Helicon (crater)

Helicon is a small lunar impact crater that is located on the north part of the Mare Imbrium. To the northwest is the prominent Sinus Iridum formation, a mountain-ringed bay on the mare. Just to the east is the slightly smaller Le Verrier crater. Helicon is a nearly circular crater formation with inner walls that curve down to a relatively flat floor. There is a tiny craterlet located at the mid-point of the interior, and a small craterlet along the southwestern rim.

Either named for Helicon or according to NASA for another Greek Astrronomer called Helicon

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Helicon crater.