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AMOS 6 is a 5-ton Earth communications satellite,〔(IAI to launch new 5-ton Amos satellite ), spacedaily.com, 6 July 2012, accessed 11 July 2012〕 one of the Spacecom AMOS series, to be built by Israel Aerospace Industries (IAI), a defence and aerospace company, with payload components from various sub-contractors including Canada's MacDonald, Dettwiler and Associates that is building the communications payload, and Thales Alenia Space ETCA for the electric propulsion. The satellite "will incorporate new technologies that represent a significant leap forward in the capabilities of IAI and the state of Israel in space," according to IAI's president and chief executive, Joseph Weiss.〔 Amos-6 is said to be costing US$200m of which $105.4 million will be covered by loans from the Export-Import Bank of the United States, and is scheduled for launch in mid of 2016 with a contracted orbital service life of 15 years.〔〔 In January 2013, Spacecom announced that they had signed a contract with SpaceX for the 2015 launch of the Amos-6 satellite on a Falcon 9 launch vehicle.〔 Amos-6 is intended to replace the Amos-2 satellite, planned to be retired in 2016.〔 〕 During 2015 Spacecom announced the launch date has slipped to the first quarter of 2016 before postponing the launch to mid-2016.〔 Amos stands for Affordable Modular Optimized Satellite,〔 and is also an allusion to the Jewish prophet Amos. Under the deal with Spacecom, state-owned IAI, flagship of Israel's defence industry, will build Amos-6 and its ground control systems, as well as provide operating services.〔 Spacecom has estimated that the cost of launching, insuring and one year's operation of Amos 6 will be $85 million.〔(Spacecom to build $200m Amos 6 satellite ), Aviv Levy, globes.co.il, 24 June 2012, accessed 9 July 2012〕 In October 2015 social media platform Facebook and satellite fleet operator Eutelsat agreed to pay $95 million over about five years to lease the Ka-band spot-beam broadband capacity — 36 regional spotbeams with a throughput of about 18 Gbps — on Amos-6 to provide service for Facebook’s Internet.org and a new Eutelsat subsidiary focusing on African businesses.〔 Costs will be divided in approximately equal shares between Eutelsat and Facebook The parties have agreed to the right to terminate the contract if Amos-6 and the ground gateways in France, Italy and Israel are not ready for service by January 1st, 2017. The lease extends to September 2021, with an option for a two-year extension at a reduced rate.〔〔 After a technical analysis including an assessment of customer power requirements Facebook and Eutelsat have concluded that only 18 out of the 36 Ka-band spot beams can be used simultaneously without sacrificing user experience.〔 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Amos-6」の詳細全文を読む スポンサード リンク
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