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Published online by Cambridge University Press: 14 August 2015
Seven apparitions of this comet, from 1925 to 1970, have been linked, with account taken of the perturbations by Venus to Neptune; 202 observations have been represented with mean square error ± 2′.15. The resulting orbit was integrated from 1947 back to 1843 and compared with Möller's results. The result of the comparison after 104 years was found to be very good. The comet's orbital evolution was studied altogether over a period of 400 yr (1660 to 2060). There were nine approaches within 1.5 AU of Jupiter, the comet on one occasion passing through Jupiter's sphere of action. The orbital evolution was free from catastrophic changes, the comet remaining in the Jupiter family throughout the interval. The problem of the comet's discovery was considered.