Some of you MIGHT be an Ophiuchus. NOT A SAG!

Ophiuchus in the Planetary Zodiac: As Ophiuchus is a Sun-sign it is also a member of the Planetary Zodiac and the Lunar Zodiac, i.e. as well as the Sun, the planets and the Moon can frequently be seen against the stars of Ophiuchus, from the view point of the Earth.
The planet Pluto could be found in Ophiuchus until the end of 2003, after which it passed into Serpens Cauda, the Serpent's Tail. The Centaur object, the minor planetoid Chiron, was visible against the stars of Ophiuchus until November 2001, after which it passed over the border into Sagittarius. Venus and Mercury can be found in Ophiuchus for a time each year. Shown right is an example of a star chart for Pluto in Ophiuchus in June 1999.
So why isn't Ophiucus in the Commonly-Used Western Zodiac? Ophiuchus is an Ancient Greek constellation. The Serpent Bearer is one of the original Ptolemy constellations, appearing in Al Magest Star Catalogue [c 130 - 170 AD]. He also appears on the Farnese Globe, a Roman copy of a circa 2nd century BC depiction of Atlas holding the Celestial Sphere above his head. So why isn't Ophiuchus a member of the standard astrological zodiac - the Tropical Zodiac?
Good question! Ophiuchus is a Sun-sign. The Moon and planets all are seen against the stars of Ophiuchus. Unfortunately, the answer to the question is that Ophiuchus isn't in the Tropical Zodiac not because there is something wrong with Ophiuchus but because there is something wrong with the Tropical Zodiac. The Tropical Zodiac is an inaccurate oversimplification of the heavens dating from a time when we did not have telescopes or computers. Follow the Zodiac Wheels link for a description of the history of the Zodiacs.