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3 Cassiopeiae (3 Cas) is a hypothetical star in the Cassiopeia constellation catalogued by English astronomer John Flamsteed. [1]

6 relations: Cassiopeia (constellation), Cassiopeia A, Hypothetical astronomical object, John Flamsteed, Nature (journal), Star.

Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.

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Cassiopeia A (Cas A) is a supernova remnant (SNR) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies above 1 GHz.

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A hypothetical astronomical object is an astronomical object (such as a star, planet or moon) that is believed or speculated to exist but whose existence has not been scientifically proven.

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John Flamsteed FRS (19 August 1646 – 31 December 1719) was an English astronomer and the first Astronomer Royal.

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Nature is a British interdisciplinary scientific journal, first published on 4 November 1869.

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A star is a luminous sphere of plasma held together by its own gravity.

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[1] https://en.wikipedia.org/wiki/3_Cassiopeiae

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