Abstract
IT is well-known that Procyon, like Sirius, does not travel through space in a straight line, its motion undergoing changes similar to those which would result from the disturbing action of a large satellite. This explanation was advanced by Bessel in 1844, and though the satellite has not yet been seen, its existence has been placed beyond reasonable doubt by Dr. Auwers's investigations on the subject.
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BARR, J. The Satellite of Procyon. Nature 39, 510 (1889). https://doi.org/10.1038/039510a0
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DOI: https://doi.org/10.1038/039510a0
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