Apparent magnitude (V) 4.15
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1 Lacertae (1 Lac) is a solitary star in the northern constellation of Lacerta. It is visible to the naked eye with an apparent magnitude of 4.15. Based upon measurements by the Hipparcos spacecraft, this star is located at a distance of roughly 420 light years. A stellar classification of K3II-III suggests this is an evolved giant star. It has expanded to an estimated 51 times the radius of the Sun. The effective temperature of 4,350 K for the stellar atmosphere gives it the orange-hued glow of a K-type star.