Subparhelic circle
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Wikipedia
The subparhelic circle is a rare halo, an optical phenomenon located below the horizon. It passes through both the subsun, below the sun, and the antisolar point, opposite to the sun. The subparhelic circle is the subhorizon counterpart to the parhelic circle located above the horizon.
Located on the subparhelic circle are several relatively rare optical phenomena: The subsun, the subparhelia, the (still undocumented) 120° subparhelia, Liljequist subparhelia, the diffuse arcs, and the Parry antisolar arcs.
On the accompanying photo centred on the antisolar point, the subparhelic circle is viewable as a gently curved horizontal line intercepted by anthelic arcs.
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Last updated on Friday October 19, 2007 at 12:37:03 PDT (GMT -0700)
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This article is licensed under the GNU Free Documentation License.
Last updated on Friday October 19, 2007 at 12:37:03 PDT (GMT -0700)
View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation
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