Magnitude 4.2 Apparent magnitude (V) 4.2 Age 5.0±0.5 Gyr | Declination +12° 10′ 22.3854″ | |
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Xi Pegasi (ξ Peg, ξ Pegasi) is the Bayer designation for a double star in the northern constellation of Pegasus, the winged horse. Located in the horse's neck, the primary component is an F-type main sequence star that is visible to the naked eye with an apparent visual magnitude of 4.2. It is 86% larger and 17% more massive that the Sun, radiating 4.5 times the solar luminosity. Based upon parallax measurements taken with the Hipparcos spacecraft, it is located 53.2 ± 0.2 light years from the Sun.
The primary has been examined for the presence of an infrared excess that might indicate the presence of a debris disk, but none has been discovered. The common proper motion companion, NLTT 54820, is a twelfth magnitude red dwarf located at an angular separation of 11.4″ along a position angle of 96.9°. This corresponds to a projected physical separation of 192.3 AU.