46度暈是一種很罕見的出現在太陽附近的暈。當太陽與水平線的夾角呈15-27°時，46度暈很容易與上側弧與外側弧混淆。[1]
46度暈與22度暈相似，但更寬更淡。成因是陽光穿過六角形冰晶時，[2] 晶體之間90°的夾角使得其色彩分佈比22度暈更為分散。[3]
參考文獻
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