Pegasus

Pegasus, The Winged Horse, is a large but faint constellation, south of Andromeda and easily found only because of the 'Great Square', made up of 4 bright stars, 3 of which are second magnitude. Scheat and Markab, which form part of the horse's wing, form the southern edge of the Great Square, and from there, the rest of the figure can be made out if the sky is dark enough. Algenib, which forms the upper left portion of the wing, is off the left side of this image frame, due to my slight camera pointing error. Scheat is a red giant star, 100 times the size of our sun and 1500 times as bright, but lies 200 light years distant. Markab is a moderately large average star nearing the end of its main sequence life, being about 3 times the size of Sol, 160 times as bright, and lying at a distance of about 130 light years. Matar is a close binary that lies about 200 light years from Earth and may also have a pair of fainter companions. Sadalbari is an M-class star about 100 light years away and Homam is a B-class star about 200 light years distant which seems to have at least one companion but a second one, which would make the star a triple system, is controversial. Enif is a supergiant star, being about 150 times the size of Sol and almost 1700 times as bright; it lies about 700 light years from Earth. And Biham, often spelled Baham, is a type A star but I do not know its distance, size, or luminosity.
Pegasus is most easily viewed from August to October.