Star lore
Great Square of Pegasus
Direct answer
Great Square of Pegasus: The Great Square of Pegasus is an autumn asterism formed by Markab, Scheat, Algenib, and Alpheratz, with the last star officially in Andromeda.
The Great Square is a broad four-star frame shared visually by Pegasus and Andromeda.
$0 today, then $12/month after 7 days. Cancel anytime.
At a glance
- Found in
- Constellations & Star Lore
- Related
- Winter Triangle, Winter Hexagon, Teapot Asterism, Northern Cross
What does your own chart say about you?
Choose love, work or purpose. Your reading is written from your chart. Your reading uses your own birth details.
Walk through Alex’s whole example first
The Road of AgesSee the turning points of your whole life, from your birth date
See your road's shape
Prefer to explore first?
The Road of AgesThe turning points of your whole life, from your own chart
Walk my road
Free, by email
Your daily Almanac letter
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
The story behind Great Square of Pegasus
The square grew from the traditional Pegasus figure, while modern boundaries reassigned Alpheratz solely to Andromeda.
A one-minute story
The Road of the Sun
Where the twelve signs came from, and why they carry the names they do.
Why Great Square of Pegasus matters
Great Square of Pegasus’s uncluttered interior and strong corners make it a primary guide to the northern autumn constellations.
How to read Great Square of Pegasus
Identify the large tilted square, then leave from Alpheratz toward Andromeda or from Markab toward Pegasus's neck.
Great Square of Pegasus in practice: an example
Counting stars visible inside the square can provide an informal comparison of sky darkness from one site to another.
Where readings of Great Square of Pegasus go wrong
The star-count test varies with eyesight, transparency, altitude, and exact boundary choice; it is not a calibrated meter.
Sources and editorial method
Research references used for this entry include:
- NASA Science: What Are Asterisms? - NASA explanation of familiar star patterns that are not official constellation regions.
- NASA Science: Skywatching FAQ - NASA guidance on naked-eye sky orientation, seasonal visibility, stars, and constellations.
- International Astronomical Union: The Constellations - Official names, abbreviations, and boundaries for the 88 modern constellations.
- Source
- The Great Almanac Dictionary
- Category
- Constellations & Star Lore
- Last updated
- 2026-09-26
Step through the four corners of autumn
A definition tells you what it is; your own birth chart tells you what it means for you. The Oracle casts your real chart and answers for your love, your work, and your year ahead, in conversation. It opens with the 7-day Seeker trial.
Speak with the OracleRelated terms
More in Constellations & Star Lore
From the reference page to your own chart
Every word here
is in your own chart.
- A personal reading about love, work or purpose, written from your chart
- A practical next step to consider
- It opens with 7 days free, with the AI Oracle and daily guidance
$0 today, then $12/month after 7 days. Cancel anytime.
Common questions
What is the Great Square of Pegasus?
The Great Square of Pegasus is an autumn asterism formed by Markab, Scheat, Algenib, and Alpheratz, with the last star officially in Andromeda.
What do people get wrong about the Great Square of Pegasus?
The star-count test varies with eyesight, transparency, altitude, and exact boundary choice; it is not a calibrated meter.
Free, by email
The Almanac, in your inbox at 7
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
