In astrology, the ecliptic is divided into twelve equal segments of 30 degrees. These are the twelve signs of the zodiac. Although the signs of the zodiac were named after the star constellations found along the ecliptic, they are not identical to them.
Because the Earth is tilted, the ecliptic currently forms an angle of 23 degrees, 26 minutes to the celestial sphere. This is called the axial tilt or obliquity.
- The intersections of the ecliptic and the equator on the celestial sphere are the vernal and autumnal equinoxes (red), where the Sun seems to cross the celestial equator.