Illustrated Guide to Astronomical Wonders

47Triangulum, The Triangle

NAME: Triangulum (try-ANG-you-lum)

SEASON: Autumn

CULMINATION: midnight, 23 October

ABBREVIATION: Tri

GENITIVE: Trianguli (try-ANG-you-lee)

NEIGHBORS: And, Ari, Per, Psc

BINOCULAR OBJECTS: NGC 0598 (M 33)

URBAN OBJECTS: none

Triangulum is a small, faint mid-northerly constellation that ranks 78th in size among the 88 constellations. Triangulum covers only 132 square degrees of the celestial sphere, or about 0.3%. Triangulum is devoid of bright stars. It has only two third-magnitude stars, one of the fourth magnitude, and seven of the fifth magnitude. Despite its lack of bright stars, however, Triangulum is reasonably prominent because its triangular shape lies far from any bright stars. Triangulum is easy to find, ...