Corona Australis (Pronounciation:Core-ona Ore-stra-liss, Abbrev:CrA, Latin:Coronae Australis) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Corona Australis takes up 127.696 sq. degrees of the night sky which equates to 0.31% of the night sky. Corona Australis is the 80th largest in terms of size in the night sky.
The constellation name means The Southern Crown . The constellation is one of the original constellations that was devised by the Ancient Greco-Egyptian astronomer Ptolemy who lived between 90 A.D. and 168 A.D.
There are 6 stars that make up the main constellation. The hipparcos satellite scanned and detailed 485 stars. There are 28 stars that can be seen with the naked eye in the constellation on a very clear night sky.
Corona Australis is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Corona Australis is a southern hemispheric constellation which means it can't be seen easily or at all from the northern hemisphere.
There are no deep space objects that were identified by Charles Messier in this constellation. There are no non-Messier deep space objects in this constellation that are covered at present on this site.
The image at the top right of this page was generated using Night Vision, a free to use and download application by Brian Simspon.
You can't just go to one location and arrive at the constellation because the constellation is made up of stars at different locations and different distances. The nearest main star in the constellation is at a distance of 56.44 light years and the furthest main star is a distance of 557.54 light years. The average distance to the main stars is 290.46 light years.
The caveat of these stars are that they are catalogued on this site. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status.
The nearest star to Earth is HIP 89211 which is roughly about 42.74 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 166724 which is about 138.03 Light Years.
The furthest star that is located in the constellation is HIP 94864 and it is 108721.1 light years away from the Sun. The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.
The brightest star in Corona Australis is Alfecca Meridiana and is located about 84.87 light years from the Sun. The star has a apparent magnitude of 4.11 but an absolute magnitude of 1.19 when the star is viewed from a distance of 10 Parsecs or 32.6 Light Years. The star is recognised as being the brightest in the constellation as it has the Bayer status of Alpha.
The dimmest star that can be seen in Corona Australis with the naked eye is HD 179433. The dim star has an apparent magnitude of 5.91. The dimmest star that a person is able to see with their naked eye is 6.0 magnitude based on the table in the reference. Ref: University of Michigan.
It was created by Ptolemy to signify a crown. There are two crowns, one in the north Corona Borealis and this one in the south. The crown or wreath as it was also known as was associated with Centaurus or Sagittarius.
|Is a Zodiac Sign||No|
|Brightest Star||Alfecca Meridiana|
|Area||127.696 sq. deg.|
|Percentage of Night Sky||0.31%|
|Site Exoplanet Count||1|
|Meteor Shower Count||1|
|Nearest Star||HIP 89211|
|Nearest Star with Exoplanet(s)||HD 166724|
|Brightest Star||Alfecca Meridiana|
|Dimmest Star||HD 179433|
|Furthest Star||HIP 94864|
|Bright Star Count||28|
|Hipparcos Star Count||485|
|Main Star Count||6|
|Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Sagittarius|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
|NGC 6541||Open Star Cluster||-43 42 53.6||18 08 02m 36|
|NGC 6729||Reflection Nebula||-36 57 40||19 01 46m 4|
|NGC 6768||Spiral Galaxy||-40 12 33.26||19 16 32m 586|
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