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88 Constellations

Pegasus



Origin

Pegasus, often depicted as a winged horse flying across the night sky, has its origins in Greek mythology. In Greek legend, Pegasus was born from the blood of the Gorgon Medusa after the hero Perseus decapitated her. Pegasus was tamed and ridden by the hero Bellerophon, who used the majestic creature to slay the Chimera and accomplish other heroic feats. In honor of Pegasus's significance in Greek mythology, it was immortalized as a constellation, a collection of stars in the northern hemisphere, typically associated with the autumn night sky. Pegasus is known for its distinctive square-shaped asterism, which marks its body, and it remains a prominent and easily recognizable feature of the celestial tapestry.


Bright Stars

Markab (Alpha Pegasi): Markab is the brightest star in Pegasus. It is a giant star in the late stages of its evolution and has moved off the main sequence. Markab is located at a distance of approximately 140 light-years from Earth.

Scheat (Beta Pegasi): Scheat is the second-brightest in the constellation. Scheat is a red giant and is cooler and more luminous than the Sun. Scheat is located at a distance of approximately 196 light-years from Earth.

Algenib (Gamma Pegasi): Algenib is the third-brightest star in the constellation. Algenib is a hot, blue-white subgiant star, and is relatively close to Earth, at a distance of approximately 331 light-years.

Enif (Epsilon Pegasi): Enif serves as the ‘nose’ of the mythical winged horse Pegasus when seen in the night sky. Enif is a massive orange-red giant star and one of the largest known supergiants. It is approximately 670 light-years away from Earth.

Photo of the constellation Pegasus produced by NOIRLab in collaboration with Eckhard Slawik, a German astrophotographer. The annotations are from a standardized set of 88 western IAU constellations and stick figures from Sky & Telescope. Please find here a non-annotated version of the image.

Credit: E. Slawik/NOIRLab/NSF/AURA/M. Zamani

Latin name


English name

Pegasus

Pronunciation

pɛɡəsəPEG-uh-susss


Abbreviation

Peg

Notable Objects

The constellation Pegasus includes a number of notable objects incuding:

  • Messier 15: This globular cluster is a splendid target for small telescopes. It appears as a dense ball of stars and is one of the finest globular clusters in the northern hemisphere.
  • NGC 7331: Often referred to as the Deer Lick Galaxy, NGC 7331 is a spiral galaxy that resembles our own Milky Way. It is relatively bright and can be observed with a small telescope.
  • NGC 7479 (The Spirograph Nebula): This barred spiral galaxy is an intriguing target for small telescopes, especially for those interested in studying galaxy structures.
  • NGC 7814 (The Little Sombrero): Similar in appearance to the famous Sombrero Galaxy (M104), NGC 7814 is a spiral galaxy with a distinct edge-on view that can be observed with a small telescope.