Chi Pegasi, Latinised from χ Pegasi, is a single[ star in the northern constellation of Pegasus, along the eastern constellation border with Pisces. It has a reddish hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.80.][ The distance to this star is approximately 368 based on stellar parallax,][ but it is drifting closer with a radial velocity of −46 km/s.][
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This is an aging red giant star on the asymptotic giant branch[ with a stellar classification of M2+III.][ It is about 8 billion years old with a mass 6% greater than solar mass. With the supply of hydrogen at its stellar core exhausted, the star has cooled and expanded to 53 times the solar radius. It is radiating around 435 times the luminosity of the Sun from its swollen photosphere at an effective temperature of .][
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Chi Pegasi is a suspected small-amplitude variable star.[ Koen and Eyer examined the Hipparcos data for Chi Pegasi, and found that its brightness varied by 0.0094 magnitudes, with a period of 5.9641 days.]
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