The brightest star in Corona Borealis is the white main-sequence star Alphecca. Alphecca is an eclipsing binary star system, having an apparent magnitude of 2. Currently, around 5 stars in Corona Borealis have been discovered to host planets. Alphecca, designated as Alpha Coronae Borealis, is the brightest star in its constellation.
It is the 67 th brightest star in the night sky, and it is composed out of two main-sequence stars, located at around 75 light-years away from us. The primary star, Alphecca A, is a white main-sequence star, while B, is a yellowish main-sequence star. The apparent magnitude of this system is 2. The primary star, Alphecca A, is enveloped by a circumstellar disk of gas and dust, similar to the one enveloping the star Vega.
Alphecca bore many names, such as Alphecca Gemma, Gnosia, and Asteroth. Alphecca is one of the 15 Behenian Fixed Stars. These stars were considered in medieval times to have magical attributes and were associated with stars and other objects. Alphecca was associated with Venus and Mercury , it conveyed honor, dignity, and both poetical and artistic ability.
This contributes to its circumstellar disk of gas and dust that extends up to 60 AU from the star. Nusakan, designated as Beta Coronae Borealis, is the second-brightest star in Corona Borealis, and it is also a binary star system having an apparent magnitude that varies from 3. Nusakan is located at around light-years away from us. The secondary star, Beta Coronae Borealis B, is a main-sequence star.
Gamma Coronae Borealis is a binary star system located at around light-years away from Earth. It has an apparent magnitude of 3. Its surface temperature is 7, K, hotter than our Sun, and it is overall 59 times brighter than our Sun.
Theta Coronae Borealis is a binary star located at around light-years away from us, having a combined apparent magnitude of 4. The two components are designated as Theta Coronae Borealis A, a blue-white star of magnitude 4. It is also times brighter than our Sun. Delta Coronae Borealis is a variable star located at around light-years away from us. Its apparent magnitude varies regularly between magnitude 4. Epsilon Coronae Borealis is a multiple star system located at around light-years away from us.
It has a combined apparent magnitude of 4. It also has an exoplanet around 6. Iota Coronae Borealis is a binary star located at around light-years away from us. It has an apparent magnitude of 4. The two components of this system are a chemically peculiar mercury-manganese star and an A-type Star.
It is located at around It is 1. It is also older than our Sun — around R Coronae Borealis is a yellow supergiant star that is located at around 1, parsecs and has an apparent magnitude that varies from 5.
It is the prototype of the R Cor Bor class of variable stars, which fade by several magnitudes at irregular intervals. The remainder is mostly carbon. It is also around 10, times brighter than our Sun. It is situated around It is cooler than our Sun, with a temperature of around 4, K, but it is It is the first first subgiant discovered to host a disk of dust around it. The disk extends to around AU.
As well as the notable stars mentioned above, the Corona Borealis constellation also hosts some deep sky objects. There are no Messier objects in Corona Borealis and no meteor showers are associated with this constellation.
NGC is a member of the Abell galaxy cluster. It is a spiral galaxy that is located at around million light years away from us. It has an apparent magnitude of NGC is a the brightest galaxy in the Abell galaxy cluster.
With a magnitude of Abell is a huge x-ray luminous galaxy cluster. It is luminous because of a still ongoing merge between two galaxy clusters. It stretches for around six million light years and contains hundreds of galaxies and enough galaxies to make thousands more.
Abell is another galaxy cluster, however it is highly concentrated and contains over galaxies. It is located at around one billion light years away from our Solar System. The Corona Borealis Supercluster is, as its name suggests, a supercluster. This galaxy contains the galaxy clusters Abell , , , , , and It is the most prominent of its kind in the northern celestial hemisphere.
It is around million light years wide and million light years deep. This supercluster is located around million light years away from Earth!
Location Of The Corona Borealis Constellation As mentioned above, Corona Borealis is the 73rd largest constellation in the sky and is considered to be fairly small. Around 5 stars in Corona Borealis constellation have been discovered to host planets. Alphecca Alphecca, also known as Alpha Coronae Borealis, is the brightest star in Corona Borealis and the 67th brightest star in the night sky.
Nusakan Nusakan, also known as Beta Coronae Borealis, is the second brightest star in Coronae Borealis and is located around light years away from us. T Coronae Borealis T Coronae Borealis is also known as the Blaze star and it is an unusual type of star known as a recurrent nova. R Coronae Borealis R Coronae Borealis is a yellow supergiant star that is located at around 1, parsecs and has an apparent magnitude that varies from 5.
Deep Sky Objects As well as the notable stars mentioned above, the Corona Borealis constellation also hosts some deep sky objects.
Abell Abell is a huge x-ray luminous galaxy cluster. Abell Abell is another galaxy cluster, however it is highly concentrated and contains over galaxies. The Skidi people of Native Americans saw the stars of Corona Borealis as representing a council of stars whose chief was Polaris.
Polynesian peoples often recognized Corona Borealis. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. The two stars orbit each other every 93 years and are about as far apart as our Sun and the planet Neptune. Corona Borealis contains no Messier objects but does contain a few notable deep-sky objects that can only be seen in large telescopes.
The Corona Borealis Galaxy Cluster is a dense cluster of about galaxies that spans an area of about one degree of the sky.
It is a recurring nova that normally has a visual magnitude of about During its outbursts, it can brighten to a magnitude of as high as 2. To search this site, type your search word s in the box below and click the search button:. All rights reserved. Content from this Website may not be used in any form without written permission from the site owner. Sea and Sky receives commissions for purchases made through links on this site. Visit Us on Facebook.
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