thumb|right|Highly oblique view of Helicon (left) and [[Le Verrier (lunar crater)|Le Verrier (right). The mountain on the horizon at left is Promontorium Laplace, about 180 km beyond Helicon. Note that Helicon's ejecta is buried by the mare lava, but Le Verrier's is not. From Apollo 15.]]

thumb|right|Another oblique view of Helicon (left), at a higher sun angle. Also from Apollo 15.

Helicon is a small lunar impact crater that is located on the north part of the Mare Imbrium. The crater was named after 4th century BC Greek astronomer Helicon of Cyzicus, To the northwest is the prominent Sinus Iridum, a mountain-ringed bay on the mare. Just to the east is the slightly smaller crater Le Verrier.

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Sources

  • , excellent earth-based image of Sinus Iridum and vicinity, including Helicon and Le Verrier