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abstraction > mathematical concept > number > quantity > equatorial sky area > Zodiac

Zodiac (ecliptic region)
subject			fact

Zodiac	is a part of celestial sphere
	has synonym ecliptic region
	has historical origin Contains twelve constellations which represent a calendar of the Sun's apparent progress across the celestial sphere. Naked eye planets are found along much the same path (the ecliptic) and caused these constellations to become a focus for astrology.
	has purpose to facilitate planetary observations as most objects in solar orbit are found in this region
	has definition A band about 8° wide on the celestial sphere, centered on the ecliptic.
	is an instance of equatorial sky area
equatorial sky area	is defined using equatorial coordinates
quantity	has unit
number	has value