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Corona Borealis
Corona Borealis
List of stars in Corona Borealis
Abbreviation CrB
Genitive Coronae Borealis
Pronunciation /kɵˈroʊnə bɒriˈælɨs/, genitive /kɵˈroʊniː/
Symbolism The Northern Crown
Right ascension 16 h
Declination +30°
Family Ursa Major
Quadrant NQ3
Area 179 sq. deg. (73rd)
Main stars 6
Bayer/Flamsteed
stars
24
Stars with
known planets
3
Stars brighter than 3m 1
Stars within 10 pc (32.6 ly) 0
Brightest star α CrB (Alphecca or Gemma) (2.21m)
Nearest star HD 144579
(46.86 ly, 14.37 pc)
Messier objects 0
Meteor showers None
Bordering
constellations
Hercules
Boötes
Serpens Caput
Visible at latitudes between +90° and −50°.
Best visible at 21:00 (9 p.m.) during the month of July.

Corona Borealis is a small constellation in the northern sky. Its name is Latin for "northern crown", a name inspired by its shape; its main stars form a semicircular arc. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy and remains one of the 88 modern constellations.

Contents

Notable features

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Stars

Corona Borealis has no first magnitude stars. Its brightest star, α CrB (Alphecca, also known as Gemma) is of magnitude 2.2 (slightly variable) and is considered a member of the diffuse Ursa Major Moving Group. The constellation contains several interesting variable stars: two of the best known are R Coronae Borealis and T Coronae Borealis.

Named Stars

Bayer Name Origin Meaning
α Alphecca/Alpheta Arabic "The broken" ring of stars
β Nusakan Arabic The two series
T Blaze Star English The star that blazes now and then

Deep sky objects

Corona Borealis contains no bright deep sky objects. Abell 2065 is a highly concentrated galaxy cluster containing over 400 members, the brightest of which are of 16th magnitude.

Mythology

Corona Borealis was sometimes considered to represent a crown that was given by Dionysus to Ariadne, the daughter of Minos of Crete. At other points it was considered to belong, in a sense, to Boötes, the herdsman. The Cheyenne nation of Native Americans called it the "Camp Circle" as they arranged their camps in a semicircle. In Welsh mythology, the Northern Crown was called Caer Arianrhod, ‘the Castle of the Silver Circle,’ and was the heavenly abode of the Lady Arianrhod (Squire, 2000:154-155).

See also

References

  • Ian Ridpath and Wil Tirion (2007). Stars and Planets Guide, Collins, London. ISBN 978-0007251209. Princeton University Press, Princeton. ISBN 978-0691135564.
  • Squire, C. (2000). The mythology of the British Islands: an introduction to Celtic myth, legend, poetry and romance. London & Ware: UCL & Wordsworth Editions Ltd.

External links

Coordinates: Sky map 16h 00m 00s, +30° 00′ 00″


Wiktionary

Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

Contents

English

Map of Corona Borealis

Etymology

From Latin corona borealis (northern crown)

Proper noun

Singular
Corona Borealis

Plural
-

Corona Borealis

  1. (astronomy) A small constellation said to resemble a crown.

Derived terms

  • Coronae Borealis

Translations

External links

See also


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