The ecliptic is the apparent path that the Sun follows through the sky over the course of the year, relative to the stars, as seen from the vantage point of the Earth. It is traced on the imaginary celestial sphere, where that is intersected by the plane of the ecliptic, the geometric plane in which the Earth orbits the Sun. The name refers to the fact that eclipses occur when the full or new Moon meets the Sun on this path. Note that it does not refer to the hour-by-hour motion of the Sun as the Earth rotates, but the day-to-day motion of the Sun when observed at the same time each day.

Contents

• 1 Equator
• 2 Stars
• 3 Sun
• 4 Planets
• 5 Moon
• 6 Star coordinates
• 7 References
• 8 External links

ecliptic

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