parhelion
noun
a bright circular spot on a solar halo; a mock sun: usually one of two or more such spots seen on opposite sides of the sun, and often accompanied by additional luminous arcs and bands.
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The emerging rays are parallel to their original direction and form a colourless image on the parhelic circle opposite the sun.
From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 8 "Haller, Albrecht" to "Harmonium" by Various