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abstraction > mathematical concept > number > quantity > equatorial sky area > constellation > constellation named by Bayer > Hydrus

Hydrus (Sea Serpent, Hyi)
subject			fact

Hydrus	is a part of celestial sphere
	has historical image
	has genitive Hydri
	has synonym Sea Serpent
	has historical origin Julius Schiller combined Hydrus and Tucana to form the Biblical figure Archangel Raphael
	has acronym Hyi
	is an instance of constellation named by Bayer
constellation named by Bayer	is named by Johann Bayer
constellation	has boundary defined in equatorial coordinates
	is a part of celestial sphere
	has component asterism
	has purpose to divide the celestial sphere into small visually recognizable star classification regions
equatorial sky area	is defined using equatorial coordinates
quantity	has unit
number	has value