This dimension names the astronomical catalogue in which a celestial object is formally listed. Wikipedia defines such a catalogue as "a list or tabulation of astronomical objects, typically grouped together because they share a common type, morphology, origin, means of detection, or method of discovery." Browsing this way collects every object recorded in the same catalogue.
Facts
Comparison
Field Origin Era Messier Catalogue
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Sources
1. Wikipedia: Binary star
Wikimedia FoundationBinary star, Discovery section, 1803 Herschel sentenceQuote, Binary star, Discovery section, 1803 Herschel sentence
By 1803, he had observed changes in the relative positions in a number of double stars over the course of 25 years, and concluded that, instead of showing parallax changes, they seemed to be orbiting each other in binary systems.
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