Triangulum
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Triangulum is a constellation in the northern sky. It is surrounded by Perseus, Andromeda, Pisces and Aries.
| Triangulum | |
|---|---|
| Latin name | Triangulum |
| Latin genitive | Trianguli |
| International abbreviation | Tri |
| Number of stars | 227 |
| Symbology | Triangle |
Remarkable objects
- α Trianguli, 3m.4, the arabic name Metallah means triangle
- β Trianguli, 3m.0, white giant
- γ Trianguli, 4m.0 spectral class A1
- M 33 or NGC 598 which is, besides M 33 and our own galaxy, the third largest galaxy of the Local Group
History and mythology
This constellation belongs to the classical ones of the ancient times. Due to the similarity with the letter Δ, the Greeks called it Deltoton. Aratos of Soli compared it in his Phainomena with the island of Sicily: "Near the Andromeda the island of Sicily is located, which looks like a triangle whose shortest side is graced by two near stars."