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abstraction > data collection > astronomical catalog > catalog about star systems > galaxy catalog > Shane-Wirtanen catalog

Shane-Wirtanen catalog comparison table

Subject	is a kind of	has definition
galaxy catalog	catalog about star systems
Shane-Wirtanen catalog	galaxy catalog	A catalog of all galaxies brighter than seventeenth magnitude (a measure of brightness). There are about a million galaxies in the Shane-Wirtanen catalogue.

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