Abstract
EPHEMERIS FOR HALLEY'OMET, 1909c.—A corrected ephemeris for Halley's comet is published by Mr. Crommelin in No. 4359 of the Astronomische Nachrichten (p. 249, September 28). This ephemeris, like that published in No. 4330 of the same journal, is based on the elements published, for the Astronomische Gesellschaft prize, under the pseudonym “Isti mirantur stellum,” Messrs. Cowell and Crommelin, it transpires, being the calculators. The new observations do not yet cover a sufficiently long arc to permit of an independent deter-mination of the orbit, but they do show that the previously published elements are correct except that the date of perihelion passage must be advanced 3-4 days, thereby making it 1910 April 20-0 (G.M.T.); this modification has been taken into account in preparing the present ephemeris, which covers the period August 28 to December 26 in five-day steps. An extract follows:—
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Our Astronomical Column . Nature 81, 465 (1909). https://doi.org/10.1038/081465a0
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DOI: https://doi.org/10.1038/081465a0