Corona Borealis

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Abbreviation:  CrB
English Name:  The Northern Crown
Genitive: Alphecca
Hemisphere:  Northern Hemisphere
Location: Between the constellations of Hercules and Bootes.
Visible between latitudes:  
+90 and -50 degrees
Best season: Summer
Seen in three seasons: Spring, Summer, and Autumn
Best seen in:  July
Seen between: March and September
Right Ascension (RA):  16 hour
Declination (DEC):  +30 degrees
Area (square degrees):  179 (73rd)

Corona Borealis (The Northern Crown)

  • Small constellation in the northern sky; the curve, known as “The Northern Crown” has inspired by its shape as a crown with seven stars make it easy to find.
  • Those stars make up the constellation’s figure are all stars – magnitude +4.0, except for the constellation’s brightest star, Alpha Coronae Borealis, but the curve of seven stars makes the constellation easy to find.

Messier Objects

  • No Messier objects in Corona Borealis.

Features of Interest

  • Corona Borealis contains no bright Deep Sky Objects (DSO).
  • In the “Bowl” of the Northern Crown is a famous variable star; R Coronae Borealis is a yellow supergaint star – itself normally shines at around magnitude +6.0 to about visible to the naked-eye, but at the length-time of several months to many years fades down to as faint as magnitude +14.0! (See the Data of R Coronae Borealis.) (R Coronae Borealis; location in the Star Atlas.)

Named Stars

  • Alphekka (Alpha CrB)
  • Nusakan (Beta CrB)



Back to The 88 Constellations Lists  page.

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