Alpha Pegasi is the third brightest star in the constellation Pegasus (despite its "alpha" designation). One of the four stars in the asterism known as the Great Square of Pegasus (Alpheratz, Scheat, Markab, Algenib). (The SW corner star.
[6280] alpha Pegasi, the third brightest star in the constellation, is a large main sequence star lying approximately 140 light-years from Earth. It is also known as Markab or Marchab, which is Arabic for "the saddle of the horse." ...
Markab = Alpha Pegasi
Scheat = Beta Pegasi
Algenib = Gamma Pegasi
alpheratz = Gamma Pegasi = Alpha Andromedae
Enif = Epsilon Pegasi
Homam = Zeta Pegasi
Matar = Eta Pegasi
Sadalbari = Lambda Pegasi
Sadalbari = Mu Pegasi
Xi Peg = Xi Pegasi ...
It lies near the center (22:57:28+20:46:7.8, ICRS 2000.0) of Constellation Pegasus, the Winged Horse -- northwest of Markab (Alpha Pegasi) and southwest of Scheat (Beta Pegasi).
NGC 7479 is a barred spiral galaxy about three degrees due south of alpha Pegasi.
Stephan's Quintet is a noted cluster of galaxies half a degree SSW of NGC 7331. See how many of the five you can spot (three is average, four is good).
The remaining three stars of the Square are Alpha Pegasi, also known as Markab from the Arabic for ‘shoulder'; Beta Pegasi, called Scheat from the Arabic meaning ‘the shin'; and Gamma Pegasi, or Algenib, meaning ‘ ...
Variable star beta Peg (period: ~35 days)
Double stars xi Peg, epsilon Peg, kappa Peg, 1 Peg
Globular cluster M 15
Galaxy NGC 7331
Meteor Shower: Alpha Pegasids, Upsilon Pegasids ...
 See also: Constellation, Constellations, Pegasus, Scheat, Epsilon
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