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The month of September marks many changes. For skywatchers it means the passing of the season's trademark Summer Triangle of stars and the arrival of the autumn constellations.
Flying high in the autumn sky is the mythical winged horse Pegasus.
Although one of the largest constellations in area, it boasts no bright stars. Its most noticeable star pattern is the Great Square of Pegasus: four second magnitude stars marking the body of the horse. Ironically, the brightest of those stars, Alpheratz, isn't even an official member of the Pegasus constellation, being part of the neighboring constellation Andromeda.
This sky map shows some of September constellations visible in the night sky, along with the planets Jupiter and Uranus.
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