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Inmarsat 4-F3



Inmarsat 4-F3 is a geostationary communications satellite of the multinational Inmarsat consortium that was launched by a Proton-M rocket from Baikonur at 22:43 UT on 18 August 2008. The 5.96 tonne (with fuel) craft carries 200 spot-beams to relay messages from mobile phones based on land, sea, or air, after parking over 98° W longitude.

Alternate Names

  • 33278
  • Inmarsat4-F3

Facts in Brief

Launch Date: 2008-08-18
Launch Vehicle: Proton-M
Launch Site: Tyuratam (Baikonur Cosmodrome), Kazakhstan

Funding Agency

  • Inmarsat (International)


  • Communications

Additional Information

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

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