Corona Australis

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Corona australis
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Abbreviation	CrA
Genitive	Coronae Australis / Coronae Austrinae
Symbology	The Southern Crown
Right ascension	19 h
Declination	−40°
Area	List of constellations by area>Ranked 80th
Number of stars (magnitude < 3)	0
Brightest star	α CrA (Apparent magnitude>App. magnitude 4.1)
Meteor showers	Beta Corona Austrinids
Bordering constellations	Sagittarius Scorpius Ara Telescopium
Visible at latitudes between +40° and −90° Best visible at 21:00 (9 p.m.) during the month of August
Corona Australis or Corona Austrina (Latin for Southern Crown) was one of Ptolemy's 48 constellations, and also counts among the 88 modern constellations. The name contrasts with Corona Borealis. Contents 1 History 2 Naming mixup 3 Stars 4 References 5 External links History The constellation was sometimes considered to be the crown of Sagittarius, which had fallen on the ground for some reason. Naming mixup In 1932 the International Astronomical Union officially changed the name of this constellation to "Corona Austrina" (with genitive "Coronae Austrinae"). This may have been due to an inadvertent naming mixup which has never been corrected [link], but in any case the official IAU website continues to list "Corona Austrina" as the official name [link]. In practice, the original name "Corona Australis" continues to be more widely used. Stars Stars with proper names: * (α CrA) 4.11 Alphekka Meridiana [Alfecca Meridiana] *: < فكّة al-fakkah The broken (ring of stars) Stars with Bayer designations: : β CrA 4.10; γ CrA – double 4.23, 4.99; δ CrA 4.57; ε CrA 4.83; ζ CrA 4.74; η1 CrA 5.46; η2 CrA 5.60; θ CrA 4.63; κ1 CrA 6.31; κ2 CrA 5.67; λ CrA 5.11; μ CrA 5.20 Other notable stars: * R CrA 11.50 – variable References The Cambridge Guide to the Constellations, Michael E. Bakich, Cambridge University Press, 1995, pg. 85 Constellations changed by Johann Bayer in the 1603 text Uranometria Centaurus | split into | Centaurus | Crux Leo | split into | Leo | Coma Berenices Piscis Austrinus | split into | Piscis Austrinus | Grus Sagittarius | split into | Sagittarius | Corona Australis Constellations changed by Lacaille in 1763 Argo Navis split into Carina | Puppis | Vela Eridanus split into Eridanus | Fornax Sagittarius | Corona Australis altered to create Telescopium Centaurus | Lupus altered to create Circinus External links Corona Australis photo - [link] Wikimedia Commons has media related to: [Special]   From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating. All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details. Search Titles 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ? E-mail this article to: Personal Message: