-12-19
Launch site FRGUI
Launch vehicle Ariane-5ECA
Country/Organization UK
Type application Military communication
Operator Paradigm Secure Communications for MoD
RCS size LARGE
Decay date ON ORBIT
Period (min) 1436.09
Inclination (deg) 0.07
Perigee (km) 35772
Apogee (km) 35802
Eccentricity 0.000419146617486797
Mean motion (revs. per day) 1.00272267058471
Semi-Major axis (km) 42165.135
Raan (deg) 349.3414
Arg of perigee (deg) 54.8953
Shape Box + 2 Pan
Mass (kg) 4844
Height (m) 4.5
Width (m) 2.9
Depth (m) 2.9
Span (m^2) 34
Lifetime 15 years
Contractors Astrium, Paradigm Secure Communications
Equipment ?
Propulsion ?
Configuration Eurostar-3000S
Power 2 deployable solar arrays, batteries

Skynet 5 is the programme to update the UK's military satellite communications capability for the British Ministry of Defence. The Skynet 5 system will provide the next generation of secure global military satellite communications system, initially through the transfer of ownership, operation and enhancement of the existing Skynet 4 infrastructure and then by incorporating new Skynet 5 satellites and associated ground segment from the middle of this decade. The programme will be delivered in the form of a service provision contract.

Under contract to Paradigm Secure Communications, selected in February 2002 as preferred bidder for the Skynet 5 secure global military satellite communications programme, Astrium is responsible for the replacement of the existing Skynet 4 ground and space assets (for which the company is prime contractor) by a new, integrated Skynet 5 system. Astrium has supported the Skynet 5 programme from its outset, including various concept studies carried out over the past five years. The contract for two satellites was awarded in October 2003. In December 2005 Paradigm decided not to insure the first two satellites, but to procure a third one as a spare, as well as a option to a fourth satellite.

Satellite COSPAR Date LS Launch Vehicle Remarks
SKYNET 5A 2007-007B 2007-03-11 FRGUI Ariane-5ECA with Insat 4B
SKYNET 5B 2007-056B 2007-11-14 FRGUI Ariane-5ECA with Star One C1
SKYNET 5C 2008-030A 2008-06-12 FRGUI Ariane-5ECA with Türksat 3A
SKYNET 5D 2012-075A 2012-12-19 FRGUI Ariane-5ECA with MEXSAT 3