Corona Borealis, the Northern Crown (CrB)
The Northern constellation of Corona Borealis, the Northern Crown, is best viewed in Summer during the month of July. It's brightest star is Gemma at magnitude 2.21. The boundary of the Corona Borealis constellation contains 6 stars that host known exoplanets.
- cuh-ROW-nuh bor-ee-AL-iss
- Northern Crown
- Coronae Borealis
- Constellation Family:
- Ursa Major
- Best viewing month*:
- Right Ascension (avg):
- 15h 53m
- Declination (avg):
- 32° 38'
- Brightest star:
- Gemma (2.21)
- Stars with planets:
- X-ray stars:
- 2 (binary) stars
- Messier catalog objects:
- Caldwell catalog objects:
Brightest Stars in Corona Borealis
The 10 brightest stars in the constellation Corona Borealis by magnitude.
- Spectral class
- Alpha Coronae Borealis (α CrB)
- Beta Coronae Borealis (β CrB)
- Gamma Coronae Borealis (γ CrB)
- Theta Coronae Borealis (θ CrB)
- Epsilon Coronae Borealis (ε CrB)
- Delta Coronae Borealis (δ CrB)
- Zeta Coronae Borealis (ζ CrB)
- Tau Coronae Borealis (τ CrB)
- Kappa Coronae Borealis (κ CrB)
- Xi Coronae Borealis (ξ CrB)
Double Stars in Corona Borealis
These are the brightest and easiest-to-find double, triple, and quadruple star systems in the constellation Corona Borealis . Also see all star clusters.
- Star system
- Zeta Corona Borealis
- 5.0, 5.9
- Sigma Corona Borealis
- 5.6, 6.5
* Constellation shown for northen hemisphere skies. For the southern hemisphere, constellations appear rotated 180 degrees (upside-down and left-right reversed) from what is shown. Remember that seasons are reversed too - summer in northern latitudes is winter in southern latitudes.
** Circumpolar constellations are visible year-round in the hemisphere listed (and not at all in the opposite hemisphere).