Corona Australis

Corona Australis

Constellation
List of stars in Corona Australis
Abbreviation	CrA
Genitive	Coronae Australis / Coronae Austrinae
Pronunciation	/kɵˈroʊnə ɒˈstreɪlɨs/ or /kɵˈroʊnə ɒˈstraɪnə/, genitive /kɵˈroʊniː/
Symbolism	The Southern Crown
Right ascension	19 h
Declination	−40°
Quadrant	SQ3
Area	128 sq. deg. (80th)
Main stars	6
Bayer/Flamsteed stars	14
Stars with planets	0
Stars brighter than 3.00m	0
Stars within 10.00 pc (32.62 ly)	0
Brightest star	α CrA (4.10m)
Nearest star	HD 166348 (42.26 ly, 12.96 pc)
Messier objects	0
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 is a constellation. Its name means "southern crown", and it contrasts with Corona Borealis, the northern crown. Corona Australis was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.

Stars

The R Coronae Australis region imaged with the Wide Field Imager at ESO's La Silla Observatory

The only star in the constellation to have received a name is Alfecca Meridiana, or Alpha CrA. The name combines the Arabic name of the constellation with the Latin for 'middle'.

CrA also harbours RX J1856.5-3754, an isolated neutron star that is one of the closest to the earth at approximately 200 light years and suspected to be a strange star.

Equivalents

In Chinese astronomy, the stars of Corona Australis are located within the Black Tortoise of the North (北方玄武, Běi Fāng Xuán Wǔ)^[1]

See also

• Corona Borealis
• Corona Australis (Chinese astronomy)

References

• The Cambridge Guide to the Constellations, Michael E. Bakich, Cambridge University Press, 1995, pg. 85
• Ian Ridpath and Wil Tirion (2007). Stars and Planets Guide, Collins, London. ISBN 978-0007251209. Princeton University Press, Princeton. ISBN 978-0691135564.

1. ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 2 日

External links

• The Deep Photographic Guide to the Constellations: Corona Australis
• Corona Australis photo - [1]
• Star Tales – Corona Australis

Coordinates: 19^h 00^m 00^s, −40° 00′ 00″