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SES 2, a communications satellite, was launched on 21 September 2011 from Kourou at 21:38 UT by an Ariane 5 rocket. The satellite weighed 3.2 tonnes and will join four other Orbital-built spacecraft in the SES fleet to provide service for North America. It carries 24 active C-band and 24 Ku-band transponders of 36 MHz capacity. Six of the channels in each band can be cross-strapped to the opposite band, enabling new service capability. The SES 2 satellite will generate approximately 5.0 kW of payload power and will have two 2.3 m deployable reflectors. It will be stationed at 87-degrees West longitude.

It also carries the Commercially Hosted InfraRed Payload (CHIRP) for the U.S. Air Force. CHIRP will demonstrate infrared detection technologies from geosynchronous orbit for missile warning applications.

Alternate Names

  • 37809
  • SES2

Facts in Brief

Launch Date: 2011-09-21
Launch Vehicle: Ariane 5
Launch Site: Kourou, French Guiana
Mass: 3200 kg
Nominal Power: 5000 W

Funding Agency

  • SES (International)


  • Communications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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