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abstraction > data collection > astronomical catalog > catalog about star systems > galaxy catalog > Shane-Wirtanen catalog |
Shane-Wirtanen catalog | ||||
subject | fact |
Shane-Wirtanen catalog | has definition A catalog of all galaxies brighter than seventeenth magnitude (a measure of brightness). There are about a million galaxies in the Shane-Wirtanen catalogue. | |
is a kind of galaxy catalog | ||
galaxy catalog | has object type galaxy or nebula (some nebulae are misidentified as galaxies) |