Alphecca

(redirected from Alphekka)

Alphecca

or

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.
Mentioned in ?
References in periodicals archive ?
In Corona Borealis is Gemma ([alpha]), also known as Alphekka, the brightest gem in this Northern Crown.
It lies within the striking semicircle of stars known as the Northern Crown, set most brightly with 2.2-magnitude Alphekka.
The cluster's core is situated less than 3[degrees] west-northwest of 2nd-magnitude Alpha (a) Coronae Borealis (Alphekka).