Tri - Triangulum the Triangle

Legend for constellation star maps, IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg), cc-by

Intro and Visual description

Five stars appear in a triangle.

Represented Sicily to the Romans, and a three-stringed shalish (musical instrument) to the Hebrews.


Origin and History

Triangulum is included in the ancient star catalogs of Eudoxos of Knidos, Aratos of Soli, and Ptolemy.
The Oklahoma copy of Bayer (1661) has plate W showing Triangulum bound out of order as plate UU.



M33, Pinwheel Galaxy (Spiral galaxy), mag. 5.8.



Constellation Info

Abbr: Tri

Genitive: Trianguli

Size: 78 of 88

RA: 2 hours

Evening culmination (9 pm): December

Midnight Culmination: October

Decl: 30 degrees

Entirely visible from: S of 33° latitude

Partially visible from: between 33° and 45° latitude

Not visible at all from: N of 45° latitude


Bordering constellations:

Constellation - Names

Arabic: المثلث

Chinese: 三角座

English: Triangle

French: Triangle

German: Dreieck

Greek: Τρίγωνον

Hebrew: משולש

Italian: Triangolo

Latin: Triangulum

Russian: Треугольник

Spanish: Triángulo

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