X-Nico

2 unusual facts about parhelic circle


Parhelic circle

Even fractions of parhelic circles are less common than sun dogs and 22° halos.

While parhelic circles are generally white in colour because they are produced by reflection, they can however show a bluish or greenish tone near the 120° parhelia and be reddish or deep violet along the fringes.


Liljequist parhelion

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).


see also

Liljequist

Liljequist parhelion, a rare halo, an optical phenomenon appearing on the parhelic circle approximately ±150-160° from the sun