Triangulum Australe

For the northern constellation, see Triangulum.

Triangulum australe

Constellation
Triangulum australe List of stars in Triangulum australe
Abbreviation	TrA
Genitive	Trianguli Australis
Right ascension	16
Declination	-65
Area	110 sq. deg. (83rd)
Meteor showers	None
Bordering constellations	Norma Ara Circinus Apus
Visible at latitudes between +25° and −90°. Best visible at 21:00 (9 p.m.) during the month of July.

Triangulum Australe is a small southern constellation whose three brightest stars, of second and third magnitude, form an approximately equilateral triangle. This constellation was introduced by Johann Bayer in 1603.

Mythology

Since it was introduced in the 17th century, there is no earlier mythology associated with it.

Notable and named stars

BD	Names and other designations	Mag.	Ly away	Comments
α	Alpha Trianguli Australis, Atria	1.91	415	Atria derived from Alpha Trianguli Australis
β	Beta Trianguli Australis	2.83	40.1
γ	Gamma Trianguli Australis	2.87	183
δ	Delta Trianguli Australis	3.86	621
ε	Epsilon Trianguli Australis	4.11	216
ζ	Zeta Trianguli Australis	4.90	39.5
κ	Kappa Trianguli Australis	5.11	> 2000
ι	Iota Trianguli Australis	5.28	132	Gamma Doradus type variable star
θ	Theta Trianguli Australis	5.50	328
η	Eta Trianguli Australis	5.89	690

Source: The Bright Star Catalogue, 5th Revised Ed., The Hipparcos Catalogue, ESA SP-1200

External links

• The Deep Photographic Guide to the Constellations: Triangulum Australe