Which constellation is the thirteenth constellation located along the ecliptic that is not included in the traditional twelve signs of the zodiac?

Answer

Ophiuchus

Ophiuchus, the Serpent-Bearer, is the thirteenth constellation that the Sun passes between Scorpius and Sagittarius along the ecliptic.

Which constellation is the thirteenth constellation located along the ecliptic that is not included in the traditional twelve signs of the zodiac?
sunastronomypathCelestial sphereecliptic