Pegasus (The Winged Horse)

The Great Square anchors autumn skies — and 51 Pegasi hosted the first exoplanet found around a Sun-like star.

Core Principles & Analysis

• 51 Pegasi b, announced in 1995, opened the exoplanet era and earned the 2019 Nobel Prize.
• The Great Square’s fourth corner star, Alpheratz, officially belongs to neighboring Andromeda.
• Despite the square’s fame, the constellation’s brightest star is Enif, the horse’s muzzle.

Specifications & Metrics

• BRIGHTEST STAR: Enif (ε Peg)
• HEMISPHERE: Northern
• BEST VIEWED: October