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Blaze Star

recurring nova in the constellation Corona Borealis

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About Blaze Star

T Coronae Borealis is a binary star and a recurrent nova about 3,000 light-years away in the constellation Corona Borealis. Its apparent magnitude varies between 2.0 in outburst and 10.8 in quiescence, representing about a 3300-fold change in brightness. T Coronae Borealis is its variable-star designation and the name most frequently used in the astronomical literature, but it also has the official proper name Blaze Star. The system was first observed in outburst in 1866 by John Birmingham, but had been observed earlier in quiescence as an unremarkable 10th magnitude star. It may have been observed in 1217 and in 1787 as well. Its February 1946 flare-up was discovered independently by three observers: the Soviet amateur astronomer A. S. Kamenchuk, the 15-year-old schoolboy Michael Woodman from Wales, and the British variable star observer N. F. H. Knight. This led to the guess that the star flares every 80 years with the next nova outburst then predicted to occur before 2027. T Coronae Borealis enters solar conjunction in late November and becomes hidden by the Sun's glare for a few months.

Facts from Wikidata (CC0). Image by PopePompus via Wikimedia Commons (CC BY-SA 4.0).

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