Which large constellation has sometimes been used in sidereal astrology as a thirteenth zodiac sign?

Ophiuchus is a large constellation that's often depicted as a man grasping a snake. Due to its position behind the sun from November 29 to December 18, it has often been recognized in sidereal astrology as a thirteenth sign.

Asked by Rachel Bortles · Last updated 5 years ago · 356 views · SOURCE