Triangulum: The Triangle


Triangulum, The Triangle

Triangulum as depicted by Johann Bayer in his Uranometria (1624). Source image provided by — Barry Lawrence Ruderman Antique Maps Inc.

Triangulum Constellation Profile
Abbreviation: Tri Genitive: Trianguli Origin: Ancient
Location: Northern Hemisphere Size/Area: 132 sq. deg. Size Rank: 78
On Meridian: 9pm December 5th Best View (North): Autumn Best View (South):
Bordering Constellations: Andromeda, Pisces, Aries, Perseus


TheMyth Behind the Constellation Triangulum

Triangulum, “The Triangle” is said to have represented several different things to the ancient Greeks.  One is the Greek capital letter delta.  Another is the delta of the Nile river.  It was also said to represent the triangular-shaped island of Sicily.

Triangulum Constellation Points of Interest

Interesting Objects in the Constellation Triangulum
Name Messier NGC Type Visibility
Triangulum Galaxy M33 NGC 598 Spiral Galaxy Binoculars


Bright Stars in Triangulum

These are the stars in Triangulum with a minimum magnitude of 3.0.

Name Bayer Name Magnitude Color Luminosity Distance
Deltotum Beta Trianguli 3.00  White suns 124 ly