Constellation Corona Australis (Southern Crown)

Corona Australis
Corona Australis: IAU Constellation Map [150]

Properties

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:

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

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]

Catalogs

Yale Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) [154]
HR B F RA [hms] Dec [dms] vMag spType dMag Sep ["]
6951θ18 33 30.2-42 18 454.64 G8III
6952κ118 33 23.3-38 43 136.32 A0III 0.721.4
6953κ218 33 23.1-38 43 345.65 B9V 0.721.4
7021λ18 43 46.9-38 19 255.13 A2Vn 4.529.2
7050μ18 47 44.6-40 24 225.24 G5-6III
7062η118 48 50.5-43 40 485.49 A3V
7068η218 49 35.0-43 26 025.61 B9IV
7152ε18 58 43.4-37 06 274.87 F2V
7188ζ19 03 06.9-42 05 434.75 B9.5V
7226γ19 06 25.1-37 03 484.93 F8V 0.11.6
7227γ19 06 25.1-37 03 484.99 F8V 0.11.6
7242δ19 08 20.9-40 29 484.59 K1III
7254α19 09 28.3-37 54 164.11 A2V
7259β19 10 01.7-39 20 274.11 K0II

Revised+Historic NGC/IC, Version 22/9, © Dr. Wolfgang Steinicke [277]
Planetary Nebulae
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
IC 129719 17 23.4-39 36 45PN10.610.70.4Stellar (gaseous spectrum)PK 358-21.1, ESO 337-PN20, CS=12.9
Galactic Nebulae
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 672619 01 39.2-36 53 29RN9 × 7* 6·7 in F, pL, nebESO 396-N13, pair with N 6727
NGC 672719 01 42.2-36 52 35RN80* 8 in F, pL nebESO 396-N14, pair with N 6726
NGC 672919 01 55.3-36 57 28EN+RN25 × 20Var * (11…) with neb!!ESO 396-N*15
IC 481219 01 03.5-37 03 37RN+*10 × 7* 7 inv in eL nebESO 396-*N12, CED 165A
Globular Clusters
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 654118 08 02.2-43 42 40III6.315globular, B, R, eC, gbM, rrr, st 15…16GCL 86, ESO 280-SC4
Galaxies
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 6768 119 16 32.7-40 12 31E413.212.21.2 × 1.1vF, S, R, pslbMESO 337-18, MCG -7-39-10
NGC 6768 219 16 29.7-40 13 22S013.912.90.6 × 0.4vF, S, R, pslbMESO 337-17, MCG -7-39-9
IC 480819 01 07.5-45 18 51Sc12.912.32 × 0.8vF, cL, cE 45°, lbM, suspESO 282-3, IRAS 18574-4523

References

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
150IAU: The Constellations, 11. Oktober 2020; iau.org/public/themes/constellations
154Yale Bright Star Catalog, 15. Oktober 2020; tdc-www.harvard.edu/catalogs/bsc5.html
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)