Segi Tiga Selatan

Triangulum Australe
Triangulum Australe
Buruj
Nama Latin	Triangulum Australe
Singkatan	TrA
Genitif	Trianguli Australis
Sebutan	/triangulum australe, ; genitif /trianguli australis/
Simbolisme	Segi Tiga Selatan
Pencerapan
	(Epok J2000)
Jarak hamal	14j 56.4m hingga 17j 13.5m
Keserongan	−60.26° hingga −70.51°
Sukuan	SQ3
Keluarga	Herkules
Keluasan	110 darjah persegi (ke-83)
Bintang
Bintang utama	3
Bintang Bayer/Flamsteed	10
Bintang dengan planet	1
Bintang terang (lebih daripada 3.00m)	3
Bintang dalam 10.00 pc; (32.62 ly)	0
Bintang paling terang	α TrA (Atria) (1.91m)
Bintang terhampir	ζ TrA; (39.48 tc, 12.11 pc)
Objek
Objek Messier	Tiada
Pancuran meteor	Tiada
Buruj bersempadan	Norma (Sesiku) ; Ara (Mazbah) ; Circinus (Kompas) ; Apus (Cenderawasih)
Catatan
	Boleh dilihat pada garis lintang antara +25° dan −90°.; Penglihatan terbaik pada jam 21:00 (9:00 malam) ketika bulan Julai.
	sunting Lihat pendokumenan templat ini

Segi Tiga Selatan atau Triangulum Australe ialah sebuah buruj kecil di hemisfera samawi jauh selatan. Namanya dalam bahasa Latin bermaksud "segi tiga selatan", yang membezakannya daripada Triangulum (Segi Tiga) di langit utara dan diturunkan daripada corak hampir sama daripada ketiga-tiga bintang tercerahnya. Buruj ini pertama kali digambarkan pada sebuah glob samawi sebagai Triangulus Antarcticus atau Segi Tiga Antartik oleh Petrus Plancius pada 1589, dan kemudian dengan lebih ketepatan dan nama sekarangnya oleh Johann Bayer dalam karyanya Uranometria pada 1603. Penjelah dan ahli astronomi Perancis Nicolas Louis de Lacaille mencartakan dan memberi bintang-bintang lebih cerahnya designasi Bayer masing-masing pada 1756.

Alpha Trianguli Australis, dikenali sebagai Atria, ialah sebuah gergasi jingga bermagnitud kedua dan bintang tercerah dalam buruj ini, serta bintang keempat puluh dua tercerah di langit malam. Yang melengkapkan segi tiga ialah dua buah bintang jujukan utama putih Beta dan Gamma Trianguli Australis. Sungguhpun buruj ini terletak dalam Bimasakti dan mengandungi banyak bintang, objek-objek langit lepas adalah tidak prominen. Ciri-ciri ketara termasuklah gugusan terbuka NGC 6025 dan nebula planet NGC 5979.

Rujukan

Kutipan

^ ^a ^b IAU Constellation Boundary.

Sumber

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Sumber lain

Office of Public Outreach (24 April 2008), "Cosmic Collisions Galore!", HubbleSite, Baltimore, Maryland, Amerika Syarikat: Institut Sains Teleskop Angkasa (STScI), dicapai pada 17 Oktober 2012
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"Delta Trianguli Australis", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 7 Jun 2012
"CPD-63 3854B", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
"Epsilon Trianguli Australis", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 7 Jun 2012
"HD 138510", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 7 Jun 2012
"HD 150550 – Pulsating variable Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
"HR 6172 – Be Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
"Kappa Trianguli Australis", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
"LTT 6522 – High proper-motion Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 8 September 2012
"R Trianguli Australis – Classical Cepheid (delta Cep type)", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 2 September 2012
"S Trianguli Australis – Classical Cepheid (delta Cep type)", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 2 September 2012
"U Trianguli Australis – Cepheid variable Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 2 September 2012
"X Trianguli Australis – Carbon Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 9 September 2012