Constellation Corona Australis (Southern Crown)

Corona Australis
Corona Australis: IAU Constellation Map [150]


Corona Australis is located south of the Teapot in Sagittarius and follows the curved tail of Scorpius. Although it does not contain any particularly bright stars, it still has a distinctive shape of half an ellipse and lies on the edge of the Milky Way ribbon. The constellation area is 128 square degrees and the center culminates around midnight on June 30th. [9, 15]

Stars with Proper Names [154]
α CrA Alfecca Meridiana
Data for constellation Corona Australis [150]
IAU NameCorona Australis
IAU GenitiveCoronae Australis
IAU Abbr.CrA
English NameSouthern Crown
Opposition30 June
Season (47° N)July … August
Right Ascension17h 58m 30s … 19h 19m 05s
Declination-45° 30' 59" … -36° 46' 43"
Area128 deg2
Neighbours (N↻)Sgr, Sco, Ara, Tel

Deep-Sky Object Descriptions


Constellation Corona Meridionalis
Constellation Corona Meridionalis: Illustration from «Uranometria» by Johann Bayer, copper engraving by Alexander Mair, 1603 [28]

Mythology and History

The southern counterpart to Corona Borealis, the Northern Crown, has been known since the time of the Greek astronomer Ptolemy in the second century AD. One interpretation shows it to be the crown of the centaur Sagittarius. [7]


  • [7] «Der grosse Kosmos-Himmelsführer» von Ian Ridpath und Wil Tirion; Kosmos Verlag; ISBN 3-440-05787-9
  • [9] «Drehbare Sternkarte SIRIUS» von H. Suter-Haug; Hallwag-Verlag, Bern
  • [15] «Hartung's Astronomical Objects for Southern Telescopes» by David Malin and David J. Frew; Melbourne University Press 1995; ISBN 0-522-84553-3
  • [28] «Uranometria omnium asterismorum continens schemata, nova methodo delineata aereis laminis expressa» Johann Bayer, Augsburg, 1603; DOI:10.3931/e-rara-309
  • [150] IAU: The Constellations, 11. Oktober 2020;
  • [154] Yale Bright Star Catalog, 15. Oktober 2020;