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Updated: April 30, 2025
The orbital motion of a cloud or stream of small particles was indicated. The period favoured by H. A. Newton was 354-1/2 days; another suggestion was 375-1/2 days, and another 33-1/4 years. He noticed that the advance of the date of the shower between 902 and 1833, at the rate of one day in seventy years, meant a progression of the node of the orbit.
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