Star lore
Pegasus
Direct answer
Pegasus is a large northern constellation representing a winged horse and recognized by the Great Square asterism.
Pegasus is the Winged Horse, an autumn constellation built around the Great Square.
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At a glance
- Found in
- Constellations & Star Lore
- Related
- Ophiuchus, Pavo, Perseus, Phoenix
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The story behind Pegasus
Pegasus was listed by Ptolemy; modern boundaries assign Alpheratz, one corner of the square, to Andromeda.
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Why Pegasus matters
The square provides a major orientation frame for finding Andromeda, Pisces, Aquarius, and the northern autumn sky.
How to read Pegasus
Identify Markab, Scheat, Algenib, and Alpheratz, then extend the horse's neck toward Enif.
Pegasus in practice: an example
Globular cluster M15 lies just beyond Enif and becomes a compact glow in binoculars.
Where readings of Pegasus go wrong
The Great Square is not contained entirely in Pegasus because Alpheratz officially belongs to Andromeda.
Sources and editorial method
Research references used for this entry include:
- International Astronomical Union: The Constellations - Official names, abbreviations, and boundaries for the 88 modern constellations.
- NASA Space Place: What Are Constellations? - NASA introduction to constellation regions, patterns, visibility, and seasonal sky changes.
- Source
- The Great Almanac Dictionary
- Category
- Constellations & Star Lore
- Last updated
- 2026-09-26
Open the autumn sky through the Great Square
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Common questions
What is Pegasus?
Pegasus is a large northern constellation representing a winged horse and recognized by the Great Square asterism.
What do people get wrong about Pegasus?
The Great Square is not contained entirely in Pegasus because Alpheratz officially belongs to Andromeda.
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