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SDS 4 (Small Demonstration Satellite 4) was launched from Tanegashima on 17 May 2012 at 16:39 UT by an H-2A rocket. SDS 4, a Japanese cubesat, weighed 50 kg. It carries several technology demonstration experiments which will be used to verify new technologies for components and devices in space. One of the experiments includes an experiment to monitor AIS (Automatic Information System) messages transmitted from ships at sea. SDS 4 will operate from a 677-km Sun-Synchronous orbit.

Alternate Names

  • 38339
  • SDS-4

Facts in Brief

Launch Date: 2012-05-17
Launch Vehicle: H-2A
Launch Site: Tanegashima, Japan
Mass: 50 kg

Funding Agency

  • Japan Aerospace Exploration Agency (Japan)


  • Technology Applications

Additional Information

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

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