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W. Olbers (1758-1840). The Reader's Biographical Encyclopaedia. 1922

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W. Olbers (1758-1840). The Reader's Biographical Encyclopaedia. 1922 Dictionary Biographies Literary Criticism Welcome Terms of Service ⧏ Previous Next ⧐ Contents Bibliographic Record Hugh Chisholm, et al., eds.  The Reader’s Biographical Encyclopædia.  1922.
17,000 Articles from the Encyclopædia Britannica, 11th & 12th eds. W. Olbers (1758–1840) [Heinrich Wilhelm Matthias].  German astronomer, born on the 11th of October 1758 at Arbergen, a village near Bremen, where his father was minister. He studied medicine at Göttingen, 1777–1780, attending at the same time Kaestner’s mathematical course; and in 1779, while watching by the sick-bed of a fellow-student, he devised a method of calculating cometary orbits which made an epoch in the treatment of the subject, and is still extensively used. The treatise containing this important invention was made public by Baron von Zach under the title Ueber die leichteste und bequemste Methode die Bahn eines Cometen zu berechnen (Weimar, 1797). A table of eighty-seven calculated orbits was appended, enlarged by Encke in the second edition (1847) to 178, and by Galle in the third (1864) to 242. Olbers settled as a physician in Bremen towards the end of 1781, and practised actively for above forty years, finally retiring on the 1st of January 1823. The greater part of each night (he never slept more than four hours) was meantime devoted to astronomy, the upper portion of his house being fitted up as an observatory. He paid special attention to comets, and that of 1815 (period seventy-four years) bears his name in commemoration of its detection by him. He also took a leading part in the discovery of the minor planets, re-identified Ceres on the 1st of January 1802, and detected Pallas on the 28th of March following. His bold hypothesis of their origin by the disruption of a primitive large planet (Monatliche Correspondenz, vi. 88), although now discarded, received countenance from the finding of Juno by Harding, and of Vesta by himself, in the precise regions of Cetus and Virgo where the nodes of such supposed planetary fragments should be situated. Olbers was deputed by his fellow-citizens to assist at the baptism of the king of Rome on the 9th of June 1811, and he was a member of the corps législatif in Paris 1812–1813. He died on the 2nd of March 1840, at the age of eighty-one. He was twice married, and one son survived him.

1   See Biographische Skizzen verstorbener Bremischer Aerzte, by Dr. G. Barkhausen (Bremen, 1844); Allgemeine geographische Ephemeriden, iv. 283 (1799); Abstracts Phil. Trans. iv. 268 (1843); Astronomische Nachrichten, xxii. 265 (Bessel), also appended to A. Erman’s Briefwechsel zwischen Olbers und Bessel (2 vols., Leipzig, 1852); Allgemeine Deutsche Biographie (S. Günther); R. Grant, Hist. of Phys. Astr. p. 239; R. Wolf, Geschichte der Astronomie, p. 517. The first two volumes of Dr. C. Schilling’s exhaustive work, Wilhelm Olbers, sein Leben und seine Werke, appeared at Berlin in 1894 and 1900, a third and later volume including his personal correspondence and biography. A list of Olbers’s contributions to scientific periodicals is given at p. xxxv. of the 3rd ed. of his Leichteste Methode, and his unique collection of works relating to comets now forms part of the Pulkowa library.

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