- Franz Xaver von Zach
caption = Franz Xaver, Baron Von Zach
June 4, 1754
birth_place = Pest
September 2, 1832
Baron Franz Xaver von Zach ("Franz Xaver
Freiherrvon Zach") ( June 4, 1754– September 2, 1832) was a Hungarian astronomer born at Pest.
He served for some time in the
Austrian army, and afterwards lived in Londonfrom 1783 to 1786 as tutor in the house of the Saxon minister, Count Brühl. In 1786 he was appointed by Ernest II, Duke of Saxe-Gotha-Altenburgdirector of the new observatory on the Seebergat Gotha, which was finished in 1791. At the close of the 18th century, he organised a group of twenty-four astronomers to prepare for a systematic search for the "missing planet" predicted by the Titius-Bode lawbetween Marsand Jupiter. Ironically, Ceres was discovered by accident just as the search was getting underway. From 1806 Zach accompanied the duke's widow on her travels in the south of Europe. He died in Parisin 1832.
Zach published "Tables of the Sun" (Gotha, 1792; new and improved edition, "ibid.", 1804), and numerous papers on geographical subjects, particularly on the geographical positions of many towns and places, which he determined on his travels with a
His principal importance was, however, as editor of three scientific journals of great value: "Allgemeine Geographische Ephemeriden" (4 vols., Gotha, 1798-1799), "Monatliche Correspondenz zur Beförderung der Erd- und Himmels-Kunde" (28 vols., Gotha, 1800-1813, from 1807 edited by
B. von Lindenau), and " _fr. Correspondance astronomique, geographique, hydrographique, et statistique" (Genoa, 1818-1826, 14 vols., and one number of the 15th, the suppression of which was instigated by the Jesuits).
999 Zachiaand Zach crater on the moonare named after him, while asteroid 64 Angelinais named after an astronomical station he set up near Marseille.
* "Brosche, P.: Der Astronom der Herzogin, Acta Historica Astronomiae Vol. 12, Verlag Harri Deutsch, Frankfurt am Main 2001" ISBN 978-3-8171-1656-0
* "Cunningham, C. (2004): The Collected Correspondence of Baron Franz von Zach, Vol. 1: Letters with Sniadecki" ISBN 0-9708162-4-3
* Cunningham, C. (2006): The Collected Correspondence of Baron Franz von Zach, Vol. 2: Letters with Schedius" ISBN 0-9708162-7-8
* Vargha, M., 2005: Franz Xaver von Zach (1754-1832). His Life and Times. Konkoly Obs. Monographs No. 5, Budapest.
title= [Astronomer, world citizen, bladder calculus patient. Franz Xaver von Zach's letters to Rudolf Abraham von Schiferli 1821-1832]
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