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Yamal-402
Yamal-402 is a Russian geostationary communications satellite. It was launched on 8 December 2012, 13:13:43 UTC from Site 200/39 at the Baikonur Cosmodrome in Kazakhstan.〔(【引用サイトリンク】title=December 2012 Launch Calendar )〕 It was built by Thales Alenia Space, and is based on the Spacebus 4000C3 satellite bus. It is equipped with 46 J band (IEEE Ku band) transponders.〔(【引用サイトリンク】title=Yamal-402 at SatBeams )〕 It has a design life of 15 years, but reducing to 11 years expected after launch partial failure.〔(【引用サイトリンク】title=Yamal-402 at Gunter's Space Page )〕
==Launch problem==
On 8 December 2012, Khrunichev Center and International Launch Services reported an anomaly during the launch of the Yamal-402. Briz-M stage failure 4 minutes before scheduled shut down on its fourth burn.〔(【引用サイトリンク】title=ILS Declares Proton Launch Anomaly )〕〔(【引用サイトリンク】title=ILS Proton-M launches with Yamal-402 satellite )〕
On 10 December 2012, specialists from Thales Alenia Space carried out maneuvers to bring the satellite into its designated orbit after a premature separation from Briz-M, the upper stage of a Proton-M carrier rocket.〔(【引用サイトリンク】title=Thales Makes Second Attempt to Adjust Yamal Orbit )〕
On 15 December 2012, Yamal-402 was taken to its planned geostationary orbit at the altitude of 36,000 km following a series of four adjustment operations.〔(【引用サイトリンク】title=Troubled Russian Satellite Reaches Designated Orbit )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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