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Koronas-Foton ((ロシア語:Коронас-Фотон)), also known as CORONAS-Photon (Complex Orbital Observations Near-Earth of Activity of the Sun-Photon), was a Russian Solar research satellite. It is the third satellite in the Russian Coronas programme, and part of the international Living With a Star programme. It was launched on 30 January 2009, from Site 32/2 at the Plesetsk Cosmodrome, aboard the final flight of the Tsyklon-3 rocket. On 1 December 2009 all scientific instruments on the satellite were turned off due to the problems with power supply that were caused by a design flaw.〔 〕〔 〕 On 18 April 2010 the creators of the satellite announced it was lost "with a good deal of certainty".〔 (КОРОНАС-ФОТОН, по-видимому, умер ) (is apparently dead ) (in Russian). Official press release of the Laboratory of X-Ray Astronomy of the Sun of the Russian Academy of Sciences.〕〔 〕 ==Overview== The goal is to investigate the processes of free energy accumulation in the sun's atmosphere, accelerated particle phenomena and solar flares, and the correlation between solar activity and magnetic storms on Earth.〔(Russia makes first space launch of 2009 ) RIA Novosti 2009-01-30〕 Launch occurred successfully on 30 January 2009, and the first batch of science data was downloaded from the satellite on 19 February 2009.〔 The satellite operates in a 500 x 500 km x 82.5° polar low Earth orbit〔 and was expected to have an operational lifetime of three years. It developed power system problems during the first eclipse season, about six months after launch, and contact with the satellite was lost on 1 December 2009.〔http://www.sat-index.co.uk/failures/koronas.html〕 The satellite returned to life on December 29, after its solar panels received enough light to power its control systems,〔http://rt.com/Sci_Tech/2009-12-29/solar-observer-still-kicking.html〕 but attempts to revive the satellite failed, and the satellite is considered lost.〔〔(Koronas-Foton solar science satellite lost, source tells Russian news agency ), 18 January 2010〕 On 5 July 2009, Koronas-Foton's TESIS telescope registered the most powerful solar outburst of the year so far, lasting 11 minutes, from 06:07 to 06:18 GMT. Solar X-ray pick intensity reached С2.7 in a 5-level scale used to classify solar flares. The last equally powerful outburst occurred in 25 March 2008.〔 〕 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「Koronas-Foton」の詳細全文を読む スポンサード リンク
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