Liljequist parhelion, a rare halo, an optical phenomenon appearing on the parhelic circle approximately ±150-160° from the sun
A Liljequist parhelion is a rare halo, an optical phenomenon appearing on the parhelic circle approximately 150–160° from the sun between a 120° parhelion and the anthelion (opposite to the sun at the antisolar point).
120° parhelion | Robert Liljequist | Liljequist parhelion | Liljequist Heights | Gösta Hjalmar Liljequist |