Pegasus

Peg · genitive Pegasi · northern sky

The Pegasus figure as the IAU defines it, drawn looking south with east to the left — the orientation you see standing outside.

At a glance

Catalogued stars
182
Visible to the eye
182 stars
Brightest star
Enif (2.38)
Best seen
August
Declination span
+6.2° to +33.2°
Nearest star
24Iot Peg · 38.2 ly

Visible from everywhere north of about 57°S.

When and where to look for Pegasus

Pegasus crosses the meridian — its highest point in the sky — at local midnight around August, which makes the months from July to September the easiest time to find it in the evening. It spans declinations +6.2° to +33.2°, so visible from everywhere north of about 57°S.

The quickest way to find it is to open the live AR sky map and point your phone at the sky — if Pegasus is above your horizon right now, its figure is drawn in the position it genuinely occupies above you.

Brightest stars in Pegasus

StarMagTypeDistance
Enif8Eps Peg2.38K2Ibvar689.5 ly
Scheat53Bet Peg2.44M2II-IIIvar196 ly
Markab54Alp Peg2.49B9.5III133.3 ly
Algenib88Gam Peg2.83B2IV391.5 ly
Matar44Eta Peg2.93G2II-III..214.3 ly
Homam42Zet Peg3.41B8.5V204.4 ly

Magnitude runs backwards: lower numbers are brighter, and anything below about 6.5 is beyond the naked eye under a dark sky.

What Pegasus is made of

The catalogue lists 182 stars within Pegasus, of which 182 are magnitude 6.5 or brighter — the limit of what an unaided eye picks up under a genuinely dark sky. The rest need binoculars or a telescope.

Spectral make-up

B22
A32
F26
G28
K48
M25

Spectral class is a temperature ordering, running from O at around 30,000 K down to M below 3,500 K. A constellation is a direction, not a group, so this is simply what happens to lie along that line of sight.

The closest catalogued star in this direction is 24Iot Peg at 38.2 light years. The most distant is HD 209288 at roughly 1,953 light years — stars that appear side by side here are nothing of the sort.

Nearby constellations