Has the Blaze Star erupted?
Not yet.
Last reported at magnitude 10.0 6 hours ago, one of 11 observations in the past day. When it erupts it should reach about magnitude 2, as bright as the North Star.
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The last 60 days
Each dot is one night's median brightness reported to the AAVSO. Higher on the chart is brighter. Quiet, T CrB sits near magnitude 10, far below what your eye can see.
Where to look
Find Arcturus, the bright orange star off the curve of the Big Dipper's handle. A little to its east is Corona Borealis, a small, tight arc of stars like a tiara. T CrB will appear just below the arc's eastern end, about as bright as the arc's own brightest star, Alphecca. The chart at the top of this page shows the spot.