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Ryves Comet was discovered by P.M. Ryves, an English amateur astronomer, on August 14, 1931. His find was made using a small telescope in Zaragoza, Spain. It was observed from the Yerkes Observatory and the University of California Leuschner Observatory. ==Very near Sun== It appeared as a ball of hot gas traveling at one hundred miles per second from the Naval Observatory. The comet passed within 7,000,000 miles of the Sun on August 26. A wanderer in the solar system it is considered unlikely to return from outer space.〔''Ryves Comet Passes at 100 Miles a Second; Heads for Void, Probably Never to Return'', New York Times, August 28, 1931, pg. 13.〕 Ryves Comet was of ninth magnitude brightness by October 9, 1931 and was not observable with the naked eye. Astronomers at the Yerkes Observatory waited until just prior to dawn to observe and photograph it. The comet came into view just ahead of the Sun. Yerkes Observatory director, Edwin B. Frost, determined that Ryves Comet was two hours east of the Sun and seven degrees removed from it. In October it was one hundred times fainter than when it was first observed in August.〔''Elusive Ryves Comet Is Photographed'', New York Times, October 10, 2009, pg. 2.〕 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「Ryves Comet」の詳細全文を読む スポンサード リンク
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