Triangulum

Also known as Tri, Trianguli

Triangulum is a small constellation in the northern sky. Its name is Latin for "triangle", derived from its three brightest stars, which form a long and narrow triangle. Known to the ancient Babylonians and Greeks, Triangulum was one of the 48 constellations listed by the 2nd century astronomer Ptolemy. The celestial cartographers Johann Bayer and John Flamsteed catalogued the constellation's stars, giving six of them Bayer designations.

AI overview

Triangulum is a small constellation in the northern sky named after the triangle shape formed by its three brightest stars, and it has been recognized since ancient times, appearing in Ptolemy's 2nd century catalog of 48 constellations. The constellation's stars were formally catalogued by later astronomers Johann Bayer and John Flamsteed, who assigned Greek letter designations to six of them.

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Key facts

Constellation.name: Triangulum
Constellation.abbreviation: Tri
Constellation.genitive: Trianguli
Constellation.pronounce: ,genitive
Constellation.symbolism: The Triangle
Constellation.RA: –
Constellation.dec: 25.60°–37.35°
Constellation.family: Perseus
Constellation.quadrant: NQ1
Constellation.areatotal: 132
Constellation.arearank: 78th
Constellation.numbermainstars: 3
Constellation.numberbfstars: 14
Constellation.numberbrightstars: 0
Constellation.numbernearbystars: 0
Constellation.brighteststarname: β Tri (Alaybasan)
Constellation.starmagnitude: 3.00
Constellation.neareststarname: GJ 3147

via Wikipedia infobox

Wikidata facts

Official name: Triangulum
Area: 132
Image: TriangulumCC.jpg

Show 3 more facts

Commons category: Triangulum (constellation)
Commons gallery: Triangulum
short name: Tri

Sources (5)

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Article

8 sections

Contents

History and mythology
Characteristics
Features
Stars
Deep-sky objects
See also
References
External links

The white stars Beta and Gamma Trianguli, of apparent magnitudes 3.00 and 4.00, respectively, form the base of the triangle and the yellow-white Alpha Trianguli, of magnitude 3.41, the apex. Iota Trianguli is a notable double star system, and there are three star systems with known planets located in Triangulum. The constellation contains several galaxies, the brightest and nearest of which is the Triangulum Galaxy or Messier 33—a member of the Local Group. The first quasar ever observed, 3C 48, also lies within the boundaries of Triangulum.