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Nature volume 13, pages 348349 | Download Citation



OLBERS' COMET OF 1815.—The comet discovered by Olbers, at Bremen, on March 6, 1815, and with which his name has been usually associated, belongs to the group, the members of which revolve in periods a few years less than the period of the planet Uranus. The deviation from parabolic motion was remarked independently a few months after the discovery by Bessel, Gauss, Olbers, Nicolai, and Triesnecker. Bessel calculated elliptic elements so early as the middle of May, and was followed by Gauss in June, and the former subsequently investigated, as completely as was practicable at the time, the elements resulting from the whole course of observation and the effect of perturbation in the actual revolution.

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