Alpha Coronae Borealis | Article about Alpha Coronae Borealis by The Free Dictionary
Alphecca (redirected from Alpha Coronae Borealis)
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Alphekka (al-fek -ă) (Gemma; α CrB) A blue-white star that is the brightest one in the constellation Corona Borealis. It is an eclipsing binary (separation 42″, period 17.36 days). mv : 2.23; spectral type: A0 V (A), G5 V (B); distance: 22 pc.
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It's a semicircle of modestly dim stars set with one brighter gem: 2nd-magnitude Gemma, also known as Alphecca or Alpha Coronae Borealis
Alpha Coronae Borealis
at magnitude 2.2 stands out among four stars of 4th magnitude and others that form a striking arc.
It's a semicircle of modestly dim stars set with a brighter gem: 2nd-magnitude Gemma, also known as Alphecca or Alpha Coronae Borealis