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T Coronae Borealis : ウィキペディア英語版
T Coronae Borealis


T Coronae Borealis (''T CrB''), informally nicknamed the ''Blaze Star'',〔(A Digital Spectral Classification Atlas, R. O. Gray ), 34. Unusual Stellar Spectra III: two emission-line stars〕 is a recurring nova in the constellation Corona Borealis. It normally has a magnitude of about 10, which is near the limit of typical binoculars. It has been seen to outburst twice, reaching magnitude 2.0 on May 12, 1866 and magnitude 3.0 on February 9, 1946. Though a more recent paper shows the 1866 outburst with a possible peak range of magnitude 2.5 ± 0.5. Even when at peak magnitude of 2.5, this recurrent nova is dimmer than about 120 stars in the night sky.〔(【引用サイトリンク】publisher=SIMBAD Astronomical Database )
==See also==

* John Birmingham (astronomer)

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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