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|- style="vertical-align: top;" | Distance | 39,000 Ly XTE J1739-285 is a neutron star,〔(Low mass X-ray binary )〕 in the constellation Ophiuchus, situated approximately 39,000 light-years from Earth. It was first observed on 19 October 1999 by NASA's Rossi X-ray Timing Explorer satellite. It had previously been claimed that XTE J1739-285 was the fastest-spinning celestial body yet known, with a frequency of 1122 Hz (approximately 67,320 RPM).〔(Evidence of 1122 Hz X-Ray Burst Oscillations from the Neutron Star X-Ray Transient XTE J1739–285 )〕 However, a re-analysis of these data by other astronomers has been unable to reproduce this result.〔See footnote 1 of 〕 XTE J1739-285 has been proposed as a possible quark star, as well as 3C 58. ==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「XTE J1739-285」の詳細全文を読む スポンサード リンク
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